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Family living and cooperative breeding in birds are associated with the number of avian predators

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2024

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Bliard, Louis
Dufour, Paul
Covas, Rita

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Evolution. Oxford University Press (OUP). 2024, 78(7), S. 1317-1324. ISSN 0014-3820. eISSN 1558-5646. Verfügbar unter: doi: 10.1093/evolut/qpae058

Zusammenfassung

Cooperative breeding occurs when individuals contribute parental care to offspring that are not their own. Numerous intra- and interspecific studies have aimed to explain the evolution of this behavior. Recent comparative work suggests that family living (i.e., when offspring remain with their parents beyond independence) is a critical stepping stone in the evolution of cooperative breeding. Thus, it is key to understand the factors that facilitate the evolution of family living. Within-species studies suggest that protection from predators is a critical function of group living, through both passive benefits such as dilution effects and active benefits such as prosocial antipredator behaviors in family groups. However, the association between predation risk and the formation and prevalence of family groups and cooperative breeding remains untested globally. Here, we use phylogenetic comparative analyses including 2,984 bird species to show that family living and cooperative breeding are associated with increased occurrence of avian predators. These cross-species findings lend support to previous suggestions based on intraspecific studies that social benefits of family living, such as protection against predation, could favor the evolution of delayed dispersal and cooperative breeding.

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570 Biowissenschaften, Biologie

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ISO 690BLIARD, Louis, Paul DUFOUR, Michael GRIESSER, Rita COVAS, 2024. Family living and cooperative breeding in birds are associated with the number of avian predators. In: Evolution. Oxford University Press (OUP). 2024, 78(7), S. 1317-1324. ISSN 0014-3820. eISSN 1558-5646. Verfügbar unter: doi: 10.1093/evolut/qpae058
BibTex
@article{Bliard2024-07-01Famil-69944,
  year={2024},
  doi={10.1093/evolut/qpae058},
  title={Family living and cooperative breeding in birds are associated with the number of avian predators},
  number={7},
  volume={78},
  issn={0014-3820},
  journal={Evolution},
  pages={1317--1324},
  author={Bliard, Louis and Dufour, Paul and Griesser, Michael and Covas, Rita}
}
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