Benefits of living closer to kin vary by genealogical relationship in a territorial mammal

Benefits of living closer to kin vary by genealogical relationship in a territorial mammal
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对于领地哺乳动物来说,与亲属住得更近的好处因家谱关系而异

DOI:
10.1098/rspb.2022.1569
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发表时间:
2023
期刊:
Proceedings of the Royal Society B: Biological Sciences
影响因子:
--
通讯作者:
McAdam, Andrew G.
McAdam, Andrew G.
中科院分区:
--
文献类型:
--
作者:
Walmsley, Sam F.;Boutin, Stan;Dantzer, Ben;Lane, Jeffrey E.;Coltman, David W.;McAdam, Andrew G.

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虽然亲属之间的合作互动是群居物种社会的关键组成部分,但它们对社会环境更加多变的物种的重要性尚不清楚。北美红松鼠(Tamiasciurus hudsonicus)在动态的社区中捍卫自己的领土,并从生活在熟悉的同类中获益,但不是亲戚。然而,亲属导向的行为可能仅限于特定的家谱关系,或者受到地理距离的强烈影响,掩盖了它们在更广泛范围内的影响。使用领土之间的距离作为一个代理的能力,个人的互动,我们估计的影响主要亲属(父母,后代,兄弟姐妹)的红松鼠的年度生存和繁殖成功。这种方法揭示了健身和访问亲属之间的关联,但只有某些宗谱关系和健身组件。例如,当生活在离女儿较近的地方时,女性的年存活率会提高,尽管反过来并不正确。最令人惊讶的发现是,当生活在离父亲更近的地方时,男性的年度繁殖成功率更高,这表明父亲和儿子之间可能存在相互认可和合作。总之,这些发现指出了一个物种,这是领土和主要是孤独的亲属动态的健身后果意想不到的细微差别。
While cooperative interactions among kin are a key building block in the societies of group-living species, their importance for species with more variable social environments is unclear. North American red squirrels (Tamiasciurus hudsonicus) defend individual territories in dynamic neighbourhoods and are known to benefit from living among familiar conspecifics, but not relatives. However, kin-directed behaviours may be restricted to specific genealogical relationships or strongly mediated by geographical distance, masking their influence at broader scales. Using distance between territories as a proxy for the ability of individuals to interact, we estimated the influence of primary kin (parents, offspring, siblings) on the annual survival and reproductive success of red squirrels. This approach revealed associations between fitness and access to kin, but only for certain genealogical relationships and fitness components. For example, females had enhanced annual survival when living closer to their daughters, though the reverse was not true. Most surprising was the finding that males had higher annual reproductive success when living closer to their father, suggesting possible recognition and cooperation among fathers and sons. Together, these findings point to unexpected nuance in the fitness consequences of kinship dynamics for a species that is territorial and largely solitary.
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