迁徙对于候鸟繁殖行为的影响：以家燕（Hirundo rustica）为例

迁徙是候鸟生活史的重要阶段，在该阶段候鸟的个体适合度将受到自然选择作用的影响。同时，迁徙对鸟类后续的繁殖行为和繁殖成效将产生直接的滞后效应。目前在种群水平上综合候鸟迁徙行为和繁殖行为的研究相对较少，而开展这方面的研究有助于了解自然选择和性选择共同作用对于物种进化产生的影响。本研究以家燕（Hirundo rustica）为研究对象，利用给家燕佩戴光敏定位仪的技术手段，收集中国东北、华中、华南三个地点的家燕种群表型、迁徙及繁殖三个方面的数据。通过获取南北不同家燕种群的迁徙路线，以明确中国东部家燕的迁徙模式和华南地区家燕的居留类型。通过建立线性混合模型（GLMM），分析迁徙行为可能对家燕个体后续繁殖成效带来的影响，探讨自然选择和性选择对其雄性性选择特征的共同塑造作用。

Migration is an important part of the life history of migratory birds, during which migratory bird individuals are under natural selection. Meanwhile, migration has a direct carry-over effect on the following breeding behaviour and breeding success of migratory birds. Currently, there are few studies combining migratory behaviour and breeding behaviour of migratory birds on the population level, which could help understand the comprehensive effect of natural selection and sexual selection on species evolution. In this study, we target on the Barn Swallow (Hirundo rustica) and plan to collect phenotype data, migration data and breeding data of Barn Swallow populations in northeastern, central and southern China with the help of geolocator logger tracking. We will identify the migration type of Barn Swallows in eastern China through acquiring the migration routes of these Barn Swallow populations and whether Barn Swallows in southern China migrate or not. By analyzing these data through establishing generalized linear mixed models (GLMMs), we aim to clarify the possible impact of migration on the breeding success of Barn Swallows, and discuss the comprehensive shaping effect of natural selection and sexual selection on the sexually selected traits of male swallows.