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These Frogs Hide Thanks to Transparent Skin
YouTube: | https://youtube.com/watch?v=N3MxUFwJPZ4 |
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View count: | 110,501 |
Likes: | 6,548 |
Comments: | 178 |
Duration: | 03:05 |
Uploaded: | 2021-01-02 |
Last sync: | 2024-12-01 15:30 |
Citation
Citation formatting is not guaranteed to be accurate. | |
MLA Full: | "These Frogs Hide Thanks to Transparent Skin." YouTube, uploaded by SciShow, 2 January 2021, www.youtube.com/watch?v=N3MxUFwJPZ4. |
MLA Inline: | (SciShow, 2021) |
APA Full: | SciShow. (2021, January 2). These Frogs Hide Thanks to Transparent Skin [Video]. YouTube. https://youtube.com/watch?v=N3MxUFwJPZ4 |
APA Inline: | (SciShow, 2021) |
Chicago Full: |
SciShow, "These Frogs Hide Thanks to Transparent Skin.", January 2, 2021, YouTube, 03:05, https://youtube.com/watch?v=N3MxUFwJPZ4. |
Hanging out in the trees of Central and South America are some frogs with pretty unusual coloration. Which is to say, parts of them have no color at all. Their bellies are completely see-through!
Hosted by: Stefan Chin
SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org
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Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
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Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:
Marwan Hassoun, Jb Taishoff, Bd_Tmprd, Harrison Mills, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Sam Buck, Christopher R Boucher, Eric Jensen, Lehel Kovacs, Adam Brainard, Greg, Ash, Sam Lutfi, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, charles george, Alex Hackman, Chris Peters, Kevin Bealer
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Looking for SciShow elsewhere on the internet?
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Sources:
https://kuscholarworks.ku.edu/bitstream/handle/1808/13694/Trueb_et_al_2009.pdf?sequence=1&isAllowed=y
https://www.researchgate.net/publication/232701398_Revision_of_the_characters_of_Centrolenidae_Amphibia_Anura_Athesphatanura_with_comments_on_its_taxonomy_and_the_description_of_new_taxa_of_glassfrogs [PDF]
https://www.pnas.org/content/117/23/12885
https://www.smithsonianmag.com/smart-news/scientists-discover-reason-behind-glass-frogs-translucent-skin-180974979
https://www.researchgate.net/publication/22295078_Infrared_reflectance_in_leaf_sitting_Neotropical_frogs [PDF]
Images:
https://www.istockphoto.com/photo/glass-frog-gm108314019-12391329
https://www.storyblocks.com/video/stock/glass-frog-hyalinobatrachium-sp-e5_vtj5igil4gm942
https://www.storyblocks.com/video/stock/glass-frog-hyalinobatrachium-sp-4iw-m_jseil64030w
https://www.istockphoto.com/photo/the-yellow-flecked-glass-frog-cochranella-albomaculata-a-bright-green-tree-frog-with-gm1281518091-379535277
https://www.istockphoto.com/photo/glass-frog-cochranella-granulosa-from-panama-gm1190223117-337323139
https://www.istockphoto.com/photo/glass-frog-gm118081891-9290005
https://www.istockphoto.com/photo/closeup-nature-view-of-green-leaf-background-gm1208290498-349186791
https://www.istockphoto.com/photo/close-up-of-a-red-tailed-hawk-buteo-jamaicensis-gm157613274-13139892
https://www.istockphoto.com/photo/reticulated-glass-frog-with-eggs-selva-verde-costa-rica-gm1087251912-291701914
https://www.istockphoto.com/photo/fleischmanns-glass-frog-backlit-on-leaf-la-fortuna-costa-rica-gm916811130-252258715
https://www.istockphoto.com/photo/layers-of-leaves-with-a-tree-frog-silhouette-gm155350410-19113682
https://www.istockphoto.com/vector/summer-season-exotic-leaves-vector-collection-isolated-on-transparent-gm1156126477-314989631
https://www.istockphoto.com/vector/paper-art-of-tropical-leaf-on-black-gm1184781852-333642636
https://www.istockphoto.com/vector/frog-jumping-isolated-frog-jumping-on-white-background-gm1188043399-335848055
https://www.istockphoto.com/photo/wild-common-buzzard-in-flight-catching-with-claws-isolated-on-white-background-gm1194687298-340277836
https://www.istockphoto.com/photo/carpet-chameleon-in-mantadia-national-park-gm498559370-79724715
https://www.istockphoto.com/photo/glasswing-butterfly-on-a-green-leaf-gm1189895811-337078037
Hosted by: Stefan Chin
SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org
----------
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:
Marwan Hassoun, Jb Taishoff, Bd_Tmprd, Harrison Mills, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Sam Buck, Christopher R Boucher, Eric Jensen, Lehel Kovacs, Adam Brainard, Greg, Ash, Sam Lutfi, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, charles george, Alex Hackman, Chris Peters, Kevin Bealer
----------
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow
----------
Sources:
https://kuscholarworks.ku.edu/bitstream/handle/1808/13694/Trueb_et_al_2009.pdf?sequence=1&isAllowed=y
https://www.researchgate.net/publication/232701398_Revision_of_the_characters_of_Centrolenidae_Amphibia_Anura_Athesphatanura_with_comments_on_its_taxonomy_and_the_description_of_new_taxa_of_glassfrogs [PDF]
https://www.pnas.org/content/117/23/12885
https://www.smithsonianmag.com/smart-news/scientists-discover-reason-behind-glass-frogs-translucent-skin-180974979
https://www.researchgate.net/publication/22295078_Infrared_reflectance_in_leaf_sitting_Neotropical_frogs [PDF]
Images:
https://www.istockphoto.com/photo/glass-frog-gm108314019-12391329
https://www.storyblocks.com/video/stock/glass-frog-hyalinobatrachium-sp-e5_vtj5igil4gm942
https://www.storyblocks.com/video/stock/glass-frog-hyalinobatrachium-sp-4iw-m_jseil64030w
https://www.istockphoto.com/photo/the-yellow-flecked-glass-frog-cochranella-albomaculata-a-bright-green-tree-frog-with-gm1281518091-379535277
https://www.istockphoto.com/photo/glass-frog-cochranella-granulosa-from-panama-gm1190223117-337323139
https://www.istockphoto.com/photo/glass-frog-gm118081891-9290005
https://www.istockphoto.com/photo/closeup-nature-view-of-green-leaf-background-gm1208290498-349186791
https://www.istockphoto.com/photo/close-up-of-a-red-tailed-hawk-buteo-jamaicensis-gm157613274-13139892
https://www.istockphoto.com/photo/reticulated-glass-frog-with-eggs-selva-verde-costa-rica-gm1087251912-291701914
https://www.istockphoto.com/photo/fleischmanns-glass-frog-backlit-on-leaf-la-fortuna-costa-rica-gm916811130-252258715
https://www.istockphoto.com/photo/layers-of-leaves-with-a-tree-frog-silhouette-gm155350410-19113682
https://www.istockphoto.com/vector/summer-season-exotic-leaves-vector-collection-isolated-on-transparent-gm1156126477-314989631
https://www.istockphoto.com/vector/paper-art-of-tropical-leaf-on-black-gm1184781852-333642636
https://www.istockphoto.com/vector/frog-jumping-isolated-frog-jumping-on-white-background-gm1188043399-335848055
https://www.istockphoto.com/photo/wild-common-buzzard-in-flight-catching-with-claws-isolated-on-white-background-gm1194687298-340277836
https://www.istockphoto.com/photo/carpet-chameleon-in-mantadia-national-park-gm498559370-79724715
https://www.istockphoto.com/photo/glasswing-butterfly-on-a-green-leaf-gm1189895811-337078037
[♩INTRO].
Hanging out in the trees of Central and South America are some frogs with pretty unusual coloration. Which is to say, parts of them have no color at all.
Their bellies are completely see-through thanks to a combination of thin skin and a total lack of pigment-bearing cells. You can see everything! From their guts, to their beating hearts.
These frogs are known as glass frogs. And even though their bare-all bellies look like the perfect buffet preview for predators, their translucency may actually be an interesting form of camouflage. There are about 150 species of glass frogs in the family Centrolenidae. All of them lack pigment on their bellies, and about a quarter of them are properly see-through.
Their backs are a more familiar hue -- green. That green color helps them blend into their leafy background so they’re less easily spotted by hungry birds or other predators. The green in some species even reflects infrared light which might mess with the senses of some birds and snakes.
But there also seems to be a purpose to the clear bits. That’s according to a 2020 paper published in the journal PNAS. Researchers took photos of the frogs on leaves or white backgrounds and then analyzed their color based on what they’d look like in the eyes of birds, snakes, mammals or humans.
They saw that the perceived brightness of a frog’s green back changes depending on how much light bounces off the leaf the frog is sitting on. The leaf color essentially shines through the frog’s translucent underside helping them blend in. And because some of the translucent parts are visible from above, it literally blends their edges into the background making it tricky for a predator to see a nice, clear, froggy outline.
It’s like the frogs are using the blend and blur tools in Photoshop. The researchers dubbed this camouflage technique edge diffusion. And in their study, the froggy camouflage seemed to fool both people and wild animals.
The researchers created a Where’s Waldo-style experiment where they randomly hid images of frogs with different patterns and degrees of see-throughness on a leafy background. And it took people longer to find frogs that looked most like the real life ones, with translucent legs and opaque bodies, than fully opaque frogs. Then, because you can’t ask animals to look at a picture book, the scientists also made frogs out of gelatin that were either opaque or see-through.
And they plonked them on leaves in the frogs’ natural habitat to see which ones would be picked off by predators the quickest. And the opaque frogs became gummy snacks quicker and more often than the clear ones. Scientists have thought for a while that these bare bellies might help the frogs camouflage themselves, but this is the first study to actually show how it works.
And this blending strategy actually seems to be pretty different than other forms of camouflage, like changing color or being totally see-through. So it just shows you how many ways life has learned to use color and light to its advantage, even when it means putting everything on display! Thank you for watching this episode of SciShow, which in the interests of transparency we have to tell you was supported by our patrons.
Patrons get access to fun perks, like bloopers and fancy facts, as thanks for helping us make videos. If you’d like to get involved, check out patreon.com/scishow. [♩OUTRO].
Hanging out in the trees of Central and South America are some frogs with pretty unusual coloration. Which is to say, parts of them have no color at all.
Their bellies are completely see-through thanks to a combination of thin skin and a total lack of pigment-bearing cells. You can see everything! From their guts, to their beating hearts.
These frogs are known as glass frogs. And even though their bare-all bellies look like the perfect buffet preview for predators, their translucency may actually be an interesting form of camouflage. There are about 150 species of glass frogs in the family Centrolenidae. All of them lack pigment on their bellies, and about a quarter of them are properly see-through.
Their backs are a more familiar hue -- green. That green color helps them blend into their leafy background so they’re less easily spotted by hungry birds or other predators. The green in some species even reflects infrared light which might mess with the senses of some birds and snakes.
But there also seems to be a purpose to the clear bits. That’s according to a 2020 paper published in the journal PNAS. Researchers took photos of the frogs on leaves or white backgrounds and then analyzed their color based on what they’d look like in the eyes of birds, snakes, mammals or humans.
They saw that the perceived brightness of a frog’s green back changes depending on how much light bounces off the leaf the frog is sitting on. The leaf color essentially shines through the frog’s translucent underside helping them blend in. And because some of the translucent parts are visible from above, it literally blends their edges into the background making it tricky for a predator to see a nice, clear, froggy outline.
It’s like the frogs are using the blend and blur tools in Photoshop. The researchers dubbed this camouflage technique edge diffusion. And in their study, the froggy camouflage seemed to fool both people and wild animals.
The researchers created a Where’s Waldo-style experiment where they randomly hid images of frogs with different patterns and degrees of see-throughness on a leafy background. And it took people longer to find frogs that looked most like the real life ones, with translucent legs and opaque bodies, than fully opaque frogs. Then, because you can’t ask animals to look at a picture book, the scientists also made frogs out of gelatin that were either opaque or see-through.
And they plonked them on leaves in the frogs’ natural habitat to see which ones would be picked off by predators the quickest. And the opaque frogs became gummy snacks quicker and more often than the clear ones. Scientists have thought for a while that these bare bellies might help the frogs camouflage themselves, but this is the first study to actually show how it works.
And this blending strategy actually seems to be pretty different than other forms of camouflage, like changing color or being totally see-through. So it just shows you how many ways life has learned to use color and light to its advantage, even when it means putting everything on display! Thank you for watching this episode of SciShow, which in the interests of transparency we have to tell you was supported by our patrons.
Patrons get access to fun perks, like bloopers and fancy facts, as thanks for helping us make videos. If you’d like to get involved, check out patreon.com/scishow. [♩OUTRO].