Social competition, corticosterone and survival in female lizard morphs
Social competition, corticosterone and survival in female lizard morphs
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DOI：
10.1046/j.1420-9101.2003.00598.x
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发表时间：
2003-09-01
影响因子：
2.1
通讯作者：
Wingfield, J
中科院分区：
文献类型：
--
作者：
Comendant, T;Sinervo, B;Wingfield, J
我们研究了选择性的后果，在行为和内分泌生理学的变化，在两个女性的喉咙颜色变种的蜥蜴，乌塔stansburiana在野外。女性变体不同的家庭范围分布模式和皮质酮水平的密度和频率的女性邻居。血浆皮质酮水平的黄喉女性增加密度的两种变体。相反，橙色喉咙的女性皮质酮水平降低，以响应橙子女性密度的增加。此外，女性与较低的皮质酮存活不佳，这表明社会交往和高密度的橙子女性可能是潜在的成本为橙子女性。这些结果与先前报道的被更多橙子邻居包围的橙子雌性变体的健身效果降低和免疫功能抑制一致。这些相关性，结合以前的工作在这个系统中，表明皮质酮可能是一个重要的生理机制，调节女性健身的性质。
We examined the selective consequences of variation in behaviour and endocrine physiology in two female throat-colour morphs of the lizard, Uta stansburiana in the wild. Female morphs differed in home-range distribution patterns and corticosterone levels in relation to the density and frequency of their female neighbours. Levels of plasma corticosterone of yellow-throated females increased with increased density of both morphs. in contrast, orange-throated females had reduced levels of corticosterone in response to increased density of orange females. Additionally, females with lower corticosterone survived poorly, suggesting that social interactions and high local densities of orange females may be potentially costly for orange females. These results are consistent with decreased fitness effects and suppression of immune function previously reported for orange female morphs surrounded by more orange neighbours. These correlations, in conjunction with previous work in this system, indicate that corticosterone is likely to be an important physiological mechanism regulating female fitness in nature.