GrrlScientist is a female evolutionary biologist, ornithologist, aviculturist and writer. A native of the Pacific Northwest, she relocated from Seattle to NYC with her parrots after earning her PhD. In NYC, she was a postdoctoral fellow for two years, reconstructing a molecular phylogeny of the parrots of the South Pacific islands. GrrlScientist has written a science blog since 4 August 2004 (the early years are archived 
tags: caecilian, amphibian, parental care, flesh-eating amphibians, behavior, evolution, streaming video
The Purple Caecilian, Gymnopis multiplicata,
is native to Costa Rica, South America.
Image: WildHerps.com
What is that peculiar creature in the above image? Did you guess that it is a worm? Many people do, never realizing that there are strange subterranean vertebrates that resemble worms, but are actually amphibians. So far, only 114 species of these creatures, known as caecilians [seh SEE lee ans], have been identified, but because they rarely come to the surface of the earth, the lives, habits, populations and precise species numbers remain mysterious to this very day.
BBC photographers working on a new program, Life in Cold Blood, were filming a female caecilian with her offspring. They document that, besides protecting their offspring, the female allows her young to feed off her body, by peeling her skin off and eating it.
Interestingly, young caecilians have evolved specialized teeth for tearing and removing their mother's skin.
To capture this never-before-filmed behavior, the camera crew constructed a set that resembles the shallow, humid underground chambers that caecilians typically occupy. Nevertheless, the crew experienced difficulties in filming this behavior because young caecilians only ate their mother's special nutrient-rich skin once every three days, and the entire event only lasted approximately ten minutes in total. [streaming: 2:07]. Below is a YouTube video, although not as good as the BBC video [0:33];
Caecilians, like all amphibians, have moist and soft skin. They also have two sets of teeth that they use to catch their prey (worms) and to burrow through the soil. As you saw in the linked video, caecilians have tiny eyes, and further, their eyesight is poor.
Caecilians are subterranean animals that can dig burrows that are as deep as five feet. They are found in the tropics, and the adults live solitary lives, except during breeding season. How males and females locate each other is currently unclear.
Source
BBCNews (story, film)
Comments
Dare I say it - go and here for a lot more on the same.
Posted by: Darren Naish | February 10, 2008 4:34 PM
I'm glad I'm not the only one to make a post on that. I'm also glad I'm not the only one to be unable to directly post the video because of the BBC's refusal to allow people to copy their videos... Something that many Brits (of which I am not one) complain as they're taxpayer supported.
Anyway, it's pretty cool. I recommend watching it, wholeheartedly.
Posted by: Moses | February 10, 2008 4:41 PM
why didn't you take screen shots of the video to describe to us on our blog? I don't have mediarealplayer, that's why it would have convenient to me. Plus, you wouldn't have to depend on the video as much in your post.
please take screen shots of the flesh eating.
Posted by: the_Astrocreep | February 10, 2008 9:50 PM
i tried to take screen shots but they didn't turn out. i went back and found a YouTube video of baby caecilians feeding, but it isn't very good, unfortunately. but this is the best i could do.
Posted by: "GrrlScientist" | February 10, 2008 11:39 PM
Darren Naish also mentioned this in a post earlier this year,
http://richarddawkins.net/forum/memberlist.php?mode=viewprofile&u=9333
You have to scroll down to the part headed "Viviparity, dermatotrophy and matrotrophy" for the part about skin eating.
By the way, am I the only person in Britain to think the BBC is actually underfunded?
Posted by: Horwood Beer-Master | February 11, 2008 7:59 AM
oops, I'm an idiot. In think in my last post I may have accidentally posted the URL of my richarddawkins.net viewer profile (which I tend to put as my URL when posting comments) instead of the article by Darren Naish which I was referring to.
I probably shouldn't post things before my morning mug of tea in future.
The correct link is here http://scienceblogs.com/tetrapodzoology/2008/01/surreal_caecilians_part_ii.php
Grrl, could you edit my first post so it doesn't look like I made that mistake? Please?
Posted by: Horwood Beer-Master | February 11, 2008 8:35 AM
I was bitten by a frog once.
Thats what happens when you try to teach an animal with poor eyesight to take food from your hand.
Posted by: Rob Jase | February 11, 2008 12:57 PM
I wonder about the real human Cecilia who inspired the name.
Posted by: paul | February 11, 2008 3:59 PM
No, no, both come independently from Latin caecus "blind".
More on caecilians can be found in the archives of last month at Tetrapod Zoology.
Posted by: David Marjanović | February 11, 2008 5:37 PM