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National Academy of Sciences, Proceedings of the National Academy of Sciences, 43(114), 2017

DOI: 10.1073/pnas.1704350114

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Kinship and familiarity mitigate costs of social conflict between Seychelles warbler neighbors

Journal article published in 2017 by Kat Bebbington ORCID, Sjouke A. Kingma ORCID, Eleanor A. Fairfield, Hannah L. Dugdale ORCID, Jan Komdeur, Lewis G. Spurgin ORCID, David S. Richardson
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Significance In nature, animals must compete with their neighbors for access to limited resources. Since conflict over resources can be extremely costly in terms of time, energy, and reproductive success, investigating how individuals resolve conflict is crucial to understanding the evolution of social behaviors. In the Seychelles warbler, we demonstrate two mechanisms by which individuals minimize costs of conflict and show the benefits individuals gain from doing so. Birds that live near relatives or familiar individuals invest less energy in defending and maintaining territory borders and also show less aging-related signs of physiological damage. Our results suggest that conflict between neighbors can be mitigated by kin-selected benefits of sharing resources with relatives but also through direct mutual benefits of cooperation.