Early developmental conditions affect stress response in juvenile but not in adult house sparrows (Passer domesticus)
Early developmental conditions affect stress response in juvenile but not in adult house sparrows (Passer domesticus)
复制标题
DOI：
10.1016/j.ygcen.2008.10.004
复制
发表时间：
2009-01-01
影响因子：
2.7
通讯作者：
Chastel, Olivier
中科院分区：
文献类型：
--
作者：
Lendvai, Adam Z.;Loiseau, Claire;Chastel, Olivier
发育条件对健康的短期和长期影响越来越受到关注，因为生命早期的环境条件可能会影响生长、独立条件、招募、生殖成功或生存。我们在这里测试，在一个自然的家雀种群，如果在雏鸟阶段的早期条件影响鸟类的应激反应（一）后不久，羽翼丰满，（二）明年，在他们的第一次繁殖。我们实验性地操纵育雏大小以模拟不同的饲养条件，产生减少的（-2只小鸡）和扩大的育雏（+2只小鸡），而在第三组中，育雏大小未被操纵。雏鸟的营养状态下降后操纵育雏的大小所示的较低的体重。10日龄时体重较高的雏鸟比同龄时较瘦的雏鸟表现出较低的应激反应。在大窝饲养的雏鸟表现出更高的反应比小鸡从小窝的压力协议，这种效果是在显着的相互作用与捕获雏鸟的年龄。这种相互作用表明，育雏大小的影响逐渐变小，随着雏鸟年龄的增长，远离他们的雏鸟期。早期条件的影响在第二年消失了：成年第一次繁殖的压力反应与它们的育雏大小无关。这些结果表明，压力反应可能反映了一个人的实际状态，而不是其发展历史。(C)2008年爱思唯尔公司All rights reserved.
The short- and long-term consequences of developmental conditions on fitness have received growing attention because the environmental conditions during early life may influence growth, condition at independence, recruitment, reproductive success or survival. We tested here, in a natural house sparrow population, if early conditions during nestling stage affected the stress response of the birds (i) shortly after fledging and (ii) next year, during their first breeding. We experimentally manipulated brood size to mimic different rearing conditions, creating reduced (-2 chicks) and enlarged broods (+2 chicks), while in a third group brood size was not manipulated. Nestling nutrition state decreased with post-manipulation brood sizes as indicated by lower body mass. Fledglings with higher body mass at the age of ten days showed lower stress response than birds that were leaner at the same age. Fledglings reared in large broods showed a higher response to stress protocol than chicks from small broods, and this effect was in significant interaction with the age of fledglings at capture. This interaction indicates that the effects of the brood size became gradually smaller as the fledglings grew older and were further from their nestling period. The effects of early conditions vanished by the next year: the stress response of adult first time breeders was unrelated to the brood size they fledged from. These results suggest that stress response may reflect the actual state of an individual, rather than its developmental history. (C) 2008 Elsevier Inc. All rights reserved.