Drooling on the Pillow

Tuesday, March 22, 2005

It's Clobberin' Time! 

From the Times' Science section. No link.
Nobody likes overcrowding, but the Japanese salamander
Hynobius retardatus has an unusual way of dealing with it.
During is larval stage, if its corner of the pond is chockablock
with fellow salamander larvae or tadpoles, H. retardatus can
develop a broader head, the better to eat them.
The change is prompted not by chemical signals, but by the flapping tails of tadpoles.
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