WEBVTT - The Bone Collectors, Part 1

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<v Speaker 1>Welcome to Stuff to Blow Your Mind production of iHeartRadio.

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<v Speaker 2>Hey you welcome to Stuff to Blow your Mind. My

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<v Speaker 2>name is Robert.

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<v Speaker 3>Lamb, and I'm Joe McCormick.

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<v Speaker 2>And as we continue our Halloween seasonal offerings, we have

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<v Speaker 2>to ask ourselves a question, is there anything more suitably

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<v Speaker 2>creepy than a vast collection of bones? I have a

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<v Speaker 2>feeling that a number of you, like us, have found yourself,

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<v Speaker 2>especially this month, this month, more than like any past Halloween,

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<v Speaker 2>have found yourself wandering through your neighborhood and neighborhood yards

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<v Speaker 2>are just littered with plastic bones. Like every year, the

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<v Speaker 2>skeleton decorations just get more and more intense, more gigantic.

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<v Speaker 2>Some of these yards are just littered with plastic bones.

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<v Speaker 3>I can't remember if I've already mentioned it this year,

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<v Speaker 3>but my daughter, who is very Halloween brained at this moment,

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<v Speaker 3>is also especially skeleton brained, which she calls selkins selkin brain.

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<v Speaker 3>So we have to go around the neighborhood to buy

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<v Speaker 3>a request to see particular skeletons in particular yards. There

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<v Speaker 3>are some that are better than others. There are scary selkins,

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<v Speaker 3>there are cute selkans. There are beautiful selkins. There's a

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<v Speaker 3>whole taxonomy, and I don't know exactly what the criteria are,

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<v Speaker 3>but she does. And it's clear that while a subset

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<v Speaker 3>are considered scary, some are not scary at all. Some

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<v Speaker 3>some are just beautiful things to admire. There. You know,

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<v Speaker 3>it's like people are putting Christmas lights up.

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<v Speaker 2>Yeah, I mean, it is fascinating how the symbol of

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<v Speaker 2>the skull, of the skeleton of bones, or the skull

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<v Speaker 2>and bones. You know, at a very basic level, it

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<v Speaker 2>always means death, but there are so many different tweaks

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<v Speaker 2>on that, and so culturally pop culturally, skulls and bones

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<v Speaker 2>can be very empowering. They can be very life affirming,

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<v Speaker 2>They can be fun, they can be hilarious, even if

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<v Speaker 2>there is like a very like basic message about mortality

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<v Speaker 2>at the bottom of everything.

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<v Speaker 3>Have we ever talked before about the what I take

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<v Speaker 3>to be implied humor in all of these anatomically incorrect

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<v Speaker 3>skeletons that proliferate different kinds of animal, skeletons of animals

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<v Speaker 3>that don't actually have internal skeletons, like you know, an

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<v Speaker 3>octopus skeleton or a.

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<v Speaker 2>Skeleton the most ridiculous. But I've also seen some like

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<v Speaker 2>there's one of an owl where the owl has its ears,

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<v Speaker 2>so you need to tell by its profile that it's

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<v Speaker 2>an owl skeleton.

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<v Speaker 3>There are dogs around our neighborhood that have cute, like

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<v Speaker 3>fluffy dog ears in bone dog skeletons with the ears

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<v Speaker 3>are phone ears, and I think that's because, Yeah, you

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<v Speaker 3>wouldn't know it was a dog necessarily if it didn't

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<v Speaker 3>have the ears.

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<v Speaker 2>Yeah, cat looks solid, though. We have a fake cat

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<v Speaker 2>skeleton on our porch and I'm not sure it's one

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<v Speaker 2>hundred percent anatomically correct, but I don't think it has

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<v Speaker 2>any fake ears, but maybe it does. I'm going to

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<v Speaker 2>check after a record and see if I've been duped.

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<v Speaker 3>The fact that we have to put these non bone

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<v Speaker 3>things onto skeletons to make them recognizable as the animals

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<v Speaker 3>we know in life gives you real perspective on paleo

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<v Speaker 3>art and reconstructions of dinosaurs and stuff like. You know,

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<v Speaker 3>you have to realize how much soft tissue there is,

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<v Speaker 3>and that there is some guesswork involved in reconstructing the

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<v Speaker 3>body of an extinct animal when all you've got is

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<v Speaker 3>an imprint or fossil of the hard parts. I mean,

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<v Speaker 3>in some cases we actually do know, because you know,

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<v Speaker 3>there are clues that you can get through fossil evidence

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<v Speaker 3>of what the soft tissue parts may have been, but

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<v Speaker 3>not in every case.

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<v Speaker 2>Yeah, later on in this episode, we'll be talking a creature,

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<v Speaker 2>a prehistoric creature. And I was looking around to see

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<v Speaker 2>if there was a nice bit of paleo art to

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<v Speaker 2>throw into our outline, just for you and me to

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<v Speaker 2>look at. And you know, I just wasn't. I wasn't

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<v Speaker 2>taken by any out so I just included a picture

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<v Speaker 2>of the skull. And it's like, the skull is the

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<v Speaker 2>hard data in this case. Anyway, the skull, I think

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<v Speaker 2>really illustrates a lot of what we'll be discussing regarding

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<v Speaker 2>the creature.

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<v Speaker 3>But clearly skulls and bones are a big part of

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<v Speaker 3>the imagery of modern horror. In fact, we're going to

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<v Speaker 3>be talking about a weird house cinema movie this week

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<v Speaker 3>that has a great bone body reveal. It's got a

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<v Speaker 3>lady with a fleshy head and at one point they

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<v Speaker 3>pull the cloak back and you see her her body

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<v Speaker 3>is just bones, yes, or it's not just bones. I

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<v Speaker 3>don't know. It's bones and some gungk.

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<v Speaker 2>But mostly bones.

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<v Speaker 3>Yes, bones, bones are revealed at least Yeah.

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<v Speaker 2>Yeah, there are so many great examples from especially from

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<v Speaker 2>horror cinema and horror media that I think we can

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<v Speaker 2>turn to where bones is especially big. Heaps of bones.

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<v Speaker 2>Collections of bones are very very important, and they can

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<v Speaker 2>read in different ways. So I thought we might run

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<v Speaker 2>through just a few examples before we get into the

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<v Speaker 2>meat of our episode here. But you know, speaking of meat,

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<v Speaker 2>I think one of the great ones is, of course,

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<v Speaker 2>nineteen seventy four is the Texas chainsaw Massacre, where we

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<v Speaker 2>have our characters, you know, slowly approaching the saw your

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<v Speaker 2>home and as they begin to you know, creep every

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<v Speaker 2>closer to the house in that ominous generator that's that's running,

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<v Speaker 2>we begin to see like little bone trinkets hanging from limbs,

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<v Speaker 2>and then when we get into the house itself, there's

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<v Speaker 2>also like more things made out of bones.

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<v Speaker 3>Yeah, the saw your household is not wasteful. They don't

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<v Speaker 3>like to throw things out, you know, they make use

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<v Speaker 3>of what they got.

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<v Speaker 2>Yeah. Yeah. In other cases, we you know, we have

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<v Speaker 2>plenty of examples of essentially a monster's layer where there

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<v Speaker 2>are a lot of bones. One great example that I've

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<v Speaker 2>always I've always liked back from my days when I

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<v Speaker 2>think read the story for the first time in junior.

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<v Speaker 2>High would be the nineteen seventy Stephen King short story

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<v Speaker 2>Graveyard Shift, as well as the nineteen ninety film adaptation

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<v Speaker 2>that I quite like. There's eventually you end up in

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<v Speaker 2>a vast subterranean chamber. It's just filled with human and

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<v Speaker 2>animal bones.

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<v Speaker 3>Is that the one is about like a giant rat

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<v Speaker 3>or bat.

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<v Speaker 2>Ultimately there is a giant rat or bat, and then

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<v Speaker 2>just a lot of rats.

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<v Speaker 3>Yeah, yeah, you know, it's funny. These first two examples

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<v Speaker 3>you mentioned highlight what I would say are the main

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<v Speaker 3>two genres of bone collections in horror. One, exemplified by

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<v Speaker 3>the Texas Chainsaw massacre, is the intentionally curated bone collection,

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<v Speaker 3>often where artifacts have been fashioned out of bone, or

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<v Speaker 3>where bones are placed in a particular arrangement. And then

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<v Speaker 3>the other is the midden or the pile of bones,

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<v Speaker 3>where bones are just accumulating haphazardly, And they both suggest horror,

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<v Speaker 3>but in very different ways. One is a kind of

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<v Speaker 3>chaotic biological horror that just suggests a kind of like

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<v Speaker 3>some animal is just like eating the flesh and stripping

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<v Speaker 3>the bones and here's where the bones end up, whereas

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<v Speaker 3>the former suggests a creepy fascination that suggests aberrant behavior

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<v Speaker 3>and obsession.

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<v Speaker 2>Yeah, I think this is a good distinction to make. Yeah,

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<v Speaker 2>there's certainly if there's a collection of bones somewhere and

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<v Speaker 2>there's some sort of intelligence behind it, it's not necessarily

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<v Speaker 2>an intelligence we want to interact with. You know, it

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<v Speaker 2>falls under the heading of like trophy taking, and you know,

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<v Speaker 2>we're not really going to go in that direction probably

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<v Speaker 2>with these episodes. But I think there are plenty of

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<v Speaker 2>examples of that to point too in human history. But

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<v Speaker 2>then the other example being like whoa, here's a place

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<v Speaker 2>where there are a bunch of bones. A bunch of

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<v Speaker 2>bones means a lot of death. Maybe a lot of

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<v Speaker 2>death happened at once, maybe a lot of death has

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<v Speaker 2>taken place over time. But you know, obviously humans and

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<v Speaker 2>are myth making and our supernatural thinking, those places can

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<v Speaker 2>often be interpreted as places of bad vibes, places that

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<v Speaker 2>might be haunted, cursed, or you know, in some manner

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<v Speaker 2>given supernatural weight, they can also be rather holy places

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<v Speaker 2>in their own right as well. But also the idea

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<v Speaker 2>of a place where there are a lot of bones

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<v Speaker 2>that could also spell the possibility of a very real

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<v Speaker 2>life danger. What if the thing that is producing all

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<v Speaker 2>of these bones is still here some manner of predator

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<v Speaker 2>or predators that could threaten us directly. I mean, that's

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<v Speaker 2>getting into some of our basic hardwiring as an organism.

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<v Speaker 3>Yeah, that's exactly right. There are sort of ecological implications

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<v Speaker 3>whenever you see a collection of bones that kind of

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<v Speaker 3>suggests what else may be about in the area. But

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<v Speaker 3>then there's another thing, which is just the self reflective

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<v Speaker 3>version of the reaction to seeing human bones in particular,

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<v Speaker 3>which is I think of uh, the you know the

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<v Speaker 3>quote from uh, you know, the story of Wilhelm Runken

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<v Speaker 3>when he first you know, creates the X ray machine

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<v Speaker 3>and he gets an X ray of his wife's hand

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<v Speaker 3>and she she looks through on the plate and sees

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<v Speaker 3>her bones printed on the on the image. Uh, and

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<v Speaker 3>she says, I have seen my own death. You know,

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<v Speaker 3>you're not supposed to see your own bones unless and

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<v Speaker 3>you don't unless there is some kind of catastrophic imagery. Yeah.

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<v Speaker 3>I was gonna say injury, but yes, catastrophic imagery as well.

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<v Speaker 2>Yeah, yeah, yeah, I thought you were going to say

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<v Speaker 2>if we do see our own bones. They better be dancing.

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<v Speaker 2>It better be in carniform, you know. I should also

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<v Speaker 2>mention the killer rabbit from a money python in The

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<v Speaker 2>Holy Grail.

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<v Speaker 4>That's another great example.

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<v Speaker 2>Just look at the bones.

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<v Speaker 4>Look at the bone.

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<v Speaker 2>Now, we put together a whole list of additional horror

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<v Speaker 2>movies that had some sort of bone collecting going on

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<v Speaker 2>in them. We may come back to some of these

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<v Speaker 2>as we get into specific examples, because we are, of

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<v Speaker 2>course going to dip into the natural world here into

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<v Speaker 2>the real world. And I thought a great place to

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<v Speaker 2>start would be with a creature of prehistoric caves, a

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<v Speaker 2>creature that accumulated bones in such caves and would have

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<v Speaker 2>been encountered by our ancestors. And I think this is

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<v Speaker 2>particularly potent to think about because these would have This

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<v Speaker 2>would be an example of a bone littered environment that

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<v Speaker 2>our ancestors would have seen, would have thought about, would

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<v Speaker 2>have processed, and also a creature that we would have

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<v Speaker 2>had direct interaction with. I'm going to be talking about

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<v Speaker 2>the cave hyena. The cave hyena consisted of two extinct species.

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<v Speaker 2>There's crocuta crocuta spellia and crocuta crocuta old Tema, and

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<v Speaker 2>they would have ranged across Eurasia during the middle to

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<v Speaker 2>late plus to seen, an age that saw the expansion

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<v Speaker 2>of modern humans and the extinction of archaic humans, including

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<v Speaker 2>the Neanderthals. There of course relatives of the modern African

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<v Speaker 2>spotted hyena that is Crocuta crocuta, and there are also

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<v Speaker 2>three other extant hyaena species, as well as other extinct

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<v Speaker 2>species that they're related to, such as the giant short

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<v Speaker 2>faced hyena. Now, the modern spotted hyena alone is an

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<v Speaker 2>impressive organism. I think everyone has some knowledge of this creature,

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<v Speaker 2>hopefully more from documentaries than maybe going to zoos and

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<v Speaker 2>so forth, as opposed to just the lion king.

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<v Speaker 3>But I thought you were going to say just having

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<v Speaker 3>them as pets.

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<v Speaker 2>Or no, you know, please don't have them as pets.

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<v Speaker 2>But you know, this is definitely an impressive and fascinating

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<v Speaker 2>organism that we could we could easily do an an

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<v Speaker 2>entire episode on, and they're more than capable of inspiring

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<v Speaker 2>myth and legend on their own. I mean, they're large,

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<v Speaker 2>scavenging carnivores with a wide vocal range. They can make

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<v Speaker 2>very perplexing sounds, and they're also noted and have long

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<v Speaker 2>been noted for their propensity for a grave robbing, and

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<v Speaker 2>sometimes they've been known to opportunistically prey on live humans.

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<v Speaker 2>They are voracious bone eaters, and I'm to understand they

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<v Speaker 2>can digest all organic components of bone, not just the marrow.

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<v Speaker 2>So they are, you know, basically like the idea of

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<v Speaker 2>like a graveyard ghoule is very much a humanoid take

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<v Speaker 2>on a hyena.

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<v Speaker 3>But do I understand correctly with the spotted hyena, it

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<v Speaker 3>not only gnaws bones to get the meat off, It

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<v Speaker 3>actually eats the bones themselves. It crunches up the bone

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<v Speaker 3>and digests the whole thing.

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<v Speaker 2>Yeah, that's that's how it goes down. And you can

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<v Speaker 2>mentioned skulls earlier. You can look up the you know,

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<v Speaker 2>certainly the skull of a modern spotted hyena, but also

0:13:02.760 --> 0:13:06.520
<v Speaker 2>look up the skulls of any of these prehistoric hyenas

0:13:06.520 --> 0:13:08.760
<v Speaker 2>and you'll just see how robust they are. And you

0:13:08.800 --> 0:13:10.800
<v Speaker 2>can you can really take one look at this skull

0:13:10.800 --> 0:13:13.360
<v Speaker 2>and realize, oh yeah, this is a bone muncher. This

0:13:13.480 --> 0:13:16.160
<v Speaker 2>is a bone munching machine. Just look at those jobs.

0:13:16.320 --> 0:13:19.000
<v Speaker 3>This head is like the machine press that they crushed

0:13:19.000 --> 0:13:21.120
<v Speaker 3>the terminator in at the end of the first movie.

0:13:21.320 --> 0:13:26.679
<v Speaker 2>Yes, yeah, exactly. So again, they're very fascinating creatures and

0:13:26.720 --> 0:13:31.000
<v Speaker 2>they have They've inspired all sorts of different folk beliefs, legends,

0:13:31.000 --> 0:13:35.720
<v Speaker 2>and mythologies. Ancient writers discuss them quite a bit also

0:13:35.720 --> 0:13:38.760
<v Speaker 2>got a fair bit wrong about them, especially considering their

0:13:38.840 --> 0:13:43.720
<v Speaker 2>gender and sexuality. There are these various misnomers and in

0:13:43.800 --> 0:13:47.440
<v Speaker 2>ancient writings about how they would they were they were

0:13:47.720 --> 0:13:51.960
<v Speaker 2>like bisexual or hemaphroditic, or you know, various takes on

0:13:52.080 --> 0:13:56.439
<v Speaker 2>this just obviously a classic case of of the observers

0:13:56.480 --> 0:13:58.480
<v Speaker 2>not really knowing what they're observing and looking at with

0:13:58.520 --> 0:14:01.959
<v Speaker 2>a particular organ. But then there are all these other

0:14:02.000 --> 0:14:05.199
<v Speaker 2>crazy ideas as well, such as I'm just gonna read

0:14:05.200 --> 0:14:06.800
<v Speaker 2>a little bit from our old friend plenty of the

0:14:06.840 --> 0:14:10.840
<v Speaker 2>elder here. Okay, a number of other remarkable facts about

0:14:10.880 --> 0:14:14.880
<v Speaker 2>it the hyena are reported, but the most remarkable are

0:14:14.880 --> 0:14:19.520
<v Speaker 2>that among the shepherd's homesteads, it simulates human speech and

0:14:19.640 --> 0:14:22.240
<v Speaker 2>picks up the name of one of them so as

0:14:22.280 --> 0:14:24.840
<v Speaker 2>to call him to come out of doors and tear

0:14:24.920 --> 0:14:31.880
<v Speaker 2>him in pieces. What And also that it imitates a

0:14:31.920 --> 0:14:35.240
<v Speaker 2>person being sick to attract the dogs so that it

0:14:35.280 --> 0:14:39.320
<v Speaker 2>may attack them. That this animal alone, digs up graves

0:14:39.360 --> 0:14:42.520
<v Speaker 2>in search of corpses, that a female is seldom caught,

0:14:42.840 --> 0:14:47.320
<v Speaker 2>that its eyes have a thousand variations and alterations of color. Moreover,

0:14:47.400 --> 0:14:50.800
<v Speaker 2>that when its shadow falls on dogs, they are struck dumb,

0:14:51.280 --> 0:14:53.960
<v Speaker 2>and that it has certain magic arts by which it

0:14:54.080 --> 0:14:57.600
<v Speaker 2>causes every animal at which it gazes three times to

0:14:57.640 --> 0:14:59.080
<v Speaker 2>stand rooted to the spot.

0:14:59.360 --> 0:15:01.560
<v Speaker 3>The last part is that a metaphor does he say,

0:15:01.600 --> 0:15:04.040
<v Speaker 3>does he mean the animals literally grow roots?

0:15:05.160 --> 0:15:07.280
<v Speaker 2>I'm going to assume it's not going to that link.

0:15:07.360 --> 0:15:10.280
<v Speaker 2>But but the idea I guess is that they they

0:15:10.360 --> 0:15:14.080
<v Speaker 2>had they have the power to essentially hypnotize with their gaze.

0:15:13.960 --> 0:15:16.120
<v Speaker 3>Yeah, look three times in its freeze tag.

0:15:16.400 --> 0:15:18.480
<v Speaker 2>Yeah, I mean they're alarming animals.

0:15:18.640 --> 0:15:18.920
<v Speaker 4>Uh.

0:15:19.080 --> 0:15:19.480
<v Speaker 3>Sure.

0:15:20.000 --> 0:15:23.320
<v Speaker 2>And some of the footage and and images I've seen,

0:15:23.360 --> 0:15:26.680
<v Speaker 2>and certainly again they have that extended vocal range. They

0:15:26.720 --> 0:15:30.880
<v Speaker 2>create very strange sounds that we often compare to laughter.

0:15:31.400 --> 0:15:33.240
<v Speaker 2>And you know, they're not alone in this. There are

0:15:33.280 --> 0:15:37.880
<v Speaker 2>various other organisms that make sounds that remind us of

0:15:37.960 --> 0:15:43.440
<v Speaker 2>human human laughter, human conversation, and it can be very uncanny.

0:15:43.720 --> 0:15:46.560
<v Speaker 3>You can almost sense the telephone game in this reporting.

0:15:46.720 --> 0:15:50.640
<v Speaker 3>They do actually make strange sounds that could sound kind

0:15:50.640 --> 0:15:53.560
<v Speaker 3>of human in ways, but here this this gets escalated

0:15:53.600 --> 0:15:56.560
<v Speaker 3>to they say your name and call you outside.

0:15:56.960 --> 0:15:57.360
<v Speaker 4>Yeah.

0:15:57.720 --> 0:16:00.480
<v Speaker 2>Likewise, the whole bit about them being the only creatures

0:16:00.480 --> 0:16:04.160
<v Speaker 2>to rob human graves, I mean, they're various creatures that

0:16:04.200 --> 0:16:06.960
<v Speaker 2>if they can, if they can dig up a body,

0:16:07.360 --> 0:16:09.960
<v Speaker 2>they will do so and get to it, you know.

0:16:10.000 --> 0:16:13.400
<v Speaker 2>So it's not just in the hyaenas. And then also

0:16:13.640 --> 0:16:17.960
<v Speaker 2>they are known to sometimes make opportunistic attacks against humans.

0:16:18.440 --> 0:16:22.520
<v Speaker 2>They may in some cases become man eaters. But again

0:16:22.520 --> 0:16:23.480
<v Speaker 2>they're not alone in them.

0:16:23.760 --> 0:16:26.000
<v Speaker 3>But to be clear, do we think that plenty here

0:16:26.080 --> 0:16:28.840
<v Speaker 3>is talking about like the African spotted hyaena or is

0:16:28.880 --> 0:16:31.920
<v Speaker 3>he talking about an extinct variety of Hyaena.

0:16:32.520 --> 0:16:36.040
<v Speaker 2>I believe he's talking about you know, sub Saharan African

0:16:36.200 --> 0:16:39.560
<v Speaker 2>spotted hyaenas here. Okay, thus sort of the game of

0:16:39.560 --> 0:16:42.880
<v Speaker 2>telephone in places here. Yeah, but yeah, suffice to say,

0:16:42.880 --> 0:16:46.040
<v Speaker 2>it's a species that certainly invites mystery, and they occupy

0:16:46.080 --> 0:16:48.480
<v Speaker 2>a number of roles in the traditional beliefs of people

0:16:48.560 --> 0:16:52.360
<v Speaker 2>who have long lived beside them. You know, some fearsome,

0:16:52.360 --> 0:16:54.560
<v Speaker 2>but also there are plenty of examples that are either

0:16:54.560 --> 0:16:59.440
<v Speaker 2>ambivalent or even protective in their attitude regarding human beings,

0:17:00.120 --> 0:17:03.320
<v Speaker 2>so they're not just batties. So there's more than just

0:17:03.360 --> 0:17:07.560
<v Speaker 2>the lion king in play when we consider myth making

0:17:07.560 --> 0:17:10.600
<v Speaker 2>in legends with hyaenas. Sure, now I want to come

0:17:10.600 --> 0:17:14.119
<v Speaker 2>back though, to, of course, cave hyenas, because modern hyaenas

0:17:14.240 --> 0:17:18.240
<v Speaker 2>are broadly considered habitat generalists. You know, they may reside

0:17:18.280 --> 0:17:21.880
<v Speaker 2>in they may reside in dens that they've dug out

0:17:21.920 --> 0:17:24.800
<v Speaker 2>of the earth. They may reside in caves, they may

0:17:25.280 --> 0:17:29.680
<v Speaker 2>lay around on rocky outcrops and various other locations. They're

0:17:29.720 --> 0:17:33.680
<v Speaker 2>generally quite flexible. Wherever they make their den, they may

0:17:33.720 --> 0:17:37.400
<v Speaker 2>bring carcasses and bones back for further consumption and therefore

0:17:37.480 --> 0:17:40.600
<v Speaker 2>litter them in that environment. And then we have the

0:17:40.640 --> 0:17:46.239
<v Speaker 2>cave hyenas. And the name might easily summon the idea that, okay, well,

0:17:46.240 --> 0:17:51.800
<v Speaker 2>these are hyenas that exclusively lived in caves, and therefore

0:17:51.840 --> 0:17:56.120
<v Speaker 2>there's some sort of a cave specialist. But this too

0:17:56.160 --> 0:18:00.560
<v Speaker 2>would be incorrect. So cave hyenas, despite their name, they

0:18:00.600 --> 0:18:04.080
<v Speaker 2>could also make dens in various other places, and did,

0:18:04.600 --> 0:18:08.560
<v Speaker 2>but their use of cave dens is particularly pronounced. And

0:18:08.640 --> 0:18:14.919
<v Speaker 2>these environments have served as time capsules, preserving the littered remains,

0:18:15.400 --> 0:18:18.040
<v Speaker 2>the bones left over from their habitation there.

0:18:18.240 --> 0:18:21.080
<v Speaker 3>That makes sense. So because the caves protect what the

0:18:21.160 --> 0:18:25.440
<v Speaker 3>hyaenas did inside there to some extent, that evidence is preserved,

0:18:25.440 --> 0:18:27.480
<v Speaker 3>and so we have an idea of what cave hyenas

0:18:27.480 --> 0:18:29.320
<v Speaker 3>were doing when they were in caves.

0:18:29.800 --> 0:18:31.720
<v Speaker 2>Yeah, and a lot of what we've learned about cave

0:18:31.760 --> 0:18:34.040
<v Speaker 2>hyenas has come from these environments, and we've learned a

0:18:34.040 --> 0:18:36.480
<v Speaker 2>lot about the animals that they preyed on from these environments.

0:18:36.880 --> 0:18:39.119
<v Speaker 2>But the cave hyenas themselves, they would have been They

0:18:39.160 --> 0:18:43.960
<v Speaker 2>were larger, heavier creatures compared to modern spotted hyaenas, and

0:18:44.040 --> 0:18:48.240
<v Speaker 2>they were considered apex predators in their own right alongside

0:18:48.280 --> 0:18:51.680
<v Speaker 2>the likes of the cave lion. They were probably less

0:18:51.720 --> 0:18:54.840
<v Speaker 2>skilled at running after prey or running away with meat

0:18:54.840 --> 0:18:58.719
<v Speaker 2>and bone compared to modern day spotted hyaenas, but they

0:18:58.720 --> 0:19:03.200
<v Speaker 2>would have been really good at dragging away much larger carcasses.

0:19:03.800 --> 0:19:05.720
<v Speaker 2>So you know, they were essentially you can think of

0:19:05.720 --> 0:19:10.920
<v Speaker 2>them as beefier and therefore better able to drag away

0:19:11.000 --> 0:19:13.560
<v Speaker 2>big bodies, big pieces of meat. And this was a

0:19:13.600 --> 0:19:19.600
<v Speaker 2>time when multiple large mammal species thrived and provided carcasses

0:19:19.680 --> 0:19:21.680
<v Speaker 2>on a regular basis to sustain them.

0:19:21.800 --> 0:19:24.040
<v Speaker 3>So can you think of them as the tractor model

0:19:24.160 --> 0:19:25.240
<v Speaker 3>rather than the sports car.

0:19:25.840 --> 0:19:27.960
<v Speaker 2>Yeah, yeah, I think that would be fair. Like there

0:19:27.960 --> 0:19:30.560
<v Speaker 2>were a lot of big bodies that would occasionally drop

0:19:30.600 --> 0:19:34.240
<v Speaker 2>to the ground, maybe with a little help, certainly with

0:19:34.280 --> 0:19:37.120
<v Speaker 2>a little help either from cave hyenas or various other

0:19:37.480 --> 0:19:40.639
<v Speaker 2>carnivore creatures. And then these guys would have been just

0:19:40.720 --> 0:19:45.160
<v Speaker 2>really good at dragging the meat, dragging the bodies back

0:19:45.200 --> 0:19:49.359
<v Speaker 2>to the caves where they could take their time breaking

0:19:49.400 --> 0:19:52.239
<v Speaker 2>down the bodies. And then also I'm to understand there

0:19:52.240 --> 0:19:55.560
<v Speaker 2>would be a certain amount of a preservation in there

0:19:55.600 --> 0:19:58.639
<v Speaker 2>as well, so sort of a cold storage environment, you know,

0:19:59.640 --> 0:20:01.800
<v Speaker 2>I don't think that was the main point, but there

0:20:01.840 --> 0:20:03.280
<v Speaker 2>would be some of that in play as well.

0:20:03.480 --> 0:20:05.840
<v Speaker 3>Yeah, low gear, torque, not speed.

0:20:06.119 --> 0:20:10.879
<v Speaker 2>Yeah, And so they'd occupy specific cave mouths on and off,

0:20:11.000 --> 0:20:15.920
<v Speaker 2>and that's key for thousands of years, seemingly displaced by

0:20:16.200 --> 0:20:21.080
<v Speaker 2>and displacing other occupiers, including Neanderthals at times, and also

0:20:21.160 --> 0:20:25.639
<v Speaker 2>perhaps cohabitating certain caves with other creatures, either kind of

0:20:25.680 --> 0:20:29.159
<v Speaker 2>at the same time or in phases, and in the

0:20:29.200 --> 0:20:33.720
<v Speaker 2>process accumulating just great quantities of animal bones that would

0:20:33.760 --> 0:20:37.119
<v Speaker 2>just build up over time. Nobody's dragging those carcasses or

0:20:37.160 --> 0:20:40.640
<v Speaker 2>those bones back out. They're just building up and providing

0:20:40.680 --> 0:20:44.720
<v Speaker 2>this ultimately wealth of data for paleontologists to come in

0:20:44.800 --> 0:20:47.200
<v Speaker 2>the distant future from their time.

0:20:47.359 --> 0:20:49.959
<v Speaker 3>So I assume you have examples of caves like this

0:20:50.000 --> 0:20:51.560
<v Speaker 3>where their middens have been found.

0:20:51.880 --> 0:20:55.560
<v Speaker 2>Yeah, yeah, there was. In twenty twenty three, it was

0:20:55.600 --> 0:20:59.080
<v Speaker 2>reported that the Siberian there's a cave near the Siberian

0:20:59.160 --> 0:21:02.760
<v Speaker 2>city of Cacassia, and it was said to contain some

0:21:03.200 --> 0:21:06.600
<v Speaker 2>four hundred kilograms or eight hundred and eighty two pounds

0:21:06.600 --> 0:21:10.160
<v Speaker 2>of bones estimated, And this would have included the likes

0:21:10.200 --> 0:21:17.560
<v Speaker 2>of mammoths, rhinos, bison, yaks, deer, gazelle, ancient brown bears,

0:21:18.240 --> 0:21:21.800
<v Speaker 2>and then various smaller creatures like foxes, wolves, every you know,

0:21:21.840 --> 0:21:25.639
<v Speaker 2>all the way down. These guys apparently weren't too proud

0:21:26.000 --> 0:21:28.680
<v Speaker 2>to drag you know, just about anything back to the layer. Now,

0:21:28.680 --> 0:21:32.240
<v Speaker 2>there are various other cave hyena dens that are you know,

0:21:32.840 --> 0:21:38.280
<v Speaker 2>important sites for paleontology, such as Zulithan Cave in Bavaria

0:21:38.760 --> 0:21:41.320
<v Speaker 2>in Germany. This site is thought to have been a

0:21:41.359 --> 0:21:45.760
<v Speaker 2>major cave bear den with cave hyenas, wolves and cave

0:21:45.880 --> 0:21:49.240
<v Speaker 2>lions co occupying or scavenging over time.

0:21:50.400 --> 0:21:54.840
<v Speaker 3>Now, if we know that different types of carnivores or

0:21:54.880 --> 0:21:59.239
<v Speaker 3>predators occupied these caves over different times, how are we

0:21:59.280 --> 0:22:03.000
<v Speaker 3>able to identi when they were occupied by different types

0:22:03.040 --> 0:22:06.439
<v Speaker 3>of predators or which predator it was that was responsible

0:22:06.480 --> 0:22:08.800
<v Speaker 3>for a specific kill or for eating a carcass that's

0:22:08.880 --> 0:22:09.600
<v Speaker 3>left in the cave.

0:22:10.280 --> 0:22:12.320
<v Speaker 2>Well, a part of it comes down to, you know,

0:22:12.359 --> 0:22:14.480
<v Speaker 2>looking at the bones and seeing the wear and tear

0:22:14.520 --> 0:22:16.679
<v Speaker 2>on them, because you know they would have been gnawing

0:22:16.680 --> 0:22:19.520
<v Speaker 2>on them. We can essentially, you know, use byte data

0:22:20.000 --> 0:22:23.520
<v Speaker 2>to understand this, like, Okay, what's been chewing on this bone? Well,

0:22:23.600 --> 0:22:26.879
<v Speaker 2>it looks like it was cave hyenus, So that's part

0:22:26.880 --> 0:22:29.479
<v Speaker 2>of it. And then there's just various other evidence in

0:22:29.520 --> 0:22:32.960
<v Speaker 2>the way that the the different layers of sediment have

0:22:33.040 --> 0:22:36.280
<v Speaker 2>built up and where the bones are in caves. I

0:22:36.320 --> 0:22:39.240
<v Speaker 2>was looking at a paper by Dietrix and Zach from

0:22:39.280 --> 0:22:42.600
<v Speaker 2>two thousand and six and the Bulletin of Geosciences. This

0:22:42.640 --> 0:22:46.520
<v Speaker 2>particular paper was looking at a at a cave in

0:22:46.560 --> 0:22:50.600
<v Speaker 2>the Bohemian Karst. This is in the Czech Republic and

0:22:51.000 --> 0:22:53.960
<v Speaker 2>like they had a nice little illustration in this paper

0:22:54.000 --> 0:22:55.760
<v Speaker 2>that I included here for you, Joe that kind of

0:22:55.800 --> 0:22:59.919
<v Speaker 2>like lays out like these different sort of the different

0:23:00.040 --> 0:23:03.880
<v Speaker 2>phases in occupation of a cave, with like cave bears

0:23:04.520 --> 0:23:07.359
<v Speaker 2>occupying a place and then well a cave bears being

0:23:07.480 --> 0:23:11.439
<v Speaker 2>larger organism kind of like you know, physically impacting the

0:23:11.440 --> 0:23:14.040
<v Speaker 2>shape of things. We've talked about this on the show before.

0:23:14.160 --> 0:23:17.320
<v Speaker 2>How you have something like a like a large sloth,

0:23:17.359 --> 0:23:20.880
<v Speaker 2>a giant sloth or or a bear, and when they're

0:23:21.000 --> 0:23:23.119
<v Speaker 2>habitating in a cave, they kind of create these little

0:23:23.800 --> 0:23:28.680
<v Speaker 2>indentions kind of like wallowing points, right, Yeah, and those

0:23:29.000 --> 0:23:31.560
<v Speaker 2>you know, in the preserved environment of a cave, those

0:23:32.600 --> 0:23:36.359
<v Speaker 2>those little indentions can remain over time. And what happens

0:23:36.359 --> 0:23:39.840
<v Speaker 2>when hyenas come in with their bones, well they're liable

0:23:39.840 --> 0:23:42.480
<v Speaker 2>to put those bones right in those indentions, fill those in.

0:23:43.160 --> 0:23:45.080
<v Speaker 2>So we we have evidence like that that we can

0:23:45.119 --> 0:23:48.080
<v Speaker 2>look at. And in this paper they also discussed that, yeah,

0:23:48.160 --> 0:23:50.639
<v Speaker 2>like you'd have cave bears and kive cave hyenas and

0:23:50.680 --> 0:23:54.520
<v Speaker 2>they seemingly like trade back and forth over usage of

0:23:54.560 --> 0:23:57.000
<v Speaker 2>the cave. So it's not just it's not necessarily a

0:23:57.000 --> 0:23:59.640
<v Speaker 2>situation where you know, either organism is in the cave

0:23:59.680 --> 0:24:02.400
<v Speaker 2>all the time, despite what you might come to think

0:24:02.480 --> 0:24:06.720
<v Speaker 2>watching an old caveman movie. But cave bears would use

0:24:06.760 --> 0:24:10.000
<v Speaker 2>the caves for birthing and hibernation, and then hyenas would

0:24:10.000 --> 0:24:14.399
<v Speaker 2>come in and use them periodically or seasonally for the

0:24:14.480 --> 0:24:17.200
<v Speaker 2>drag in their their their kills, or their scavenge the

0:24:17.359 --> 0:24:20.560
<v Speaker 2>meat and bones. So there's it seems like a fair

0:24:20.560 --> 0:24:23.760
<v Speaker 2>amount of traffic in these caves when they're you know,

0:24:23.840 --> 0:24:27.480
<v Speaker 2>cohabitated or uh. And then certainly you throw in neanderthals

0:24:27.480 --> 0:24:32.800
<v Speaker 2>and potential interactions with with our human ancestors where uh

0:24:32.960 --> 0:24:35.880
<v Speaker 2>they would be competing for the same cave environments at times.

0:24:36.359 --> 0:24:37.800
<v Speaker 2>Uh So, yeah, there's a lot of a lot of

0:24:37.840 --> 0:24:38.640
<v Speaker 2>back and forth here.

0:24:39.119 --> 0:24:42.000
<v Speaker 3>So what happened to the cave hyena? They no longer exist?

0:24:42.600 --> 0:24:43.000
<v Speaker 4>Correct?

0:24:43.119 --> 0:24:46.440
<v Speaker 2>Yes, yeah they are. They are quite extinct, and it's

0:24:46.480 --> 0:24:50.280
<v Speaker 2>it's notable that, in addition to changing climate, humans likely

0:24:50.320 --> 0:24:53.159
<v Speaker 2>played a key role in the extinction of cave hyenas,

0:24:53.240 --> 0:24:57.720
<v Speaker 2>likely out competing with it for prey and carcasses. Neanderthals,

0:24:57.720 --> 0:25:02.680
<v Speaker 2>of course, had already competed with cave hyenas with with

0:25:02.720 --> 0:25:05.440
<v Speaker 2>the with the cave Heyen is at least Cave Heyen

0:25:05.480 --> 0:25:08.439
<v Speaker 2>is at least scavenging Neanderthal dead, if not outright preying

0:25:08.440 --> 0:25:11.159
<v Speaker 2>on them from time to time as well. So that's

0:25:11.200 --> 0:25:12.840
<v Speaker 2>kind of interesting in and of itself. It's kind of

0:25:12.880 --> 0:25:15.679
<v Speaker 2>like who we became the new masters of carcasses and

0:25:15.720 --> 0:25:18.960
<v Speaker 2>bones to a certain extent, we didn't, you know, we

0:25:18.960 --> 0:25:21.400
<v Speaker 2>didn't put it all in the caves. We started doing

0:25:21.400 --> 0:25:24.800
<v Speaker 2>other things with the bodies, fully processing the bodies in

0:25:24.840 --> 0:25:28.760
<v Speaker 2>our own human ways, uh, and in doing so, ultimately

0:25:29.040 --> 0:25:32.960
<v Speaker 2>changing the shape of the natural world around us. But

0:25:33.080 --> 0:25:38.080
<v Speaker 2>it's it's interesting to contemplate potential human, early human interactions

0:25:38.119 --> 0:25:41.080
<v Speaker 2>with these caves and the creatures that made their homes there,

0:25:41.640 --> 0:25:44.479
<v Speaker 2>such as the Cave Hyena. Because again, caves in and

0:25:44.480 --> 0:25:46.840
<v Speaker 2>of themselves, as we've discussed in the show many times,

0:25:46.840 --> 0:25:50.240
<v Speaker 2>have long been places of wonder and mystery, places of

0:25:50.320 --> 0:25:55.240
<v Speaker 2>spiritual and cultural significance, places where one might find resources

0:25:55.280 --> 0:25:59.959
<v Speaker 2>some resources anyway, certainly find shelter, but also encounter danger.

0:26:00.080 --> 0:26:03.240
<v Speaker 2>And then caves were often seen as you know, gateways

0:26:03.320 --> 0:26:06.520
<v Speaker 2>to some sort of underworld. So it's kind of fitting,

0:26:06.600 --> 0:26:09.720
<v Speaker 2>or at least curious that our ancestors would have found

0:26:09.880 --> 0:26:12.919
<v Speaker 2>caves such as this just choked with bones. You know,

0:26:12.960 --> 0:26:15.800
<v Speaker 2>one can't help, but wonder, like, did we think about

0:26:15.800 --> 0:26:17.880
<v Speaker 2>them in such a way that like, here's a here

0:26:18.000 --> 0:26:21.600
<v Speaker 2>is a cavern full of bones, some of which are

0:26:22.000 --> 0:26:25.480
<v Speaker 2>bones like I have in my body. Is this, on

0:26:25.520 --> 0:26:28.399
<v Speaker 2>some level some gateway to a realm of death?

0:26:28.880 --> 0:26:31.399
<v Speaker 3>Yeah, it's an interesting question. I do wonder for a

0:26:31.400 --> 0:26:36.160
<v Speaker 3>prehistoric human, you know, Homo sapiens or Neanderthal, coming into

0:26:36.200 --> 0:26:39.359
<v Speaker 3>a cave and finding bones in there, what is the

0:26:39.400 --> 0:26:42.760
<v Speaker 3>most salient thing about that? What is your primary association?

0:26:42.920 --> 0:26:46.520
<v Speaker 3>Does that make you think competition for this piece of

0:26:46.560 --> 0:26:50.000
<v Speaker 3>shelter or does that make you think predator? Or does

0:26:50.080 --> 0:26:52.320
<v Speaker 3>that make you just think death? Or does that make

0:26:52.359 --> 0:26:56.720
<v Speaker 3>you think resources? You know, like, I wonder what is

0:26:56.760 --> 0:27:01.000
<v Speaker 3>the salience? Because obviously, you know, there are some just

0:27:01.040 --> 0:27:04.040
<v Speaker 3>sort of objective facts about the reason we associate bones

0:27:04.080 --> 0:27:07.200
<v Speaker 3>with death. But also I think we have to recognize

0:27:07.200 --> 0:27:11.600
<v Speaker 3>that a lot of our associations between bones and you know,

0:27:11.760 --> 0:27:16.240
<v Speaker 3>frightening horror ideas are culturally conditioned and contingent, and we

0:27:16.359 --> 0:27:19.000
<v Speaker 3>might have different associations. I don't know if you're if

0:27:19.040 --> 0:27:21.520
<v Speaker 3>you're like a butcher or something. You might have very

0:27:21.520 --> 0:27:24.639
<v Speaker 3>different thoughts about bones. You maybe mainly associate them with

0:27:24.840 --> 0:27:26.919
<v Speaker 3>making a living or with you know, with food.

0:27:27.440 --> 0:27:29.640
<v Speaker 2>That's a great point because especially when we're talking about

0:27:29.640 --> 0:27:33.720
<v Speaker 2>the humans here, the humans that are gonna outcompete the

0:27:33.880 --> 0:27:39.000
<v Speaker 2>cave hyenas for scavenge carcasses and and of course it

0:27:39.080 --> 0:27:43.960
<v Speaker 2>also kills of various mammals. You know, they're obviously people

0:27:43.960 --> 0:27:47.040
<v Speaker 2>that are far more connected to the killing and butchery

0:27:47.560 --> 0:27:52.160
<v Speaker 2>of animals than most of us are today. So yeah,

0:27:52.200 --> 0:27:55.359
<v Speaker 2>they might have just been like, hey, these this place

0:27:55.440 --> 0:27:56.359
<v Speaker 2>is great, This.

0:27:56.280 --> 0:27:57.640
<v Speaker 3>Is good hunting around here. Yeah.

0:27:57.720 --> 0:27:59.680
<v Speaker 2>Yeah, this is the kind of place I would love

0:27:59.720 --> 0:28:02.360
<v Speaker 2>to have, and these cave hyenas have figured it out

0:28:02.359 --> 0:28:05.400
<v Speaker 2>for themselves. Might have to steal some business from them.

0:28:06.600 --> 0:28:10.080
<v Speaker 2>One more bit of cave hyena information I wanted to

0:28:10.080 --> 0:28:14.400
<v Speaker 2>share for a little bit. There there was this argument

0:28:14.520 --> 0:28:17.720
<v Speaker 2>that the accumulation of bones and caves like these were

0:28:18.080 --> 0:28:22.560
<v Speaker 2>due not to prehistoric predators but to the Great Flood,

0:28:22.760 --> 0:28:26.360
<v Speaker 2>the Great Biblical flood. Okay, this was an idea that

0:28:26.720 --> 0:28:30.280
<v Speaker 2>English geologist William Buckland in particular, who lived seventeen eighty

0:28:30.280 --> 0:28:34.080
<v Speaker 2>four through eighteen fifty six, theorized early in his career

0:28:34.400 --> 0:28:39.040
<v Speaker 2>concerning Kirkdale Cave in North Yorkshire, but to his credit,

0:28:39.440 --> 0:28:42.440
<v Speaker 2>he later shifted his view based on his own findings.

0:28:43.160 --> 0:28:46.520
<v Speaker 2>So he came around and said, actually, you know, these

0:28:46.600 --> 0:28:50.720
<v Speaker 2>bones are this accumulation of bones, this is due to

0:28:50.760 --> 0:28:54.840
<v Speaker 2>cave hyenas, though for a while he maintained, Okay, cave

0:28:54.920 --> 0:28:58.040
<v Speaker 2>hyenas are the reason. But see this soil deposited on

0:28:58.120 --> 0:29:00.960
<v Speaker 2>top of the bones that's over from the Great flood.

0:29:01.200 --> 0:29:03.600
<v Speaker 2>But then he later abandons this idea as well. But

0:29:03.880 --> 0:29:06.680
<v Speaker 2>I like the idea that, like, here's somebody that is

0:29:08.320 --> 0:29:12.520
<v Speaker 2>identifying evidence for a biblical event in the natural world

0:29:12.880 --> 0:29:15.720
<v Speaker 2>and is not just illogically sticking to his guns, Like

0:29:16.040 --> 0:29:20.760
<v Speaker 2>his opinion is changing based on the accumulation of actual,

0:29:21.520 --> 0:29:22.880
<v Speaker 2>you know, objective evidence.

0:29:23.000 --> 0:29:26.000
<v Speaker 3>Yeah. Sure, respect to Buckland for updating. But though I haven't,

0:29:26.800 --> 0:29:28.680
<v Speaker 3>I would like to go read about this because I'm like,

0:29:28.960 --> 0:29:31.760
<v Speaker 3>why would the bones in the cave have anything to

0:29:31.800 --> 0:29:33.840
<v Speaker 3>do with the flood? Why would that be different than

0:29:33.840 --> 0:29:34.800
<v Speaker 3>bones anywhere else.

0:29:35.840 --> 0:29:37.840
<v Speaker 2>Yeah, I didn't go hard on this, but I mean

0:29:37.880 --> 0:29:40.120
<v Speaker 2>maybe the idea is, well, the water had to drain

0:29:40.200 --> 0:29:42.480
<v Speaker 2>somewhere and it took all those bodies with it, and

0:29:42.520 --> 0:29:45.560
<v Speaker 2>this is just like the clogged bone drain of the earth.

0:29:45.600 --> 0:29:48.640
<v Speaker 3>Oh that's cool. Okay, cave, that's my guess.

0:29:48.680 --> 0:29:49.440
<v Speaker 2>That's my guess.

0:29:49.840 --> 0:29:51.560
<v Speaker 3>The drain at the bottom of the bathtub.

0:29:51.760 --> 0:29:54.520
<v Speaker 2>Yeah, yeah, okay, yeah, where all the bones go. There

0:29:54.560 --> 0:29:54.840
<v Speaker 2>you go.

0:30:05.120 --> 0:30:08.120
<v Speaker 3>Okay. Well, given the distinction we talked about at the

0:30:08.160 --> 0:30:10.080
<v Speaker 3>beginning of the episode, I think we could sort the

0:30:10.120 --> 0:30:14.239
<v Speaker 3>cave hyena more into the middens category. This is a

0:30:14.480 --> 0:30:19.520
<v Speaker 3>somewhat chaotically assembled pile of bones or animal remains that

0:30:19.880 --> 0:30:21.840
<v Speaker 3>just happens to all end up in the same place

0:30:21.880 --> 0:30:24.800
<v Speaker 3>because of the lifestyle or living habits of the animal

0:30:24.880 --> 0:30:27.840
<v Speaker 3>that brought them there. Then we had the other category,

0:30:27.840 --> 0:30:31.280
<v Speaker 3>which was more like Texas Chainsaw massacre, where you have

0:30:31.600 --> 0:30:36.360
<v Speaker 3>a curated collection of bones, animal remains, things that are

0:30:36.640 --> 0:30:39.440
<v Speaker 3>put in a certain way for a certain reason due

0:30:39.440 --> 0:30:43.280
<v Speaker 3>to someone's obsessive interest, and how that's frightening in a

0:30:43.320 --> 0:30:46.600
<v Speaker 3>different way than the midden is than just the predator's midden.

0:30:47.200 --> 0:30:50.280
<v Speaker 3>I wonder when we're done talking about the next example,

0:30:50.440 --> 0:30:52.520
<v Speaker 3>which category you'd put it in, because I think it's

0:30:52.520 --> 0:30:54.760
<v Speaker 3>almost kind of a straddler. It could go either way.

0:30:56.120 --> 0:30:58.920
<v Speaker 3>So I want to talk about an article published in

0:30:59.000 --> 0:31:02.520
<v Speaker 3>the journal Science in April of this year, twenty twenty

0:31:02.520 --> 0:31:07.280
<v Speaker 3>five by the researchers Daniel Rubinoff, Michael San Jose and

0:31:07.480 --> 0:31:14.760
<v Speaker 3>Camielle Duran Weird called Hawaiian caterpillar patrols spiderwebs camouflaged in

0:31:14.760 --> 0:31:20.000
<v Speaker 3>insect praise body parts. All three authors here are entomologists

0:31:20.040 --> 0:31:24.800
<v Speaker 3>affiliated with the University of Hawaii at Manoa. So the

0:31:24.840 --> 0:31:29.040
<v Speaker 3>authors begin this paper by talking about the interesting evolutionary

0:31:29.120 --> 0:31:34.040
<v Speaker 3>laboratory of the Hawaiian Islands. Because of Hawaii's geographic isolation

0:31:34.240 --> 0:31:38.720
<v Speaker 3>from mainland populations for so long, it evolved lots of

0:31:38.960 --> 0:31:43.880
<v Speaker 3>weird and interesting invertebrates, especially when it comes to Lepidoptera.

0:31:44.920 --> 0:31:49.400
<v Speaker 3>Now a reminder, Lepidoptera is the insect order containing moths

0:31:49.480 --> 0:31:52.360
<v Speaker 3>and butterflies. A lot of people already know this, but

0:31:52.840 --> 0:31:57.960
<v Speaker 3>just to be clear, caterpillars are the same animals as

0:31:58.040 --> 0:32:02.080
<v Speaker 3>the winged forms of moths butterflies, simply at different stages

0:32:02.120 --> 0:32:05.560
<v Speaker 3>of life. So caterpillars are the larval stage of the

0:32:05.640 --> 0:32:09.240
<v Speaker 3>lepidopter in life cycle, in which the insect is this

0:32:09.280 --> 0:32:11.600
<v Speaker 3>you know, fat little grub shape and it crawls around

0:32:11.680 --> 0:32:14.440
<v Speaker 3>and it chomps the world. It's bulking up on food

0:32:15.000 --> 0:32:18.800
<v Speaker 3>before finding a place to settle down and pupate. When

0:32:18.840 --> 0:32:22.960
<v Speaker 3>it goes into the pupi phase, it undergoes metamorphosis, and

0:32:23.000 --> 0:32:26.120
<v Speaker 3>then the winged forms that we think of as moths

0:32:26.120 --> 0:32:28.480
<v Speaker 3>and butterflies kind of the main idea of what this

0:32:28.600 --> 0:32:33.520
<v Speaker 3>insect is. The winged forms are the reproductively mature stage

0:32:33.720 --> 0:32:37.360
<v Speaker 3>after the metamorphosis of the pupa. This is the stage

0:32:37.440 --> 0:32:41.640
<v Speaker 3>in which these insects mate and lay eggs. And the

0:32:41.680 --> 0:32:46.640
<v Speaker 3>authors of this paper mention several fascinating caterpillar adaptations found

0:32:46.720 --> 0:32:50.000
<v Speaker 3>in the Hawaiian islands, specifically in the larval phase of

0:32:50.360 --> 0:32:54.680
<v Speaker 3>local lepidopterans. There are caterpillars in Hawaii that hunt snails.

0:32:55.120 --> 0:32:58.720
<v Speaker 3>There are caterpillars that are amphibious or like live underwater.

0:32:59.720 --> 0:33:03.360
<v Speaker 3>There are caterpillars that work as ambush predators. You know,

0:33:03.400 --> 0:33:05.280
<v Speaker 3>they kind of lie in wait and they hide in

0:33:05.440 --> 0:33:09.200
<v Speaker 3>leaves and then they attack their prey. And this article

0:33:09.280 --> 0:33:12.680
<v Speaker 3>is about another caterpillar from Hawaii that can be added

0:33:12.760 --> 0:33:16.800
<v Speaker 3>to that list of beautiful monstrosities, the so called bone

0:33:16.920 --> 0:33:22.920
<v Speaker 3>collector caterpillar of the moth genus Hyposmocoma. Which the author's

0:33:23.040 --> 0:33:28.080
<v Speaker 3>rite is notable for quote, a bizarre housekeeping regimen not

0:33:28.160 --> 0:33:32.640
<v Speaker 3>reported for any other insect, and an ecology not recorded

0:33:32.680 --> 0:33:38.760
<v Speaker 3>elsewhere in the order Lepidoptera. So what are these unique traits? Well,

0:33:38.880 --> 0:33:42.400
<v Speaker 3>the top line is that this is the first documented

0:33:42.520 --> 0:33:48.680
<v Speaker 3>caterpillar evolved to depend on spider webs as a habitat

0:33:48.880 --> 0:33:52.600
<v Speaker 3>spider webs. And to be clear, we're not talking about

0:33:52.640 --> 0:33:57.400
<v Speaker 3>like exclusively abandoned old spider webs or something. We're talking

0:33:57.440 --> 0:34:01.760
<v Speaker 3>about active spider webs with a spider in them.

0:34:02.120 --> 0:34:02.640
<v Speaker 2>Oh wow.

0:34:02.760 --> 0:34:07.880
<v Speaker 3>Yeah. These caterpillars typically dwell in webs within like recesses,

0:34:07.920 --> 0:34:11.080
<v Speaker 3>So you would find these webs in tree hollows or

0:34:11.160 --> 0:34:14.160
<v Speaker 3>rock hollows or in the voids inside of fallen log

0:34:14.440 --> 0:34:17.680
<v Speaker 3>We're talking about those kind of three dimensional, tangled looking

0:34:17.719 --> 0:34:21.200
<v Speaker 3>webs you see in a little depression or indentation somewhere

0:34:21.200 --> 0:34:25.200
<v Speaker 3>in the natural world. So that's where you're gonna find

0:34:25.239 --> 0:34:28.160
<v Speaker 3>these caterpillars in webs like that. Now, that alone is

0:34:28.320 --> 0:34:31.759
<v Speaker 3>pretty weird. It's kind of like imagining a rabbit species

0:34:31.840 --> 0:34:34.840
<v Speaker 3>that is evolved specifically to live in wolf dens.

0:34:35.320 --> 0:34:38.200
<v Speaker 2>Yeah, yeah, this seems like this seems like this would

0:34:38.239 --> 0:34:42.239
<v Speaker 2>be the place most small creatures would not want to

0:34:42.280 --> 0:34:45.080
<v Speaker 2>find themselves, leave it to the spiders and their prey.

0:34:45.480 --> 0:34:48.400
<v Speaker 3>Right, so the author is right quote. Although caterpillars and

0:34:48.440 --> 0:34:51.840
<v Speaker 3>spiders are common in the same environments all over the world,

0:34:52.320 --> 0:34:56.520
<v Speaker 3>only this single caterpillar lineage in Hawaii is known to

0:34:56.560 --> 0:35:00.080
<v Speaker 3>have made the leap to spider cohabitation. In fact, I

0:35:00.120 --> 0:35:02.160
<v Speaker 3>was looking this up in some other sources to see

0:35:02.160 --> 0:35:05.640
<v Speaker 3>if there was any contradiction on this. The only real

0:35:05.680 --> 0:35:08.520
<v Speaker 3>counterexample I found was in a write up of this

0:35:08.640 --> 0:35:12.920
<v Speaker 3>paper in The New York Times by Jack Tomisia, which

0:35:13.000 --> 0:35:17.640
<v Speaker 3>quoted an entomologist at the University of Connecticut named David Wagner,

0:35:18.320 --> 0:35:20.880
<v Speaker 3>who didn't really contradict this, but said he was aware

0:35:20.960 --> 0:35:24.120
<v Speaker 3>of only one other moth species that had anything to

0:35:24.120 --> 0:35:26.800
<v Speaker 3>do with spider webs. It didn't like live there entirely,

0:35:27.400 --> 0:35:31.279
<v Speaker 3>but there was one moth species that was vegetarian and

0:35:31.320 --> 0:35:35.160
<v Speaker 3>would sometimes eat plant material caught in spider webs. But

0:35:35.239 --> 0:35:37.759
<v Speaker 3>this is the only example that we know of anywhere

0:35:37.800 --> 0:35:41.399
<v Speaker 3>of a caterpillar that lives in fully evolved to live

0:35:41.600 --> 0:35:45.040
<v Speaker 3>in the habitat of a spider's web. Another thing that's

0:35:45.239 --> 0:35:48.600
<v Speaker 3>crazy about this is that it's not just like caterpillar

0:35:48.640 --> 0:35:51.920
<v Speaker 3>goes crawling around the world until it finds a spider web.

0:35:52.239 --> 0:35:54.680
<v Speaker 3>From what I was reading, it seems like the moths

0:35:54.680 --> 0:35:59.000
<v Speaker 3>here will actually try to lay their eggs in spider webs.

0:35:59.080 --> 0:36:02.239
<v Speaker 3>Oh wow, So you know the caterpillar hatches from the

0:36:02.320 --> 0:36:05.719
<v Speaker 3>egg in the web, makes its home there, and just

0:36:05.880 --> 0:36:10.879
<v Speaker 3>lives there. That's that is its environment, and there are

0:36:10.920 --> 0:36:15.439
<v Speaker 3>some freaky specializations that make this arrangement work. Explaining both

0:36:15.560 --> 0:36:20.160
<v Speaker 3>the why and the how of caterpillar cohabitation with a spider.

0:36:21.200 --> 0:36:24.720
<v Speaker 3>The major part of the why is answered by another

0:36:24.760 --> 0:36:28.680
<v Speaker 3>strange fact about the species. The bone collector caterpillar is

0:36:28.760 --> 0:36:34.120
<v Speaker 3>a carnivore. Now, carnivorous caterpillars are, from an evolutionary perspective,

0:36:34.360 --> 0:36:39.520
<v Speaker 3>pretty rare. The authors note that of all existing insect orders,

0:36:39.960 --> 0:36:44.960
<v Speaker 3>Lepidoptera is actually the most herbivorous overall, So moths and butterflies,

0:36:45.280 --> 0:36:48.680
<v Speaker 3>in all of their life cycles are the most vegetarian

0:36:48.760 --> 0:36:52.120
<v Speaker 3>of all branches of the class Insecta, but there are

0:36:52.239 --> 0:36:57.319
<v Speaker 3>a few exceptions. About zero point one three percent of

0:36:57.360 --> 0:37:01.040
<v Speaker 3>the roughly two hundred thousand known moth and butterfly species

0:37:01.360 --> 0:37:05.200
<v Speaker 3>practice some form of predation in their caterpillar stage.

0:37:05.680 --> 0:37:07.759
<v Speaker 2>You know, I think most of us have to think

0:37:07.840 --> 0:37:12.960
<v Speaker 2>back to probably our initial introduction to caterpillar anatomy and

0:37:13.560 --> 0:37:17.720
<v Speaker 2>physiology and behavior, that being the hungry, hungry caterpillar. Yes,

0:37:18.880 --> 0:37:22.120
<v Speaker 2>that basically tells you what everything you need to know. Right,

0:37:22.360 --> 0:37:26.120
<v Speaker 2>Caterpillars have to eat. That's what they're here to do,

0:37:26.200 --> 0:37:28.600
<v Speaker 2>to eat a lot so that they can become that

0:37:28.719 --> 0:37:33.000
<v Speaker 2>reproductive flying adult. Therefore, you know, it makes sense that

0:37:33.440 --> 0:37:35.920
<v Speaker 2>most of them would be vegetarian, most of them would

0:37:35.920 --> 0:37:39.680
<v Speaker 2>depend on plant matter in order to bulk up their

0:37:39.719 --> 0:37:46.120
<v Speaker 2>own mass for metamorphosis. I guess you can imagine why

0:37:46.160 --> 0:37:49.440
<v Speaker 2>there would be more of that as compared to some

0:37:49.480 --> 0:37:52.080
<v Speaker 2>sort of a carnivorous body plan that is going to

0:37:52.120 --> 0:37:54.200
<v Speaker 2>depend on just eating lots and lots of meat in

0:37:54.280 --> 0:37:55.640
<v Speaker 2>order to make that metamorphosis.

0:37:55.760 --> 0:37:58.680
<v Speaker 3>Well, yeah, you can think about this evolutionary energy dilemma.

0:37:59.440 --> 0:38:03.640
<v Speaker 3>Of course, animal based foods do tend to be richer

0:38:03.719 --> 0:38:05.960
<v Speaker 3>in nutrients, they're going to be more high calorie, but

0:38:05.960 --> 0:38:08.799
<v Speaker 3>they're also a lot harder to come by. And you know,

0:38:09.000 --> 0:38:12.480
<v Speaker 3>the plant food is abundant and it's a lot easier

0:38:12.480 --> 0:38:14.919
<v Speaker 3>to get to as long as you can get enough

0:38:14.960 --> 0:38:16.560
<v Speaker 3>of it and you can process.

0:38:16.120 --> 0:38:18.960
<v Speaker 2>It right and deal with any kind of self defensive

0:38:19.680 --> 0:38:22.879
<v Speaker 2>involved adaptations on the part of the plant. But there's

0:38:22.960 --> 0:38:25.560
<v Speaker 2>you know, an arms race there between each side of

0:38:25.600 --> 0:38:26.080
<v Speaker 2>the equation.

0:38:26.440 --> 0:38:29.920
<v Speaker 3>That's right. So, yeah, so only about zero point one

0:38:30.040 --> 0:38:32.920
<v Speaker 3>three percent of the two hundred thousand known moth and

0:38:32.960 --> 0:38:37.799
<v Speaker 3>butterfly species practice some form of carnivorous predation. This is

0:38:37.880 --> 0:38:41.280
<v Speaker 3>one of those those rare caterpillars. Now a minute ago

0:38:41.520 --> 0:38:45.239
<v Speaker 3>we already mentioned carnivorous caterpillars in Hawaii, the ones that

0:38:45.320 --> 0:38:49.520
<v Speaker 3>hunt snails or maybe disguise themselves among leaves and launch

0:38:49.520 --> 0:38:52.759
<v Speaker 3>an ambush attack. But those things, they sound like a

0:38:52.760 --> 0:38:56.040
<v Speaker 3>lot of work. What if you could get somebody else

0:38:56.160 --> 0:38:59.279
<v Speaker 3>to do most of the trapping and killing for you,

0:39:00.080 --> 0:39:04.080
<v Speaker 3>If you could just kinda crawl around and suck up

0:39:04.120 --> 0:39:08.480
<v Speaker 3>the leftovers of a perfectly evolved predator.

0:39:08.680 --> 0:39:11.799
<v Speaker 2>It's not a bad plan. It's one that prehostoric cave

0:39:11.880 --> 0:39:15.480
<v Speaker 2>hyenas and prehostaric humans in some situations would have could

0:39:15.520 --> 0:39:16.360
<v Speaker 2>definitely get behind.

0:39:17.200 --> 0:39:19.360
<v Speaker 3>And yeah, so here we come to the why of

0:39:19.440 --> 0:39:23.920
<v Speaker 3>the bone collector caterpillar. These carnivorous insects live in spider

0:39:23.920 --> 0:39:27.680
<v Speaker 3>webs because spider webs are great places to, in the

0:39:27.680 --> 0:39:31.719
<v Speaker 3>words of Mick Jagger, get the meat. That's where they

0:39:31.760 --> 0:39:35.120
<v Speaker 3>get the meat. The author's right quote. Bone collector caterpillars

0:39:35.280 --> 0:39:40.560
<v Speaker 3>crawl through the jumble of web and detritus and opportunistically

0:39:40.680 --> 0:39:45.239
<v Speaker 3>eat any weakened or recently deceased insects they come across, eg.

0:39:46.040 --> 0:39:49.800
<v Speaker 3>Cased spider prey, so stuff the spider might have left

0:39:49.840 --> 0:39:53.040
<v Speaker 3>over after eating or might be saving for later. That's

0:39:53.080 --> 0:39:57.520
<v Speaker 3>caterpillars now, yum yum. And they will even chew through

0:39:57.840 --> 0:40:00.560
<v Speaker 3>the silk of the web to get to the meal

0:40:00.719 --> 0:40:03.960
<v Speaker 3>so they can they can remodel the web environment to

0:40:04.040 --> 0:40:06.160
<v Speaker 3>suit their needs if they need to get to food

0:40:06.239 --> 0:40:07.040
<v Speaker 3>by going through it.

0:40:07.440 --> 0:40:08.480
<v Speaker 2>Ah devious.

0:40:09.360 --> 0:40:12.279
<v Speaker 3>I sort of mentioned this already, but the bone collector caterpillars.

0:40:12.280 --> 0:40:14.640
<v Speaker 3>One thing about them is you're typically not going to

0:40:14.760 --> 0:40:20.760
<v Speaker 3>find them in the plane shaped webs or flat sheet

0:40:20.840 --> 0:40:23.120
<v Speaker 3>webs that you would see suspended out in the air

0:40:23.160 --> 0:40:25.279
<v Speaker 3>between branches, the kinds of things that you're going to

0:40:25.320 --> 0:40:28.120
<v Speaker 3>expect a butterfly in its adult stage to fly into.

0:40:29.000 --> 0:40:32.279
<v Speaker 3>You're instead going to find them in these these tangled,

0:40:32.440 --> 0:40:36.400
<v Speaker 3>three dimensional webs that you see spun in enclosed spaces

0:40:36.480 --> 0:40:41.880
<v Speaker 3>like recesses in wood. Because these caterpillars specialize in the

0:40:41.920 --> 0:40:45.560
<v Speaker 3>three dimensional webs, they can generally reach prey in any

0:40:45.640 --> 0:40:48.000
<v Speaker 3>part of the web, and it seems that they are

0:40:48.120 --> 0:40:51.960
<v Speaker 3>quite adaptable scavengers and predators. In other words, they can

0:40:52.080 --> 0:40:56.320
<v Speaker 3>they can and will eat any insect that is immobilized, weak,

0:40:56.480 --> 0:41:00.600
<v Speaker 3>or slow moving. In fact, they will even cannibalize each other,

0:41:01.200 --> 0:41:05.120
<v Speaker 3>which is why you typically only find one bone collector

0:41:05.160 --> 0:41:08.600
<v Speaker 3>caterpillar per spider web. If there were two, there would

0:41:08.640 --> 0:41:11.440
<v Speaker 3>soon be only one. The larger would eat the smaller.

0:41:11.760 --> 0:41:13.480
<v Speaker 2>Ah, there can be only one.

0:41:13.560 --> 0:41:14.200
<v Speaker 4>Gotcha.

0:41:14.440 --> 0:41:16.480
<v Speaker 3>Now, where does the name come from? Why are they

0:41:16.640 --> 0:41:20.080
<v Speaker 3>bone collectors? It's sort of a cute name, because, of

0:41:20.080 --> 0:41:23.360
<v Speaker 3>course we're not talking about bones here in the mammalian sense,

0:41:24.080 --> 0:41:26.080
<v Speaker 3>In the vertebrate sense, we're going to be talking about

0:41:26.680 --> 0:41:32.239
<v Speaker 3>almost exclusively prey with exoskeletons arthropods. But this is the

0:41:32.280 --> 0:41:37.560
<v Speaker 3>other fascinating thing about them. These caterpillars cover their bodies

0:41:38.120 --> 0:41:43.560
<v Speaker 3>in portable cases made of silk, and to the outside

0:41:43.760 --> 0:41:48.520
<v Speaker 3>of that silk case that they make, they attach chopped

0:41:48.640 --> 0:41:53.279
<v Speaker 3>up insect body parts. They don't seem to be very

0:41:53.320 --> 0:41:57.839
<v Speaker 3>picky about what kinds of dead bodies are allowed to contribute.

0:41:58.239 --> 0:42:01.480
<v Speaker 3>The authors report a single catterp having remains from as

0:42:01.480 --> 0:42:04.800
<v Speaker 3>many as six different insect families stuck to the outside

0:42:04.840 --> 0:42:07.040
<v Speaker 3>of it at once. In fact, Rob, I've got a

0:42:07.040 --> 0:42:09.399
<v Speaker 3>photo from the article for you to look at here

0:42:10.640 --> 0:42:12.960
<v Speaker 3>if you can see it in the outline. On the left,

0:42:13.040 --> 0:42:16.400
<v Speaker 3>we have an adult female specimen of the bone collector

0:42:16.440 --> 0:42:19.480
<v Speaker 3>caterpillar moth. This is what it looks like after metamorphosis.

0:42:19.840 --> 0:42:22.640
<v Speaker 3>The adult moth is kind of a furry brown and

0:42:22.719 --> 0:42:26.920
<v Speaker 3>white spotted appearance. It looks almost looks almost a Malian

0:42:27.000 --> 0:42:28.279
<v Speaker 3>in a way. I see it kind of you know,

0:42:28.320 --> 0:42:31.520
<v Speaker 3>looks like you would want to stroke the hide and dignified.

0:42:31.680 --> 0:42:34.440
<v Speaker 2>And this is a dignified looking moth. Yes, the no

0:42:34.800 --> 0:42:38.320
<v Speaker 2>hint of any kind of grotesque, shady past.

0:42:38.760 --> 0:42:42.160
<v Speaker 3>On the right, we have the decorated silk case of

0:42:42.200 --> 0:42:45.960
<v Speaker 3>a single caterpillar in the larval stage, which is absolutely

0:42:46.080 --> 0:42:51.440
<v Speaker 3>spangled with invertebrate death. It has an ant head, fly wings,

0:42:51.760 --> 0:42:56.600
<v Speaker 3>fly legs, a weavil head, a bark beetle abdomen, and

0:42:56.640 --> 0:42:59.600
<v Speaker 3>then all over in between all that what look like

0:43:00.080 --> 0:43:05.800
<v Speaker 3>jointed orange tubes, like little orange straws. These, in fact,

0:43:05.960 --> 0:43:10.560
<v Speaker 3>are not prey animal pieces. These are parts of the

0:43:10.600 --> 0:43:16.359
<v Speaker 3>host spider's exoskeleton leftover after molting. So it is the

0:43:16.360 --> 0:43:21.960
<v Speaker 3>caterpillar has a bone armor of spider integument and dead

0:43:22.280 --> 0:43:25.000
<v Speaker 3>hollow pieces of insect exoskeletons.

0:43:26.600 --> 0:43:31.480
<v Speaker 2>Oh my goodness, it looks just absolutely apocalyptic.

0:43:31.080 --> 0:43:35.879
<v Speaker 3>Like it shambling junkyard of insect death.

0:43:36.360 --> 0:43:40.120
<v Speaker 2>Yeah, like, I mean, one instant you know, pop culture

0:43:40.200 --> 0:43:45.640
<v Speaker 2>fantasy comparison is, of course, the character Rattleshirt from Game

0:43:45.680 --> 0:43:48.839
<v Speaker 2>of Thrones. Yeah, the characters wearing armor that's made from

0:43:48.840 --> 0:43:51.680
<v Speaker 2>like human bones and all Lord of Bones. Yeah, but

0:43:51.719 --> 0:43:54.040
<v Speaker 2>that looks far more dignified than what we have here.

0:43:54.040 --> 0:43:57.600
<v Speaker 2>What we see with the bone collectorc caterpillar is much

0:43:57.640 --> 0:44:01.960
<v Speaker 2>more Texas chainsaw massacre. It is just pure chaos.

0:44:02.680 --> 0:44:06.760
<v Speaker 3>Now. The fact that the caterpillar's silk case is covered

0:44:06.920 --> 0:44:12.319
<v Speaker 3>in an insect slaughterhouse might make it seem like the

0:44:12.320 --> 0:44:14.480
<v Speaker 3>stuff just kind of clings on their at random, right,

0:44:14.560 --> 0:44:16.600
<v Speaker 3>Like maybe it just gets stuck there as it crawls

0:44:16.600 --> 0:44:21.000
<v Speaker 3>around in the web. But no, there is diversity and variety,

0:44:21.120 --> 0:44:25.160
<v Speaker 3>but it is not just randomly assembled or chaotic. The

0:44:25.200 --> 0:44:29.480
<v Speaker 3>authors describe how you can observe the caterpillars carefully shopping

0:44:29.640 --> 0:44:32.319
<v Speaker 3>for just the right parts and shaping them, you know,

0:44:32.400 --> 0:44:35.440
<v Speaker 3>to fit just right. They will pick up an ant

0:44:35.480 --> 0:44:38.000
<v Speaker 3>head or a beetle leg, whatever the part might be,

0:44:38.719 --> 0:44:42.360
<v Speaker 3>and then they will measure it for size before adhering

0:44:42.480 --> 0:44:46.240
<v Speaker 3>it to their silk case. So they will rotate it around,

0:44:46.480 --> 0:44:50.120
<v Speaker 3>rotate the body part, feel it with their mandibles, and

0:44:50.200 --> 0:44:54.399
<v Speaker 3>if it's too big, the caterpillar will often modify it

0:44:54.480 --> 0:44:57.880
<v Speaker 3>by chewing it down until it's just the right size.

0:44:58.520 --> 0:45:02.160
<v Speaker 2>Oh yeah, this gets even more horror show by the moment.

0:45:12.680 --> 0:45:16.120
<v Speaker 3>Here's an interesting thing. The authors of this paper found

0:45:16.120 --> 0:45:19.120
<v Speaker 3>that if you put one of these caterpillars in captivity

0:45:19.600 --> 0:45:23.520
<v Speaker 3>and you deny it access to insect body parts, but

0:45:23.640 --> 0:45:28.080
<v Speaker 3>supply it with little, similarly shaped things that are other

0:45:28.160 --> 0:45:31.840
<v Speaker 3>than insect body parts, it will not use them. So

0:45:32.080 --> 0:45:35.000
<v Speaker 3>it is not like a hermit crab that will take

0:45:35.040 --> 0:45:38.920
<v Speaker 3>up residence in a vienna sausage. Can the bone collector says,

0:45:39.360 --> 0:45:42.759
<v Speaker 3>chopped up, chewed down dead bodies or nothing, that's all

0:45:42.800 --> 0:45:46.640
<v Speaker 3>that's all I want. And this is this is interesting

0:45:46.719 --> 0:45:50.839
<v Speaker 3>because I think this implies possibly the fact that they're

0:45:50.880 --> 0:45:54.799
<v Speaker 3>corpses and the remnants of spider molting that may be

0:45:55.120 --> 0:45:59.560
<v Speaker 3>crucial to the caterpillar's survival somehow. The author is right

0:45:59.680 --> 0:46:03.080
<v Speaker 3>quote given the context, it is possible that the array

0:46:03.200 --> 0:46:07.280
<v Speaker 3>of partially consumed body parts and shed spider skins covering

0:46:07.320 --> 0:46:12.680
<v Speaker 3>the case forms effective camouflage from a spider landlord. The

0:46:12.760 --> 0:46:17.320
<v Speaker 3>caterpillars have never been found predated by spiders or wrapped

0:46:17.360 --> 0:46:21.239
<v Speaker 3>in spider silk, so these authors here have studied these

0:46:21.239 --> 0:46:23.600
<v Speaker 3>things for years. By the way, this is a research

0:46:23.800 --> 0:46:26.480
<v Speaker 3>years in the making, and there is not a single

0:46:26.560 --> 0:46:32.440
<v Speaker 3>documented instance of these caterpillars slipping up and becoming spider food.

0:46:32.600 --> 0:46:36.800
<v Speaker 3>So is it possible that the bone cloak hides them somehow,

0:46:36.920 --> 0:46:41.160
<v Speaker 3>makes them invisible or makes them uninteresting to this power

0:46:41.239 --> 0:46:43.560
<v Speaker 3>predator a few centimeters away.

0:46:44.400 --> 0:46:48.880
<v Speaker 2>Like any given zombie film or comic book where someone

0:46:49.120 --> 0:46:53.160
<v Speaker 2>covers themselves in zombie gore in order to pass through

0:46:53.160 --> 0:46:54.239
<v Speaker 2>the horde unnoticed.

0:46:54.520 --> 0:46:58.719
<v Speaker 3>It could be. Yeah, we don't exactly know now. The

0:46:58.760 --> 0:47:03.200
<v Speaker 3>authors also note the adaptability of the bone collectors survival strategy.

0:47:03.440 --> 0:47:06.440
<v Speaker 3>I thought this was really interesting. While the bone collector

0:47:06.480 --> 0:47:12.000
<v Speaker 3>caterpillar is native to Hawaii, of the four different species

0:47:12.040 --> 0:47:15.120
<v Speaker 3>of spider in whose webs they have been found none

0:47:15.200 --> 0:47:19.160
<v Speaker 3>of those spiders is native to Hawaii, and so the

0:47:19.200 --> 0:47:22.680
<v Speaker 3>authors note that like of course, non native species dominate

0:47:22.760 --> 0:47:25.719
<v Speaker 3>many of Hawaii's ecosystems. This is something we've talked about

0:47:25.760 --> 0:47:29.000
<v Speaker 3>on the show before. So if this this moth had

0:47:29.040 --> 0:47:32.680
<v Speaker 3>been too dependent on just a single species of native

0:47:32.719 --> 0:47:36.600
<v Speaker 3>spider as its web host, it might not have survived

0:47:36.760 --> 0:47:40.760
<v Speaker 3>recent exchanges with the mainland. But it's adaptable to different

0:47:40.760 --> 0:47:44.840
<v Speaker 3>types of spider webs, so it has. And yet human

0:47:44.960 --> 0:47:49.440
<v Speaker 3>encounters with these caterpillars are pretty rare. The author's right quote.

0:47:49.840 --> 0:47:54.799
<v Speaker 3>These caterpillars are only rarely encountered on. Over twenty two

0:47:54.880 --> 0:47:57.520
<v Speaker 3>years of fieldwork and over one hundred and fifty field

0:47:57.560 --> 0:48:01.320
<v Speaker 3>surveys in the area where they occur have yielded only

0:48:01.440 --> 0:48:06.080
<v Speaker 3>sixty two individuals, and most apparently suitable spiderwebs do not

0:48:06.239 --> 0:48:07.400
<v Speaker 3>host them.

0:48:07.560 --> 0:48:10.280
<v Speaker 2>Oh wow, So they would seem to be a rarity

0:48:10.400 --> 0:48:12.719
<v Speaker 2>even among the sort of webs that they could call.

0:48:13.320 --> 0:48:15.799
<v Speaker 3>Yeah, assuming we know where to look. But they do

0:48:15.840 --> 0:48:17.720
<v Speaker 3>seem to be, as far as we can tell, limited

0:48:17.760 --> 0:48:22.640
<v Speaker 3>to this small range, and as best we can tell,

0:48:22.760 --> 0:48:27.440
<v Speaker 3>they're contained entirely within this like fifteen square kilometer forested

0:48:27.480 --> 0:48:30.680
<v Speaker 3>area of a mountain range on the island of Oahu,

0:48:31.400 --> 0:48:34.600
<v Speaker 3>though they used to have a larger range, we think.

0:48:34.760 --> 0:48:38.280
<v Speaker 3>Through filo genomic analysis, the authors found that the species

0:48:38.360 --> 0:48:42.320
<v Speaker 3>is at least six million years old, several million years

0:48:42.360 --> 0:48:46.560
<v Speaker 3>older than the island of Oahu itself, and probably at

0:48:46.640 --> 0:48:49.800
<v Speaker 3>least a million years older than any of the major

0:48:49.880 --> 0:48:54.440
<v Speaker 3>Hawaiian islands that remain today, which implies that this lineage

0:48:54.480 --> 0:48:59.000
<v Speaker 3>probably first appeared on Hawaiian islands that no longer exist

0:48:59.360 --> 0:49:02.239
<v Speaker 3>or you know, have eroded into the sea, and then

0:49:02.280 --> 0:49:06.080
<v Speaker 3>it migrated to inhabit new islands that came up, including

0:49:06.480 --> 0:49:10.320
<v Speaker 3>islands that do still today exist in the Hawaiian island chain,

0:49:10.400 --> 0:49:12.600
<v Speaker 3>but no longer have these caterpillars on them.

0:49:13.000 --> 0:49:15.120
<v Speaker 2>Oh wow, now that new they have almost kind of

0:49:15.120 --> 0:49:17.720
<v Speaker 2>like elder god status, right, and some sort of elder

0:49:17.760 --> 0:49:21.720
<v Speaker 2>creature like we hail from islands that no longer exist.

0:49:21.480 --> 0:49:26.759
<v Speaker 3>From the lens that sank we came And so the

0:49:26.800 --> 0:49:30.800
<v Speaker 3>paper also does get into conservation concerns. Of course, Hawaii

0:49:30.880 --> 0:49:33.239
<v Speaker 3>is one of the extinction capitals of the world, with

0:49:33.400 --> 0:49:37.760
<v Speaker 3>introduced species and other factors threatening native life. They write, quote,

0:49:37.760 --> 0:49:40.879
<v Speaker 3>the current range of the bone collector lineage is now

0:49:40.960 --> 0:49:44.160
<v Speaker 3>limited to a single species holding on in a fragment

0:49:44.160 --> 0:49:48.200
<v Speaker 3>of isolated forest that is increasingly beset with invasive species,

0:49:48.600 --> 0:49:52.360
<v Speaker 3>exemplifying the vulnerability of many endemic Hawaiian insects and the

0:49:52.440 --> 0:49:56.680
<v Speaker 3>ecosystems on which they depend. So, of course, you know

0:49:56.719 --> 0:50:00.680
<v Speaker 3>that highlights conservation concerns that are true of all different

0:50:00.760 --> 0:50:05.040
<v Speaker 3>kinds of Hawaiian wildlife, and especially wildlife island wildlife all

0:50:05.080 --> 0:50:05.680
<v Speaker 3>over the world.

0:50:06.840 --> 0:50:09.799
<v Speaker 2>Yeah. Yeah, thinking about how how fragile something like this

0:50:10.040 --> 0:50:13.520
<v Speaker 2>is and how it could have easily passed away without

0:50:13.600 --> 0:50:17.480
<v Speaker 2>us having a chance to even understand it and chronicle it.

0:50:18.120 --> 0:50:23.080
<v Speaker 2>You know what other strange oddities of the natural world

0:50:23.360 --> 0:50:27.120
<v Speaker 2>have just completely passed away without evidence. You know, we're

0:50:27.200 --> 0:50:28.080
<v Speaker 2>lucky to have this.

0:50:28.680 --> 0:50:32.799
<v Speaker 3>But it is really amazing to think about the spider's

0:50:32.920 --> 0:50:35.799
<v Speaker 3>web as a life niche for something other than the

0:50:35.840 --> 0:50:40.919
<v Speaker 3>spider itself. There are clear advantages. It provides food for

0:50:40.960 --> 0:50:44.280
<v Speaker 3>a carnivore. You can swoop in there and eat, eat

0:50:44.320 --> 0:50:46.480
<v Speaker 3>after the spider is done eating, or eat what the

0:50:46.480 --> 0:50:51.880
<v Speaker 3>spider has saved for later. It provides presumably protection against

0:50:51.920 --> 0:50:53.840
<v Speaker 3>other predators. You know, there are a lot of things

0:50:53.840 --> 0:50:55.920
<v Speaker 3>that might threaten you otherwise, but they're not going to

0:50:55.960 --> 0:50:59.760
<v Speaker 3>go messing around in a spider web. But there's a spider,

0:51:00.920 --> 0:51:06.560
<v Speaker 3>so it seems pretty clear that there is some part

0:51:06.800 --> 0:51:10.080
<v Speaker 3>of the silk case adaptation, you sticking all of the

0:51:10.160 --> 0:51:13.960
<v Speaker 3>dead insect body parts to the silk case that protects

0:51:14.000 --> 0:51:18.120
<v Speaker 3>the caterpillar against the host spider. But why does that work?

0:51:18.200 --> 0:51:21.920
<v Speaker 3>How does the dead body parts suit protect the caterpillar.

0:51:22.800 --> 0:51:25.799
<v Speaker 3>In one article I read, it cited the idea that

0:51:26.280 --> 0:51:30.719
<v Speaker 3>maybe it makes the caterpillar look like trash to the spider, like,

0:51:30.800 --> 0:51:32.799
<v Speaker 3>you know, it looks like this is the stuff I've

0:51:32.800 --> 0:51:35.200
<v Speaker 3>already gotten rid of and no longer have any use

0:51:35.280 --> 0:51:38.600
<v Speaker 3>for us. It's just not interesting to me. But I

0:51:38.760 --> 0:51:41.520
<v Speaker 3>do wonder kind of how that actually works in the

0:51:41.560 --> 0:51:44.400
<v Speaker 3>spider's brain. What does that look like to the spider?

0:51:44.440 --> 0:51:47.360
<v Speaker 3>What's going on there? And I wonder how it would

0:51:48.440 --> 0:51:52.399
<v Speaker 3>not be excited by, you know, the things that draw

0:51:52.440 --> 0:51:55.319
<v Speaker 3>it to prey that comes into its web in any

0:51:55.360 --> 0:51:58.960
<v Speaker 3>other case, like movement cues, vibrations in the web, or

0:51:59.000 --> 0:52:02.360
<v Speaker 3>smell cues or something like that. I don't know, but

0:52:03.360 --> 0:52:06.920
<v Speaker 3>it's super interesting that this animal can live in what

0:52:06.960 --> 0:52:11.000
<v Speaker 3>would seemingly be like the most hostile of possible spaces.

0:52:11.480 --> 0:52:15.560
<v Speaker 2>I'm imagining a terminator heads up display situation where it's

0:52:15.560 --> 0:52:17.640
<v Speaker 2>like looking at it and it just says trash, you know,

0:52:18.000 --> 0:52:22.480
<v Speaker 2>classification trash. But yeah, I mean it's so and it's

0:52:22.560 --> 0:52:26.560
<v Speaker 2>also just so interesting to try to imagine like the

0:52:27.120 --> 0:52:33.840
<v Speaker 2>presumably you know, gruesome and and doom ridden evolutionary journey

0:52:33.880 --> 0:52:37.640
<v Speaker 2>to this point. Yeah, where you know this is this

0:52:37.680 --> 0:52:41.040
<v Speaker 2>is a niche that had to be occupied over time,

0:52:41.680 --> 0:52:44.799
<v Speaker 2>and you can imagine a lot of mistakes were made

0:52:44.800 --> 0:52:45.399
<v Speaker 2>along the way.

0:52:45.840 --> 0:52:49.520
<v Speaker 3>Oh well, that brings up another interesting sort of phylogenetic connection,

0:52:49.640 --> 0:52:54.799
<v Speaker 3>which is that within this moth genus Hyposmocoma that you

0:52:54.920 --> 0:52:59.239
<v Speaker 3>find throughout Hawaii, there are many other different kinds of

0:52:59.560 --> 0:53:04.240
<v Speaker 3>unique cases. So the it's not just the bone collector.

0:53:04.400 --> 0:53:08.120
<v Speaker 3>There are relatives of this moth where the caterpillar phase

0:53:08.200 --> 0:53:11.240
<v Speaker 3>of the life cycle has the has these weird cases

0:53:11.280 --> 0:53:13.680
<v Speaker 3>it makes that are i think, in most cases thought

0:53:13.719 --> 0:53:16.080
<v Speaker 3>to help it blend in with the environment around it.

0:53:16.120 --> 0:53:18.800
<v Speaker 3>This is the only one that puts dead insect body

0:53:18.800 --> 0:53:21.279
<v Speaker 3>parts on itself and hides some spider's web. But there

0:53:21.320 --> 0:53:23.759
<v Speaker 3>are these others that make these cases that are said

0:53:23.760 --> 0:53:26.000
<v Speaker 3>to look like a crab. There's one that's called like

0:53:26.040 --> 0:53:29.279
<v Speaker 3>the candy wrapper caterpillar. It looks kind of like a

0:53:29.320 --> 0:53:32.040
<v Speaker 3>candy wrapper. There's one that looks like a cigar. There's

0:53:32.080 --> 0:53:34.160
<v Speaker 3>one that looks like I think they say it looks

0:53:34.200 --> 0:53:37.400
<v Speaker 3>like a burrito. So you get all these different shapes.

0:53:37.840 --> 0:53:40.600
<v Speaker 3>I think generally they're thought to just be types of

0:53:40.640 --> 0:53:44.640
<v Speaker 3>camouflage that help hide this from potential predators. But the

0:53:44.680 --> 0:53:48.680
<v Speaker 3>bone collector really stands out like it looks quite different

0:53:48.680 --> 0:53:50.920
<v Speaker 3>and much more striking than the other ones, which I

0:53:50.960 --> 0:53:54.920
<v Speaker 3>think are mostly trying to appear drab and blend in

0:53:55.000 --> 0:53:58.160
<v Speaker 3>with I don't know, an environment of leaves or sticks

0:53:58.280 --> 0:54:02.160
<v Speaker 3>or something. But anyway, coming back to the question, where

0:54:02.160 --> 0:54:05.719
<v Speaker 3>does the bone collector caterpillar fall on the you know,

0:54:05.840 --> 0:54:09.680
<v Speaker 3>Cave Hyena versus Texas chainsaw massacre at scale? Like, you know,

0:54:09.920 --> 0:54:13.680
<v Speaker 3>this seems to be much more intentional than the the

0:54:13.719 --> 0:54:17.239
<v Speaker 3>midden of bones that has formed chaotically just through you know,

0:54:17.280 --> 0:54:20.120
<v Speaker 3>you're eating nearby and that's where the bones get deposited.

0:54:21.000 --> 0:54:24.880
<v Speaker 2>Yeah, it's really kind of taking advantage of a mitten.

0:54:25.239 --> 0:54:30.040
<v Speaker 2>It's taking advantage of a a of an accumulation of

0:54:30.120 --> 0:54:33.760
<v Speaker 2>body parts or bones if you rather, and then using

0:54:33.800 --> 0:54:37.080
<v Speaker 2>it intentionally. It's like if you lived in the Texas

0:54:37.160 --> 0:54:39.239
<v Speaker 2>Chainsaw massacre house, but you were not a member of

0:54:39.280 --> 0:54:42.440
<v Speaker 2>the saw your clan, and you just covered yourself up

0:54:42.480 --> 0:54:44.760
<v Speaker 2>with bones just to blend in with all the bone

0:54:45.840 --> 0:54:47.760
<v Speaker 2>bone decorated furniture and so forth.

0:54:48.000 --> 0:54:50.279
<v Speaker 3>And you get to eat leather faces lunch when he's

0:54:50.280 --> 0:54:52.200
<v Speaker 3>not looking because you covered left.

0:54:52.080 --> 0:54:56.839
<v Speaker 2>Over barbecue left under slaw. You know, I was sure

0:54:56.840 --> 0:54:57.719
<v Speaker 2>I had some food.

0:54:57.520 --> 0:55:01.719
<v Speaker 3>On my plate. Well, off to the bone collectors. I

0:55:01.840 --> 0:55:04.759
<v Speaker 3>like your your style. Obviously the bone suit is cool,

0:55:04.800 --> 0:55:08.400
<v Speaker 3>but also it's just like bold behavior. You know, this

0:55:08.520 --> 0:55:13.400
<v Speaker 3>is a this is a boldness admired. I admire you

0:55:13.440 --> 0:55:13.920
<v Speaker 3>from afar.

0:55:14.160 --> 0:55:18.000
<v Speaker 2>I mean, it's it's a frequent story and evolution where

0:55:18.120 --> 0:55:20.920
<v Speaker 2>you know, not not to personify evolution too much, but

0:55:21.000 --> 0:55:24.280
<v Speaker 2>it is fun from time to time, and it's almost

0:55:24.360 --> 0:55:27.000
<v Speaker 2>like gain evolutions to Hey, you know, there's a good

0:55:27.040 --> 0:55:29.560
<v Speaker 2>living to be made living in a spider web if

0:55:29.560 --> 0:55:31.920
<v Speaker 2>you're not a spider in the same way that evolution

0:55:32.120 --> 0:55:35.880
<v Speaker 2>might whisper you know, Uh, there's a lot of riches

0:55:35.880 --> 0:55:38.200
<v Speaker 2>in a bee hive. You could get in there and

0:55:38.680 --> 0:55:41.040
<v Speaker 2>not alert the bees to your presence or make them

0:55:41.080 --> 0:55:43.719
<v Speaker 2>think that you belong there. Well, there's a lot of

0:55:43.719 --> 0:55:47.480
<v Speaker 2>honey in there, there's a lot of resources, and these

0:55:47.520 --> 0:55:50.600
<v Speaker 2>are all you know, these are all dangerous missions, dangerous hests.

0:55:51.239 --> 0:55:53.520
<v Speaker 2>But evolution is generally up for the job.

0:55:53.800 --> 0:55:57.280
<v Speaker 3>That's true. This is not the only infiltrator in nature. Yeah,

0:55:57.320 --> 0:56:01.319
<v Speaker 3>but maybe the most morbid looking one. Yeah, okay, Well

0:56:01.360 --> 0:56:02.640
<v Speaker 3>should we call part one there?

0:56:02.840 --> 0:56:05.440
<v Speaker 2>We should call part one, yes, but we will be back.

0:56:05.719 --> 0:56:08.200
<v Speaker 2>Let's see today's Thursday. We will be back on Tuesday

0:56:08.239 --> 0:56:10.719
<v Speaker 2>with a second part in which we'll look at some

0:56:10.800 --> 0:56:15.200
<v Speaker 2>other creatures that make use of the bones, be they

0:56:15.239 --> 0:56:19.400
<v Speaker 2>literal bones or some other parts of dead organisms. I

0:56:19.400 --> 0:56:22.279
<v Speaker 2>will have a few more examples to discuss in part two.

0:56:22.800 --> 0:56:25.040
<v Speaker 2>In the meantime, we'd love to hear from everyone out there,

0:56:25.280 --> 0:56:27.560
<v Speaker 2>you know about any of the organisms we talked about here,

0:56:27.680 --> 0:56:32.320
<v Speaker 2>or other examples from horror cinema, horror comics and so forth.

0:56:33.040 --> 0:56:35.480
<v Speaker 2>There's some other great examples, you know. Actually, I will

0:56:35.480 --> 0:56:37.279
<v Speaker 2>go ahead and mention one real quick that came up

0:56:37.320 --> 0:56:39.640
<v Speaker 2>in my research. This is not a movie that I

0:56:39.680 --> 0:56:42.799
<v Speaker 2>have seen, but there is a two thousand and three

0:56:42.800 --> 0:56:47.000
<v Speaker 2>British Canadian horror film titled The Bone Snatcher which apparently

0:56:47.040 --> 0:56:51.120
<v Speaker 2>does feature some sort of an insectoid creature that wears

0:56:51.160 --> 0:56:55.759
<v Speaker 2>the bones of its victims. So it's like covered in

0:56:55.800 --> 0:56:59.720
<v Speaker 2>bones or somehow partially armored in bones. I'm not sure,

0:56:59.760 --> 0:57:01.640
<v Speaker 2>but it is. It's kind of interesting. This would have

0:57:01.719 --> 0:57:04.480
<v Speaker 2>the two thousand and three and it does kind of

0:57:04.480 --> 0:57:06.480
<v Speaker 2>match up with what we were discussing here with the

0:57:06.480 --> 0:57:09.840
<v Speaker 2>bone collectorc caterpillar. I couldn't really find a good screen

0:57:09.920 --> 0:57:11.880
<v Speaker 2>cap of the monster though, so I don't really have

0:57:11.920 --> 0:57:12.799
<v Speaker 2>a great sense of it.

0:57:14.120 --> 0:57:16.560
<v Speaker 3>Well, I don't want to insult a movie without having

0:57:16.600 --> 0:57:19.080
<v Speaker 3>seen it, but it does have a real two thousand

0:57:19.120 --> 0:57:25.040
<v Speaker 3>and three kind of look. Yeah tagline it will scare

0:57:25.120 --> 0:57:26.760
<v Speaker 3>you out of your skull.

0:57:29.160 --> 0:57:30.200
<v Speaker 2>Maybe so, maybe so?

0:57:31.040 --> 0:57:32.400
<v Speaker 3>All right, next time.

0:57:33.000 --> 0:57:35.840
<v Speaker 2>All right. Just a reminder for everyone out there, This

0:57:35.880 --> 0:57:37.640
<v Speaker 2>Stuff to Blow Your Mind is primarily a science and

0:57:37.680 --> 0:57:40.360
<v Speaker 2>culture podcast, with core episodes on Tuesdays and Thursdays, short

0:57:40.400 --> 0:57:42.760
<v Speaker 2>form episodes on Wednesdays and on Fridays. We set aside

0:57:42.800 --> 0:57:44.760
<v Speaker 2>most serious concerns to just talk about a weird film

0:57:44.800 --> 0:57:46.080
<v Speaker 2>on Weird House Cinema.

0:57:46.320 --> 0:57:50.320
<v Speaker 3>Huge thanks as always to our excellent audio producer, JJ Posway,

0:57:50.360 --> 0:57:54.160
<v Speaker 3>and special thanks to our guest producer Today Andrew Howard.

0:57:54.240 --> 0:57:57.160
<v Speaker 3>Thank you so much Andrew for stepping in. If you

0:57:57.200 --> 0:57:59.800
<v Speaker 3>would like to get in touch with us with feedback

0:57:59.840 --> 0:58:02.640
<v Speaker 3>on this episode or any other, to suggest topic for

0:58:02.680 --> 0:58:05.200
<v Speaker 3>the future, or just to say hello, you can email

0:58:05.280 --> 0:58:15.360
<v Speaker 3>us at contact at stuff to Blow your Mind dot com.

0:58:15.400 --> 0:58:18.360
<v Speaker 1>Stuff to Blow Your Mind is production of iHeartRadio. For

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