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首页> 外文期刊>Ethology >Dispersal in Kin Coalition Throughout the Non-Breeding Season to Facilitate Fine-Scale Genetic Structure in the Breeding Season: Evidence From a Small Passerine
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Dispersal in Kin Coalition Throughout the Non-Breeding Season to Facilitate Fine-Scale Genetic Structure in the Breeding Season: Evidence From a Small Passerine

机译：在整个非育种季节散布亲缘联盟，以促进育种季节的精细规模遗传结构：来自小雀形目的证据

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摘要

Evidence shows that social cooperation among kin may evolve even in birds with extensive dispersal. In such cases, maintaining kinship during dispersal is essential to the subsequent expression of kin cooperation. This hypothesis has not been examined for most bird species. We addressed it in the ground tit (Parus humilis), a passerine where kin frequently interact in terms of cooperative polygamy and extra-pair mating despite fast annual turnover of the breeding population. Pedigree and genotype data showed that while groups varied in composition throughout the non-breeding season due to continual individual emigration and immigration, they always contained kin coalitions consisting of either local or immigrant individuals of different age and sexes. The first-order kin coalitions, according to the information from local individuals, stemmed from single-family lineages (siblings and their parents), and the lower-order ones from neighbouring, related family lineages that merged after fledging. It was probable that immigrants had formed kin coalitions in similar ways before dispersing. Groups broke up in the breeding season. Pairing between unrelated individuals from different coalitions within a group was more likely, whereas related individuals from the same coalition tended to nest near each other. The resulting fine-scale population genetic structure is expected to facilitate breeding interactions among kin. Our findings give clues to understanding the evolution of social cooperation in relation to dispersal.
机译：有证据表明，即使在鸟类广泛传播的情况下，亲戚之间的社会合作也可能发展。在这种情况下，在散布期间维持亲属关系对于随后的亲属合作关系的表达至关重要。大多数鸟类都没有检验这一假设。我们在山雀（Parus humilis）中处理了它，这是一种雀形目，尽管繁殖种群的年营业额快速增长，但亲属经常在合作一夫多妻制和成对配对中相互作用。家谱和基因型数据表明，尽管整个群体在整个非育种季节由于个体不断的移徙和移民而组成有所变化，但它们总是包含由不同年龄和性别的本地或移民个体组成的亲属联盟。根据当地人的信息，一阶亲属联盟来自单亲家族谱系（兄弟姐妹及其父母），而下级家族则来自邻居的相关家族谱系，这些家族在出逃后合并在一起。在驱散之前，移民很可能以类似的方式组成了血亲联盟。在繁殖季节，群体破裂。同一组中来自不同联盟的无关个人之间的配对可能性更高，而来自同一联盟的相关个人则倾向于彼此靠近。预期由此产生的小规模种群遗传结构将促进亲属之间的育种互动。我们的发现为了解社会合作在传播方面的发展提供了线索。

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