Sex differences in avian parental care patterns vary across the breeding cycle

Daiping Wang (), Wenyuan Zhang, Shuai Yang and Xiang-Yi Li Richter ()
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Daiping Wang: Chinese Academy of Sciences
Wenyuan Zhang: University of Oxford
Shuai Yang: Chinese Academy of Sciences
Xiang-Yi Li Richter: University of Bern

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract Parental care in birds consists of elaborate forms across stages, including nest building, incubation, and offspring provision. Despite their evolutionary importance, knowledge gaps exist in the extent to which parents contribute disproportionately to these forms and factors that are associated with variations in care patterns between sexes. Here, we analyzed 1533 bird species and discovered remarkable variability in care patterns. We show that parental care should not be viewed as a unitary trait but rather as a set of integrated features that exhibit considerable temporal and sex-specific variation. Our analyses also reveal moderate consistency in care patterns between breeding stages, pointing towards shared intrinsic factors driving sex-specific care. Notably, we found that species experiencing strong sexual selection on males or species facing paternity uncertainty display a tendency towards female-biased care. This work advances our understanding of the temporal variations in sex-specific contributions to avian parental care and their potential evolutionary drivers.

Date: 2023
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DOI: 10.1038/s41467-023-42767-5

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