Thursday, 1 March 2018

Playing both ends: Amphibian adapted to varied evolutionary pressures


Date:  February 23, 2018
Source:  Utah State University

Summary:
Caecilian, Siphonops annulatus, a limbless amphibian found throughout Brazil, has a concentration of enlarged mucous glands in its head region and a concentration of enlarged poison glands in its posterior region. These concentration appear to have evolved from different selective pressures: the ability to tunnel into the ground and to defend oneself from predators.

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