Season-specific carryover of early life associations in a monogamous bird species
Season-specific carryover of early life associations in a monogamous bird species
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一夫一妻制鸟类早期生命关联的季节特定遗留
DOI：
10.1016/j.anbehav.2020.03.016
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发表时间：
2020
期刊：
影响因子：
2.5
通讯作者：
Snijders
中科院分区：
文献类型：
--
作者：
Kurvers;Farine;Jongeling;Snijders
社会关系可以产生重要的健康后果。尽管越来越多的证据表明，社会关系可以跨越不同的环境，但很少有研究调查早期形成的关系是否会延续到成年。例如，一夫一妻制物种的幼鱼会经历一个主要的生命史阶段过渡，即成对形成，在此期间，成对的纽带成为社会组织的中心单位。目前，还不清楚配对成员是否在配对后保留了他们早期的生活关系。我们调查了在一夫一妻制的物种中，在生命早期形成的同性联系是否会延续到成年，以及这种延续是否取决于季节。我们还研究了熟悉性、遗传相关性和攻击性对社会联想持久性的作用。我们研究了社会结构之前和之后对形成圈养藤壶鹅，Brantaleucopsis，一个高度社会化，长寿，一夫一妻制的物种。我们在成对形成之前、随后的繁殖季节和接下来的越冬季节构建了鹅群的关联网络。接下来，我们研究了这些关联在季节变化中是如何延续的。我们发现，早期的生活协会在女性在繁殖季节丢失，但在随后的越冬季节重新出现。在男性中，早期生活的关联在两个季节都持续存在。关联持久性不介导的遗传相关性或熟悉。在繁殖季节，雄性的攻击性很高，而不是雌性，这表明雄性可能在塑造自己和伴侣的社会环境方面发挥了关键作用。我们表明，早期生活的社会关系可以保持到晚年生活。这种关系即使因生殖行为等原因暂时中断，也可以维持下去。因此，我们的研究结果强调，早期生活的社会环境可以对个人的社会环境产生终身影响。
Social relationships can have important fitness consequences. Although there is increasing evidence that social relationships carry over across contexts, few studies have investigated whether relationships formed early in life are carried over to adulthood. For example, juveniles of monogamous species go through a major life history stage transition, pair formation, during which the pair bond becomes a central unit of the social organization. At present, it remains unclear whether pair members retain their early life relationships after pair formation. We investigated whether same-sex associations formed early in life carry over into adulthood and whether carryover was dependent on season, in a monogamous species. We also investigated the role of familiarity, genetic relatedness and aggression on the perseverance of social associations. We studied the social structure before and after pair formation in captive barnacle geese,Brantaleucopsis, a highly social, long-lived, monogamous species. We constructed association networks of groups of geese before pair formation, during the subsequent breeding season and in the following wintering season. Next, we studied how these associations carried over during seasonal changes. We found that early life associations in females were lost during the breeding season but resurfaced during the subsequent wintering season. In males, the early life associations persisted across both seasons. Association persistence was not mediated by genetic relatedness or familiarity. The high level of aggressiveness of males, but not females, in the breeding season suggests that males may have played a key role in shaping both their own social environment and that of their partners. We show that early life social relationships can be maintained well into later life. Such relationships can be sustained even if they are temporarily disrupted, for example due to reproductive behaviour. Our findings therefore highlight that the early life social environment can have lifelong consequences for individuals’ social environment.
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