Reproductive advantage of multiple female ornaments in the Asian Barn Swallow Hirundo rustica gutturalis.
Reproductive advantage of multiple female ornaments in the Asian Barn Swallow Hirundo rustica gutturalis.
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亚洲家燕 Hirundo rustica gutturalis 多个雌性饰物的生殖优势。
DOI：
10.1007/s10336-016-1401-z
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发表时间：
2017
影响因子：
1.3
通讯作者：
M.
中科院分区：
文献类型：
--
作者：
Hasegawa;M.;Arai;E.;Watanabe;M. and Nakamura;M.
最近的研究越来越关注女性装饰品，有几项研究调查了女性装饰品与生殖的关系。然而，之前的大多数研究都集中在单个雌性装饰品上，而许多物种的雌性，特别是鸟类，拥有多种装饰品。目前尚不清楚多个雌性装饰品是否与生殖性能有关，尽管这一信息对于了解这些装饰品的维护方式至关重要。在这项研究中，我们检查了日本亚洲家燕 Hirundo rustica gutturalis 中多个雌性装饰物的信号功能。首先，研究群体中具有先前繁殖经验的雌性比其他雌性拥有更长的尾巴和更多色彩的喉咙斑块。这表明这些装饰品可以向同种动物提供有关雌性繁殖经历的信息。与雄性相比，白尾斑的大小与雌性的繁殖经历没有显着相关，部分原因是具有较大白斑的雌性在一次失败后返回繁殖的可能性较小。其次，即使在控制了混杂因素之后，尾巴更长、喉咙颜色更丰富的雌性也比其他雌性更早开始繁殖，并且它们与有吸引力的雄性配对（从而也获得了直接和间接的好处），这表明具有此类装饰品的雌性具有交配优势。此外，与长尾雌性配对的雄性在父亲照顾方面投入更多。这些观察到的模式与雄性的模式不同，对于雄性来说，喉咙的颜色和白尾斑的大小，而不是尾巴的长度，是重要的预测因素。事实上，对繁殖日期的性别组合分析表明，性别与尾长和白尾斑点大小之间存在显着的相互作用，表明性别之间存在差异选择。我们的数据表明，对雌性的选择可能会促进某些雌性装饰品的进化和维持，部分独立于雄性装饰品。
Recent research has increasingly focused on female ornamentation, with several studies having investigated female ornaments in relation to reproduction. However, most previous studies have focused on single female ornaments, while females of numerous species, particularly birds, possess multiple ornaments. It is still unclear whether multiple female ornaments are linked to reproductive performance, though this information is crucial for understanding how these ornaments have been maintained. In this study, we examined the signaling function of multiple female ornaments in the Asian Barn SwallowHirundo rustica gutturalisin Japan. First, females with previous breeding experience in the study population had longer tails and more colorful throat patches than other females. This indicates that these ornaments can provide information about the breeding experience of females to conspecifics. In contrast to males, the size of white tail spots was not significantly related to breeding experience in females, partly because females with larger white spots were less likely to return to breed after a failed clutch. Second, females with longer tails and more colorful throats started breeding earlier than others, even after controlling for confounding factors, and they paired with attractive males (thereby obtaining their direct and indirect benefits too), suggesting a mating advantage for females with such ornaments. In addition, males paired with long-tailed females invested more in paternal care. These observed patterns differed from those of males, for whom the throat coloration and the size of white tail spots, rather than tail length, were significant predictors. In fact, a sex-combined analysis of breeding date demonstrated significant interactions of sex in relation to tail length and the size of white tail spots, indicating differential selection between the sexes. Our data suggest that selection on females may facilitate the evolution and maintenance of some female ornaments, partially independently of male ornaments.