Parasites, mate attractiveness and female feather corticosterone levels in a socially monogamous bird
Parasites, mate attractiveness and female feather corticosterone levels in a socially monogamous bird
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社会一夫一妻制鸟类的寄生虫、配偶吸引力和雌性羽毛皮质酮水平
DOI：
10.1007/s00265-015-2048-0
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发表时间：
2015
影响因子：
2.3
通讯作者：
Mougeot F
中科院分区：
文献类型：
--
作者：
Mougeot F
压力在动物的生活中无处不在，也是它们幸福和健康的关键决定因素。通过量化生长羽毛中的羽毛皮质酮水平(CORTf)，我们测量了一夫一妻制猎鸟--红色松鸡的综合应激反应。我们调查了寄生虫和社会伴侣选择对配对过程中雌性CORTF水平的影响，并检验了这样的假设，即寄生虫较多的雌性和长相较差的雄性配对的CORTF更高。我们在实验中降低了雌性配对期间线虫寄生虫的数量，并调查了治疗对CORTF的影响，同时也考虑了社会伴侣的表型(雄性梳子大小，作为性吸引力的代用品)。这种处理在对照和剂量组雌蜂之间的寄生虫负荷对比中是有效的，但对CORTF没有明显影响。在实验女性中，一个月后的再感染率与CORTF呈正相关。我们没有发现根据大小、条件或装饰大小进行分类交配的证据，但雌性与更有吸引力的雄性配对(显示出更大的梳子)在配对过程中CORTF较低。在所有男性吸引力水平上，寄生虫负荷量减少的雌性比对照雌性的CORTF更低。因此，社会伴侣的选择似乎是女性综合应激反应的一个重要决定因素，这可能反过来调节再感染率和寄生虫风险。男性吸引力对女性压力的影响可能是一种适应性反应的一部分，允许女性根据自己获得的社会伴侣选择来调整生殖投资。
Stress is ubiquitous in the life of animals and a key determinant of their well-being and fitness. By quantifying levels of feather corticosterone in growing feathers (CORTf), we measured integrated stress responses in a monogamous game bird, the red grouseLagopus lagopus scoticus. We investigated the effects of parasites and social mate choice on female CORTf levels during pairing, and tested the hypothesis that females with more parasites and paired with less attractive males have higher CORTf. We experimentally reduced nematode parasite abundance during pairing in females and investigated the effect of treatment on CORTf, while also considering the social mate’s phenotype (male comb size, as a proxy of sexual attractiveness). The treatment was effective at contrasting parasite loads between control and dosed females, but had no apparent effect on CORTf. In experimental females, reinfection rate after a month positively correlated with CORTf. We found no evidence of assortative mating based on size, condition or ornament size, but females paired with more attractive males (displaying bigger combs) had lower CORTf during pairing. Females for which parasite load was reduced had lower CORTf than control females at all levels of male attractiveness. Social mate choice therefore appears to be an important determinant of female integrated stress responses, which may in turn modulate reinfection rate and parasitism risk. An influence of male attractiveness on female stress may be part of an adaptive response allowing females to adjust reproductive investment to their achieved social mate choice.
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影响因子：
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作者：
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DOI：
--
发表时间：
2013
期刊：
影响因子：
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作者：
M. Carrete;G. Bortolotti;J. Sánchez‐Zapata;A. Delgado;A. Cortés;J. Grande;J. Donázar
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作者：
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