Linking winter and summer events in a migratory bird by using stable-carbon isotopes
Linking winter and summer events in a migratory bird by using stable-carbon isotopes
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DOI：
10.1126/science.282.5395.1884
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发表时间：
1998-12-04
期刊：
影响因子：
56.9
通讯作者：
Holmes, RT
中科院分区：
文献类型：
--
作者：
Marra, PP;Hobson, KA;Holmes, RT
对于候鸟来说，提早到达繁殖地和身体状况是繁殖成功和健康的重要决定因素。到达时间的差异往往超过一个月，晚到的人往往状况较差。特定的同位素特征表明，美国红尾椋鸟（Setophaga ruticilla）所占据的冬季栖息地的质量决定了它们的身体状况和春季出发日期，这反过来又导致了不同的到达时间表和温带繁殖地的条件。这些发现将热带冬季的事件与温带迁徙鸣禽繁殖区的事件联系起来，并提供了冬季栖息地可能受到限制的证据。
For migratory birds, early arrival and physical condition on the breeding grounds are important determinants of reproductive success and fitness. Differences in arrival times often exceed a month, and Later arriving individuals are often in poorer condition. Habitat-specific isotopic signatures indicate that the quality of winter habitats occupied by American redstarts (Setophaga ruticilla) determines their physical condition and spring departure dates, which in turn result in variable arrival schedules and condition on temperate breeding grounds. These findings link events in tropical winter grounds with those in temperate breeding areas for a migratory songbird and provide evidence that winter habitats may be limiting.