你知道鳖类胚胎的行为性体温调节吗？-龟友天下

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你知道鳖类胚胎的行为性体温调节吗？

2017-11-03 陆龟吧

Published online before print May 23, 2011 doi: 10.1073/pnas.1102965108 PNAS May 23, 2011

Behavioral thermoregulation by turtle embryos

Wei-Guo Dua,b,1, Bo Zhaob, Ye Chenb, and Richard Shinec

aKey Laboratory of Animal Ecology and Conservational Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China;
bHangzhou Key Laboratory of Animal Adaptation and Evolution, Hangzhou Normal University, Hangzhou 310036, China; and
cSchool of Biological Sciences A08, University of Sydney, Sydney, New South Wales 2006, Australia
1To whom correspondence should be addressed. E-mail: dwghz@126.com

Abstract

Mobile ectothermic animals can control their body temperatures by selecting specific thermal conditions in the environment, but embryos€€trapped within an immobile egg and lacking locomotor structures€€have been assumed to lack that ability. Falsifying that assumption, our experimental studies show that even early stage turtle embryos move within the egg to exploit small-scale spatial thermal heterogeneity. Behavioral thermoregulation is not restricted to posthatching life and instead may be an important tactic in every life-history stage.

图片 1

Fig. 1. Typical positions of embryonic Chinese soft-shelled turtle (P. sinensis) inside eggs that were exposed to heat sources from above (A) or at the left side (B).

外温动物可以在特殊的热条件环境中控制他们的体温，但对于胚胎来说，被困于蛋中，由于结构，而缺少运动，已经是被假设缺乏的能力。这样的假设，在我们实验研究中表明，即使早期的胚胎在蛋内利用异质性热量进行运动。行为性体温体温调节不只限于孵化后的生命，而是可能发生在每一个生命历史发展中的重要阶段过程。