Genetic inheritance and environment determine endocrine plasticity to urban living
Genetic inheritance and environment determine endocrine plasticity to urban living
复制标题
遗传和环境决定城市生活的内分泌可塑性
DOI：
10.1098/rspb.2019.1215
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Davies, Scott
中科院分区：
文献类型：
--
作者：
Ouyang, Jenny Q.;Baldan, Davide;Munguia, Crystal;Davies, Scott
随着城市地区在全球范围内继续扩张，了解物种如何以及为什么对新的栖息地做出反应变得越来越重要。了解观察到的城市动物表型变化背后的机制将使我们能够更好地评估城市化对当前和未来几代野生动物的影响。生理变化，如参与内分泌应激反应的变化，可能允许个人在城市化地区居住和茁壮成长，但目前尚不清楚这些变化是如何在自然种群中发生的。在这项研究中，我们对自由生活的家禽幼鸟进行了四向交叉寄养实验，以弄清城市和农村个体之间基线皮质酮的差异是否是发育过程中遗传和/或塑料机制的结果。我们发现，在孵化当天，城市雏鸡的皮质酮水平已经高于农村雏鸡，这表明皮质酮表型可能有遗传成分。然而，被转移到城市环境的农村后代显著增加了他们的皮质酮水平，与城市后代的水平相似。我们的发现表明，尽管城市和农村个体之间皮质酮基线浓度的差异可能有遗传因素，但可塑性起着关键作用，可以改变皮质酮的表型，以响应生命头两周所经历的环境。
As urban areas continue to expand globally, understanding how and why species respond to novel habitats becomes increasingly important. Knowledge of the mechanisms behind observed phenotypic changes in urban animals will enable us to better evaluate the impact of urbanization on current and future generations of wildlife. Physiological changes, such as those involved in the endocrine stress response, may allow individuals to inhabit and thrive in urbanized areas, but it is currently unknown how these changes arise in natural populations. In this study, we performed a four-way cross-foster experiment in free-living house wren chicks,Troglodytes aedon, to disentangle whether differences in baseline corticosterone between urban and rural individuals are a result of genetic and/or plastic mechanisms during development. We found that urban chicks already had higher corticosterone levels than their rural counterparts on the day they hatched, which suggests a possible genetic component to the corticosterone phenotype. However, rural offspring that were moved to an urban environment significantly increased their corticosterone levels, mimicking those of urban offspring. Our findings suggest that, although differences in baseline corticosterone concentrations between urban and rural individuals may have a genetic component, plasticity plays a pivotal role and can modify the corticosterone phenotype in response to the environment experienced in the first two weeks of life.
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影响因子：
3.3
作者：
Salmon, P.;Nilsson, J. F.;Isaksson, C.
通讯作者：
Isaksson, C.
影响因子：
2.1
作者：
Evans, MR;Roberts, ML;Goldsmith, AR
通讯作者：
Goldsmith, AR
影响因子：
3.3
作者：
Davies, Scott;Haddad, Nicole;Ouyang, Jenny Q.
通讯作者：
Ouyang, Jenny Q.
城市鸟类的繁殖物候：环境线索和机制
影响因子：
4.7
作者：
P. Deviche;S. Davies
通讯作者：
S. Davies
DOI：
--
发表时间：
2018
期刊：
Annual Review of Ecology, Evolution and Systematics
影响因子：
--
作者：
Emilie C. Snell‐Rood;M. E. Kobiela;Kristin L. Sikkink;A. M. Shephard
通讯作者：
A. M. Shephard