WEBVTT 00:00:00.000 --> 00:00:03.560 Okay, so picture this scenario. You are a brand 00:00:03.560 --> 00:00:07.540 new species. Right. You have just been discovered 00:00:07.540 --> 00:00:09.859 by science after millions of years of evolution. 00:00:10.160 --> 00:00:13.080 You've got your own specific habitat, your own 00:00:13.080 --> 00:00:15.880 unique physical traits, your own complex way 00:00:15.880 --> 00:00:17.600 of life. Basically, you're ready for your big 00:00:17.600 --> 00:00:20.539 debut. Exactly. You are ready for the scientific 00:00:20.539 --> 00:00:22.940 journals, that moment where you finally get a 00:00:22.940 --> 00:00:25.559 name that defines your existence. Yeah. And then 00:00:25.559 --> 00:00:28.780 they name you the neighbor. Yeah. It is definitely 00:00:28.780 --> 00:00:30.960 a bit of a letdown when you frame it like that. 00:00:31.019 --> 00:00:33.380 It feels less like a title and more like a reference 00:00:33.380 --> 00:00:35.579 point. A reference point. I mean, it feels like 00:00:35.579 --> 00:00:37.740 a clerical error. It is like having an identity 00:00:37.740 --> 00:00:39.920 crisis written directly into your birth certificate. 00:00:39.960 --> 00:00:42.719 Yeah. But that is exactly the creature we are 00:00:42.719 --> 00:00:44.960 digging into today. It really is a fascinating 00:00:44.960 --> 00:00:48.219 case study in taxonomy, actually. We are exploring 00:00:48.219 --> 00:00:51.420 the life and times of a frog that seems to have 00:00:51.420 --> 00:00:53.859 been defined entirely by who it stands next to, 00:00:53.960 --> 00:00:56.640 rather than who it actually is. We are talking 00:00:56.640 --> 00:00:59.140 about the Pepperana Atega. And you are right. 00:00:59.179 --> 00:01:01.740 The name suggests it's merely a sidekick, but 00:01:01.740 --> 00:01:04.519 the biological reality is, well, it's much more 00:01:04.519 --> 00:01:07.659 complex. And that is our mission for today's 00:01:07.659 --> 00:01:10.799 Deep Dives. We have a huge stack of sources here. 00:01:10.900 --> 00:01:12.959 We do. We've got the original descriptions from 00:01:12.959 --> 00:01:16.620 1999, detailed breakdowns of the species taxonomy, 00:01:16.819 --> 00:01:20.019 physical measurements, and conservation assessments. 00:01:20.200 --> 00:01:23.239 All the raw data. Right. And we want to move 00:01:23.239 --> 00:01:25.959 past that neighbor label and figure out what 00:01:25.959 --> 00:01:28.879 actually makes this frog tick. we're going to 00:01:28.879 --> 00:01:30.739 look at the specific engineering that allows 00:01:30.739 --> 00:01:34.500 it to survive in the wet, evergreen forests of 00:01:34.500 --> 00:01:36.659 Southeast Asia. And what we are going to find 00:01:36.659 --> 00:01:38.540 is that while the name points to similarity, 00:01:38.879 --> 00:01:41.760 the actual details point to a highly specialized 00:01:41.760 --> 00:01:44.400 survivor. The microscopic structures on the skin, 00:01:44.560 --> 00:01:47.359 the reproductive strategies. Exactly. This isn't 00:01:47.359 --> 00:01:49.459 just about a frog. It is about the detective 00:01:49.459 --> 00:01:51.519 work required to distinguish one species from 00:01:51.519 --> 00:01:54.299 another in a really crowded ecosystem. So let's 00:01:54.299 --> 00:01:55.819 get right into it. I want to start with the name 00:01:55.819 --> 00:01:59.200 game, because honestly, Paparana atiga sounds 00:01:59.200 --> 00:02:01.340 elegant until you translate it. It sounds like 00:02:01.340 --> 00:02:03.019 something you'd order at a high -end cafe. Right. 00:02:03.079 --> 00:02:05.400 The elegance tends to evaporate a bit in translation. 00:02:05.819 --> 00:02:08.639 I looked up the etymology in the notes. The specific 00:02:08.639 --> 00:02:12.719 epithet, atigua, comes from the Latin word atiguus. 00:02:12.879 --> 00:02:15.979 Which simply means neighboring or touching. So 00:02:15.979 --> 00:02:20.939 the neighbor frog, but neighbor to whom? Like, 00:02:20.939 --> 00:02:23.500 is this a geographic thing? Is it saying, I live 00:02:23.500 --> 00:02:26.469 next to Vietnam? Not! Exactly. In a biological 00:02:26.469 --> 00:02:30.050 sense, it is about morphological proximity. Meaning 00:02:30.050 --> 00:02:32.599 how it looks. Yes. The name was chosen because 00:02:32.599 --> 00:02:35.520 this frog is incredibly similar to another species 00:02:35.520 --> 00:02:38.800 called Indosilverana mileti. Okay. When the researchers, 00:02:39.039 --> 00:02:42.099 Inger, Orlov, and Derevsky described it back 00:02:42.099 --> 00:02:45.000 in 1999, the most striking feature was just how 00:02:45.000 --> 00:02:47.879 difficult it was to tell this frog apart from 00:02:47.879 --> 00:02:49.719 mileti. They are neighbors on the evolutionary 00:02:49.719 --> 00:02:53.020 tree. And neighbors in physical appearance. It 00:02:53.020 --> 00:02:54.919 feels a bit lazy, doesn't it? Like, here's a 00:02:54.919 --> 00:02:56.919 frog. It looks like that other frog. Let's call 00:02:56.919 --> 00:02:58.639 it the neighbor frog. You have to understand 00:02:58.639 --> 00:03:00.879 the context of taxonomy, though. When you are 00:03:00.879 --> 00:03:03.699 sifting through hundreds of specimens in a biodiversity 00:03:03.699 --> 00:03:06.560 hotspot, distinctness is the hardest thing to 00:03:06.560 --> 00:03:08.819 prove. I guess that makes sense. Naming it the 00:03:08.819 --> 00:03:11.159 neighbor is actually a nod to the challenge of 00:03:11.159 --> 00:03:14.460 identification. It signals to other hepatologists, 00:03:14.800 --> 00:03:17.840 warning, check your specimens carefully. This 00:03:17.840 --> 00:03:20.599 one looks like Mileti. Okay, so it is a warning 00:03:20.599 --> 00:03:23.340 label, but the sources also mention a common 00:03:23.340 --> 00:03:26.090 name. Usually common names are where we get a 00:03:26.090 --> 00:03:28.090 bit more creative. You have the fire -bellied 00:03:28.090 --> 00:03:30.069 toad, the poison dart frog, the goliath frog. 00:03:30.689 --> 00:03:34.270 But for Papyrana aetiga. The similar frog. The 00:03:34.270 --> 00:03:37.050 similar frog. That is brutal. It's defined purely 00:03:37.050 --> 00:03:41.289 by comparison. What is it? It is similar to what? 00:03:41.759 --> 00:03:43.819 You know, other frogs. It lacks poetic flair, 00:03:43.840 --> 00:03:45.780 I will grant you that. But again, similar frog 00:03:45.780 --> 00:03:48.180 is functional. It tells a field researcher immediately 00:03:48.180 --> 00:03:50.680 that they are dealing with a cryptic species 00:03:50.680 --> 00:03:53.240 complex. Cryptic species complex. Unpack that 00:03:53.240 --> 00:03:55.479 term for us. That sounds like spycraft. It refers 00:03:55.479 --> 00:03:58.020 to a group of species that are distinct explicitly 00:03:58.020 --> 00:04:00.039 in their genetics or reproductive boundaries, 00:04:00.259 --> 00:04:02.800 but look nearly identical to the human eye. Ah, 00:04:03.000 --> 00:04:05.800 I see. The similar frog is the poster child for 00:04:05.800 --> 00:04:08.240 this problem. And identity issues did not stop 00:04:08.240 --> 00:04:10.439 at the species name. If you look at the genus 00:04:10.439 --> 00:04:12.060 history and the records, this frog has moved 00:04:12.060 --> 00:04:14.500 around a lot. I saw that in the sources. It is 00:04:14.500 --> 00:04:16.240 like it has been in witness protection. Yeah, 00:04:16.259 --> 00:04:20.199 pretty much. It started as Rana Atiga, Hyla Rana, 00:04:20.279 --> 00:04:24.600 then Silverana, and now Paparana. Why can't scientists 00:04:24.600 --> 00:04:27.139 make up their minds? It is not about indecision. 00:04:27.199 --> 00:04:30.100 It is about resolution. Think of it like a digital 00:04:30.100 --> 00:04:34.240 photo. In 1999, our lens morphology or looking 00:04:34.240 --> 00:04:36.879 at the shape of the body was a bit low resolution. 00:04:37.279 --> 00:04:39.000 So we just lumped things together. Exactly. We 00:04:39.000 --> 00:04:41.860 dumped a lot of frogs into the genus Rana. It 00:04:41.860 --> 00:04:44.639 was what we call a wastebasket taxon. A wastebasket 00:04:44.639 --> 00:04:47.980 taxon. That sounds derogatory. It is just a practical 00:04:47.980 --> 00:04:50.860 term. Essentially, if it looked like a generic 00:04:50.860 --> 00:04:53.699 true frog, you know, smooth skin, jumps well, 00:04:53.779 --> 00:04:56.240 lives in water, it went into Rana. Because they 00:04:56.240 --> 00:04:58.240 belong to the family Rana day. Right. The true 00:04:58.240 --> 00:05:00.899 frogs. But as genetic sequence. became cheaper 00:05:00.899 --> 00:05:03.319 and more precise, we increased the resolution. 00:05:03.560 --> 00:05:05.439 We started seeing that these frogs were not actually 00:05:05.439 --> 00:05:07.959 close cousins. They just looked alike. Yes, due 00:05:07.959 --> 00:05:10.600 to convergent evolution. They are distant relatives. 00:05:10.959 --> 00:05:13.500 So moving it to papyrana isn't just a name change. 00:05:13.779 --> 00:05:16.759 It is redrawing the family tree to be accurate. 00:05:17.269 --> 00:05:20.449 Exactly. Placing it in papyrana tells us specifically 00:05:20.449 --> 00:05:22.689 about its lineage within that massive family. 00:05:23.069 --> 00:05:25.790 It distinguishes it from the European frogs or 00:05:25.790 --> 00:05:28.230 the American bullfrogs. It groups it with its 00:05:28.230 --> 00:05:30.550 actual genetic kin in the Australasian region. 00:05:30.970 --> 00:05:32.730 Okay, so we have established that our similar 00:05:32.730 --> 00:05:35.589 frog is a true frog with a complicated paperwork 00:05:35.589 --> 00:05:38.670 history. But let's ground this. If I want to 00:05:38.670 --> 00:05:41.970 see papyrana antigua in the flesh, or the granular 00:05:41.970 --> 00:05:44.730 skin, I suppose, where exactly am I going? You 00:05:44.730 --> 00:05:47.310 are booking a ticket to Southeast Asia. The range 00:05:47.310 --> 00:05:49.410 is actually quite specific. We are looking at 00:05:49.410 --> 00:05:51.750 central and southern Vietnam, eastern Cambodia, 00:05:52.029 --> 00:05:54.449 and extreme southern Laos. That is a very specific 00:05:54.449 --> 00:05:56.870 slice of the Indochina region. Are we talking 00:05:56.870 --> 00:05:59.490 lowlands, rice paddies? Not really. You are heading 00:05:59.490 --> 00:06:01.810 into the hills. The elevation data is interesting 00:06:01.810 --> 00:06:04.550 here. They are found from about 152 meters above 00:06:04.550 --> 00:06:07.550 sea level all the way up to 1280 meters. Wait, 00:06:07.569 --> 00:06:11.350 so roughly 500 feet to over 4 ,100 feet. That 00:06:11.350 --> 00:06:14.329 is a significant vertical range. It is. It spans 00:06:14.329 --> 00:06:16.550 from the foothills right up into the montane 00:06:16.550 --> 00:06:19.509 forests. That implies a good degree of thermal 00:06:19.509 --> 00:06:22.129 tolerance. The temperature at 4 ,000 feet is 00:06:22.129 --> 00:06:25.120 significantly different from 500 feet. It suggests 00:06:25.120 --> 00:06:27.939 this isn't a fragile flower of a frog that needs 00:06:27.939 --> 00:06:30.680 one specific temperature to survive. Precisely. 00:06:30.740 --> 00:06:33.379 And visually, what kind of landscape is this? 00:06:33.439 --> 00:06:36.720 The sources say wet, evergreen forests. Yes, 00:06:36.779 --> 00:06:40.839 dense, humid, broadleaf jungle. But you are not 00:06:40.839 --> 00:06:43.720 just wandering through the trees. To find Papyrana 00:06:43.720 --> 00:06:47.199 aetiga, you need to find moving water. The sources 00:06:47.199 --> 00:06:50.160 are very specific about this. They mention along 00:06:50.160 --> 00:06:53.279 streams with rapids and waterfalls. Yes. Rapids 00:06:53.279 --> 00:06:55.639 and waterfalls. Yes. That completely changes 00:06:55.639 --> 00:06:58.620 my mental image. I usually think of frogs sitting 00:06:58.620 --> 00:07:02.040 on lily pads in stagnant ponds. But this frog 00:07:02.040 --> 00:07:04.689 is dealing with high velocity water. It is a 00:07:04.689 --> 00:07:06.870 completely different hydrodynamic environment. 00:07:07.230 --> 00:07:09.689 Living near rapids means you are constantly dealing 00:07:09.689 --> 00:07:12.509 with spray, slippery rocks, and the threat of 00:07:12.509 --> 00:07:14.910 being washed away. Right. It requires a different 00:07:14.910 --> 00:07:17.089 set of physical tools than living in a pond. 00:07:17.310 --> 00:07:19.589 But the nodes also say they are found in mixed 00:07:19.589 --> 00:07:22.230 evergreen and deciduous forests containing bamboo. 00:07:22.490 --> 00:07:24.889 Which suggests they aren't strictly tied to the 00:07:24.889 --> 00:07:28.290 primary untouched rainforest. They can handle 00:07:28.290 --> 00:07:30.470 a mix of vegetation. That's good for survival, 00:07:30.509 --> 00:07:33.139 I imagine. Definitely. Bamboo forests have a 00:07:33.139 --> 00:07:35.379 different light cycle and humidity profile than 00:07:35.379 --> 00:07:38.300 dense evergreen canopies, so this frog isn't 00:07:38.300 --> 00:07:40.879 an ecological specialist that dies if the humidity 00:07:40.879 --> 00:07:43.980 drops by 1%. It is versatile. Okay, so we are 00:07:43.980 --> 00:07:46.879 hiking upstream in Vietnam. There is bamboo on 00:07:46.879 --> 00:07:50.000 the banks, waterfalls crashing nearby. We are 00:07:50.000 --> 00:07:52.759 looking for this similar frog. Since its name 00:07:52.759 --> 00:07:55.019 implies it looks like everything else, how do 00:07:55.019 --> 00:07:57.160 we actually spot it? What are the diagnostics? 00:07:57.240 --> 00:07:59.000 This is where we need to look closely because 00:07:59.000 --> 00:08:01.379 brown and stocky covers half the frogs in the 00:08:01.379 --> 00:08:03.759 forest. Let's look at the tail of the tape. The 00:08:03.759 --> 00:08:05.899 measurements. Let's hear them. Right. First off, 00:08:05.920 --> 00:08:08.120 if you see a really big one, it is probably a 00:08:08.120 --> 00:08:10.680 female. There is significant sexual dimorphism 00:08:10.680 --> 00:08:13.759 in size. How significant? Males are about 40 00:08:13.759 --> 00:08:16.879 to 45 millimeters, so roughly an inch and a half. 00:08:17.120 --> 00:08:20.439 Females are 55 to 65 millimeters. That is over 00:08:20.439 --> 00:08:22.819 two and a half. That is a huge difference. The 00:08:22.819 --> 00:08:25.579 female is basically 50 % larger than the male. 00:08:25.860 --> 00:08:29.160 Why the huge discrepancy? It is common in amphibians. 00:08:29.220 --> 00:08:30.920 It usually comes down to reproductive physics. 00:08:31.199 --> 00:08:34.139 A larger female can hold more eggs or larger 00:08:34.139 --> 00:08:35.879 eggs. Oh, that makes sense. In the evolutionary 00:08:35.879 --> 00:08:38.559 game, a bigger mother often yields a better return 00:08:38.559 --> 00:08:40.820 on investment for the next generation. She needs 00:08:40.820 --> 00:08:43.440 the body mass to support the clutch. So big moms, 00:08:43.500 --> 00:08:46.340 small dads? Generally. And the overall build 00:08:46.340 --> 00:08:49.759 is described as moderately stocky. It is not 00:08:49.759 --> 00:08:52.519 a spindly tree frog, but it is not a bloated 00:08:52.519 --> 00:08:55.580 toad either. It is athletic. What about the face? 00:08:55.639 --> 00:08:57.480 The sources had some specific details there. 00:08:57.580 --> 00:09:00.899 The head is longer than it is broad. The snout 00:09:00.899 --> 00:09:03.960 is described as obtusely pointed. Obtusely pointed. 00:09:04.240 --> 00:09:06.720 That sounds like a geometry oxymoron. It means 00:09:06.720 --> 00:09:09.080 it comes to a point, but the tip is rounded off. 00:09:09.200 --> 00:09:12.200 It is not a sharp needle nose. But the real tell, 00:09:12.440 --> 00:09:14.200 and this is a great field mark for you to listen 00:09:14.200 --> 00:09:17.529 for, is the ear. The tympanum? Yes, the circular 00:09:17.529 --> 00:09:19.909 membrane behind the eye. In Paparona aetiga, 00:09:20.110 --> 00:09:22.870 the tympanum is distinct. But here's the trick. 00:09:23.049 --> 00:09:25.750 It is relatively larger in males than in females. 00:09:25.950 --> 00:09:27.809 Wait, so the males are smaller overall but have 00:09:27.809 --> 00:09:30.870 bigger ears? Proportionally, yes. In many frog 00:09:30.870 --> 00:09:33.730 species, the tympanum size is linked to the male's 00:09:33.730 --> 00:09:36.509 need to hear calls or produce them. So if you 00:09:36.509 --> 00:09:39.210 hold a small frog with giant ears, it is likely 00:09:39.210 --> 00:09:42.409 a male. If it is a big, sturdy frog with smaller 00:09:42.409 --> 00:09:45.639 ears, it is a female. that is super useful now 00:09:45.639 --> 00:09:47.600 i want to talk about the skin because this is 00:09:47.600 --> 00:09:49.799 where the similar frog stops looking similar 00:09:49.799 --> 00:09:52.639 to me and starts looking like a punk rocker the 00:09:52.639 --> 00:09:55.360 description mentions tubercles with spinos tips 00:09:55.360 --> 00:09:59.539 yes this is a key texture detail the dorsal skin 00:09:59.539 --> 00:10:04.120 the back is granular it is bumpy But on the sides, 00:10:04.340 --> 00:10:07.320 the bumps get larger. And in many individuals, 00:10:07.620 --> 00:10:10.200 those bumps are tipped with white spinostructures. 00:10:10.399 --> 00:10:12.940 Spinos mean spiky, right? Essentially, tiny spines 00:10:12.940 --> 00:10:15.379 or stiff points. Why, though? Is it for defense? 00:10:15.399 --> 00:10:17.570 Like, don't eat me, I'm sharp. It is possible 00:10:17.570 --> 00:10:19.509 it makes them unpalatable, but more likely it 00:10:19.509 --> 00:10:21.690 serves two other functions. One is camouflage. 00:10:22.129 --> 00:10:24.350 A spiky texture breaks up the outline of the 00:10:24.350 --> 00:10:26.690 frog better than smooth skin. It makes them look 00:10:26.690 --> 00:10:29.750 like a piece of moss or rough bark. Since it 00:10:29.750 --> 00:10:32.090 is often more prominent in males of related species, 00:10:32.470 --> 00:10:35.240 it might play a role in mating. It could provide 00:10:35.240 --> 00:10:37.919 tactile feedback or even better grip on the female 00:10:37.919 --> 00:10:40.820 during amplexus. Amplexus being the mating embrace. 00:10:41.179 --> 00:10:43.759 Exactly. And that grip is especially important 00:10:43.759 --> 00:10:46.200 in a slippery environment like a waterfall. A 00:10:46.200 --> 00:10:50.559 spiky grip. Romantic. Nature is rarely romantic, 00:10:50.779 --> 00:10:53.539 but it is functional. And we should also mention 00:10:53.539 --> 00:10:56.360 the conspicuous, continuous dorsolateral folds. 00:10:56.639 --> 00:10:59.000 Those are the ridges running down the sides of 00:10:59.000 --> 00:11:01.509 the back. Okay, let's color this frog in. We 00:11:01.509 --> 00:11:04.370 have got the spikes and the ridges. What is the 00:11:04.370 --> 00:11:07.210 palette? It is cryptic coloration. The back is 00:11:07.210 --> 00:11:10.149 medium brown, sometimes with darker spots. This 00:11:10.149 --> 00:11:12.970 is standard issue forest floor camouflage. You 00:11:12.970 --> 00:11:15.210 need to blend in with dead leaves, mud, and wet 00:11:15.210 --> 00:11:17.590 rocks. But then there are the accessories. The 00:11:17.590 --> 00:11:20.730 notes mention a mask. A classic Zorro look. There 00:11:20.730 --> 00:11:23.509 is a dark brown or black narrow band that runs 00:11:23.509 --> 00:11:25.649 from the tip of the snout right through the eye 00:11:25.649 --> 00:11:28.169 and covers the tympanum. I feel like I see this 00:11:28.169 --> 00:11:30.029 on a lot of frogs. Is there a reason for the 00:11:30.029 --> 00:11:32.470 bandit mask? It is usually about disrupting the 00:11:32.470 --> 00:11:35.330 outline of the eye. The eye is a dead giveaway 00:11:35.330 --> 00:11:38.289 to predators. It is shiny, round, and obvious. 00:11:38.649 --> 00:11:41.649 A dark stripe hides the eye within a larger shape. 00:11:41.889 --> 00:11:45.470 It is visual stealth. But then, right below this 00:11:45.470 --> 00:11:47.710 stealth mask, they have what looks like bright 00:11:47.710 --> 00:11:50.250 lipstick. The upper lip stripe. It is white or 00:11:50.250 --> 00:11:52.889 yellow. It creates a high contrast line right 00:11:52.889 --> 00:11:56.269 along the jaw. So, brown body, white spikes. 00:11:57.019 --> 00:12:00.200 Black mask, white lip. That's actually a pretty 00:12:00.200 --> 00:12:02.059 striking combination if you get close enough. 00:12:02.240 --> 00:12:04.960 It is. And don't forget the legs. Dark brown 00:12:04.960 --> 00:12:07.860 crossbars on the limbs. This helps break up the 00:12:07.860 --> 00:12:09.720 shape of the leg so it doesn't look like a leg. 00:12:09.919 --> 00:12:11.639 Let's look at the feet. You mentioned they live 00:12:11.639 --> 00:12:13.980 in rapids. I assume they have massive webbed 00:12:13.980 --> 00:12:16.840 feet like flippers. You would think so, but the 00:12:16.840 --> 00:12:19.480 source specifically says partially webbed. Partially. 00:12:19.559 --> 00:12:22.340 That seems like a design flaw for a rapids dweller. 00:12:23.200 --> 00:12:25.620 If you are swimming in fast water don't you want 00:12:25.620 --> 00:12:29.059 maximum propulsion? Not necessarily. If you have 00:12:29.059 --> 00:12:31.740 full webbing, like a duck, you are great in open 00:12:31.740 --> 00:12:34.639 water but clumsy on land. Remember, these frogs 00:12:34.639 --> 00:12:37.000 are also on the banks, in the bamboo, climbing 00:12:37.000 --> 00:12:39.740 over wet rocks. They have discs on their fingers 00:12:39.740 --> 00:12:42.360 and toes, suction pads, basically. Ah, for the 00:12:42.360 --> 00:12:44.919 grip. The finger discs are small. The toe discs 00:12:44.919 --> 00:12:47.799 are slightly larger. Partially webbed is a compromise. 00:12:47.919 --> 00:12:50.500 It allows for swimming, but doesn't get in the 00:12:50.500 --> 00:12:52.620 way of climbing or hopping on the forest floor. 00:12:52.840 --> 00:12:55.899 It is an all -terrain configuration. So it isn't 00:12:55.899 --> 00:12:58.759 a boat. It is an ATV. Precisely. It balances 00:12:58.759 --> 00:13:00.980 the need to swim with the need to grip. We have 00:13:00.980 --> 00:13:03.289 a clear picture of the frog now. But I want to 00:13:03.289 --> 00:13:06.750 pivot to how it is doing in the wild. We are 00:13:06.750 --> 00:13:08.909 talking about Southeast Asia, a region that is 00:13:08.909 --> 00:13:11.950 developing rapidly. Is the similar frog in trouble? 00:13:12.110 --> 00:13:14.289 This is always the big question. According to 00:13:14.289 --> 00:13:17.110 the IUCN Red List, Paparana Atega is classified 00:13:17.110 --> 00:13:20.470 as least concern. Least concern. That sounds 00:13:20.470 --> 00:13:22.789 like we can stop worrying. We need to be careful 00:13:22.789 --> 00:13:25.889 with that term. Least concern is a statistical 00:13:25.889 --> 00:13:29.269 category. It means they are not currently meeting 00:13:29.269 --> 00:13:32.470 the threshold for threatened or endangered. It 00:13:32.470 --> 00:13:34.289 does not mean they are safe. It just means the 00:13:34.289 --> 00:13:37.110 population hasn't crashed yet. The notes do mention 00:13:37.110 --> 00:13:39.629 they can be common in parts of its range, and 00:13:39.629 --> 00:13:41.490 they are found in some protected areas. They 00:13:41.490 --> 00:13:44.350 can be common, yes. If you find the right stream, 00:13:44.590 --> 00:13:47.549 you might find a lot of them. But the sources 00:13:47.549 --> 00:13:50.580 are explicit about the threats. The primary enemy 00:13:50.580 --> 00:13:53.379 here is habitat loss. The forests are being cut 00:13:53.379 --> 00:13:56.940 down. Agriculture, logging, infrastructure, the 00:13:56.940 --> 00:13:59.500 usual pressures on the Annamite region. But there 00:13:59.500 --> 00:14:01.620 is a silver lining in the data. The fact that 00:14:01.620 --> 00:14:03.799 they are found in mixed forests and areas with 00:14:03.799 --> 00:14:06.600 bamboo suggests they are not hyperfragile. They 00:14:06.600 --> 00:14:08.940 have some resilience. They appear to tolerate 00:14:08.940 --> 00:14:11.720 a degree of habitat modification. Some frogs 00:14:11.720 --> 00:14:14.620 vanish if you cut a single tree. Paparona Atego 00:14:14.620 --> 00:14:16.759 seems to hang on as long as the streams are intact. 00:14:17.080 --> 00:14:19.600 Speaking of streams, there is a detail about 00:14:19.600 --> 00:14:22.179 reproduction that really confused me. We said 00:14:22.179 --> 00:14:24.659 they live in rapids, but the notes say reproduction 00:14:24.659 --> 00:14:27.740 is reported in standing water. Yes, this is a 00:14:27.740 --> 00:14:30.220 crucial strategy. Think about the physics of 00:14:30.220 --> 00:14:33.340 a tadpole. A tadpole is not a strong swimmer. 00:14:33.519 --> 00:14:36.820 If you lay your eggs in a raging waterfall, your 00:14:36.820 --> 00:14:39.299 offspring are going to end up five miles downstream 00:14:39.299 --> 00:14:41.980 or smashed against a rock. So the adults handle 00:14:41.980 --> 00:14:44.039 the rapids, but they put the kids in the kiddie 00:14:44.039 --> 00:14:47.139 pool. Exactly. They likely use side pools, rocky 00:14:47.139 --> 00:14:49.399 depressions, or slower moving sections of the 00:14:49.399 --> 00:14:52.460 stream to lay eggs. This separation of adult 00:14:52.460 --> 00:14:55.220 habitat and nursery habitat is a brilliant survival 00:14:55.220 --> 00:14:57.950 trait. It's the best of both worlds. Right. It 00:14:57.950 --> 00:15:00.509 allows the adults to exploit the resources near 00:15:00.509 --> 00:15:03.330 the fast water, where there might be fewer predators 00:15:03.330 --> 00:15:05.950 or more insects, while keeping the next generation 00:15:05.950 --> 00:15:08.730 safe in still water. It also might explain their 00:15:08.730 --> 00:15:11.490 resilience. If the mainstream flow changes or 00:15:11.490 --> 00:15:13.769 if the forest is thinned, as long as there are 00:15:13.769 --> 00:15:16.570 some stagnant pools for the tadpoles, the population 00:15:16.570 --> 00:15:19.289 can persist. It is a very flexible life history 00:15:19.289 --> 00:15:21.690 strategy, and it shows that even a similar frog 00:15:21.690 --> 00:15:23.990 has to be smart about where it raises its young. 00:15:24.570 --> 00:15:26.769 So when we step back and look at the whole picture, 00:15:26.889 --> 00:15:29.129 we have a frog that was dismissed as a neighbor, 00:15:29.289 --> 00:15:33.049 a similar frog. But in reality, it is a distinct 00:15:33.049 --> 00:15:35.750 evolutionary masterpiece. It really is. It has 00:15:35.750 --> 00:15:38.049 got the sexual dimorphism with the giant females. 00:15:38.389 --> 00:15:40.789 It has got the white spino spikes for texture. 00:15:41.149 --> 00:15:43.990 It has got the Zorro mask and the lipstick. It 00:15:43.990 --> 00:15:46.649 has engineered an ATD style foot for navigating 00:15:46.649 --> 00:15:49.830 slippery rocks near waterfalls. And it is smart 00:15:49.830 --> 00:15:52.470 enough. evolutionarily speaking, to keep its 00:15:52.470 --> 00:15:55.809 babies out of the rapids. It is a reminder that 00:15:55.809 --> 00:15:58.649 in biology, similarity is just a surface level 00:15:58.649 --> 00:16:01.450 illusion. When you drill down into the data, 00:16:01.549 --> 00:16:04.049 every species has solved the riddle of survival 00:16:04.049 --> 00:16:07.090 in its own unique way. I think that is the big 00:16:07.090 --> 00:16:09.389 takeaway for me. We rely so much on comparison. 00:16:09.610 --> 00:16:12.549 It looks like X. But Peperana Akiga isn't trying 00:16:12.549 --> 00:16:15.610 to be Indo -Silverana Mileti. It is just trying 00:16:15.610 --> 00:16:17.590 to survive in a Vietnamese stream. And it is 00:16:17.590 --> 00:16:19.409 doing a pretty good job of it. It makes you wonder 00:16:19.409 --> 00:16:21.669 about the other neighbors out there. How many 00:16:21.669 --> 00:16:24.009 species are hidden in plain sight, dismissed 00:16:24.009 --> 00:16:26.370 as just another brown frog or just another beetle, 00:16:26.490 --> 00:16:29.029 when they actually hold unique biological secrets? 00:16:29.289 --> 00:16:31.710 That is the driving force of modern taxonomy. 00:16:31.929 --> 00:16:34.049 We are constantly realizing that biodiversity 00:16:34.049 --> 00:16:36.470 is much richer than we thought. We just need 00:16:36.470 --> 00:16:38.529 to stop looking at the similarity and start looking 00:16:38.529 --> 00:16:40.769 at the details. The devil is in the details, 00:16:40.889 --> 00:16:43.269 and apparently so are the white spikes. Indeed. 00:16:44.009 --> 00:16:46.529 That is going to do it for this deep dive into 00:16:46.529 --> 00:16:49.889 the wet evergreen forests. We have unpacked the 00:16:49.889 --> 00:16:53.409 Paparana Atiga, the frog that overcame its identity 00:16:53.409 --> 00:16:56.429 crisis. A very worthy subject. Before we sign 00:16:56.429 --> 00:16:58.429 off, here's a final thought for you to chew on. 00:16:58.970 --> 00:17:01.830 We spent this whole time deconstructing the similar 00:17:01.830 --> 00:17:05.069 frog and proving how unique it is. But what about 00:17:05.069 --> 00:17:08.369 the neighbor? What about Indo -Silverana Meleti? 00:17:08.779 --> 00:17:11.000 That's a good question. We define it as the original 00:17:11.000 --> 00:17:14.779 and a Tiga as the copy. But are we missing something 00:17:14.779 --> 00:17:17.200 about Mileti because we just assume it is the 00:17:17.200 --> 00:17:20.019 standard? Does the neighbor definition actually 00:17:20.019 --> 00:17:22.940 hurt both species by locking them into a comparison 00:17:22.940 --> 00:17:26.200 instead of letting them stand alone? If you're 00:17:26.200 --> 00:17:28.220 focusing on what makes them the same, you might 00:17:28.220 --> 00:17:30.539 miss what makes them truly incredible. That is 00:17:30.539 --> 00:17:33.480 a dangerous rabbit hole to go down, but a fascinating 00:17:33.480 --> 00:17:35.380 one. That is why we leave it for the listener 00:17:35.380 --> 00:17:37.480 to explore. Thanks for diving in with us. Anytime. 00:17:37.839 --> 00:17:38.460 See you on the next one.