Feather moult and bird appearance are correlated with global warming over the last 200 years
Feather moult and bird appearance are correlated with global warming over the last 200 years
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DOI：
10.1038/s41467-019-10452-1
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发表时间：
2019-06-10
影响因子：
16.6
通讯作者：
Sapir, N.
中科院分区：
文献类型：
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作者：
Kiat, Y.;Vortman, Y.;Sapir, N.
全球变暖改变了鸟类的各种物候过程，包括先进的繁殖和迁徙时间表。在鸟类中，个体外观在很大程度上是由羽毛决定的，羽毛会影响鸟类的吸引力、社会地位和伪装。大多数雀形目动物的幼鸟在出生后的头几个月里会更换巢中生长的羽毛，这一过程被称为幼鸟后羽毛换羽。利用10个自然历史收集的数据，我们发现在过去的212年（1805-2016）中，幼崽后换羽的程度显著增加，这一趋势与环境温度呈正相关。因此，鸟类在温暖的环境下更换了更多的羽毛，导致幼鸟看起来更像成年鸟。此外，在一些物种中，我们描述了在换羽程度上的雌雄转换，与过去相比，目前雌性比雄性更换更多的羽毛。这些结果表明，不同表型对气候变暖的生物学反应不同。
Global warming alters various avian phenological processes, including advanced reproduction and migration schedules. In birds, individual appearance is largely determined by plumage, influencing, for example, bird attractiveness, social status and camouflage. Juveniles of most passerine species replace their nest-grown plumage during the first months of life, a process that is called post-juvenile feather moult. Using data from ten natural history collections, we show that the extent of the post-juvenile moult has increased significantly over the last 212 years (1805-2016), a trend that is positively correlated with the temperature of the environment. Therefore, it seems that birds replaced more feathers under warmer conditions, causing juveniles to appear more similar to adult birds. Moreover, in several species, we describe a male-female switch in the extent of moult, with females currently replacing more feathers than males compared to the past. These results demonstrate different biological responses to climate warming by different phenotypes.