Inbreeding depresses altruism in a cooperative society

Wells DA, Cant MA, Hoffman J, Nichols H (2020)
Ecology Letters.

Zeitschriftenaufsatz | E-Veröff. vor dem Druck | Englisch
 
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Autor*in
Wells, David A.; Cant, Michael A.; Hoffman, JosephUniBi ; Nichols, HazelUniBi
Abstract / Bemerkung
In some animal species, individuals regularly breed with relatives, including siblings and parents. Given the high fitness costs of inbreeding, evolutionary biologists have found it challenging to understand the persistence of these inbred societies in nature. One appealing but untested explanation is that early life care may create a benign environment that offsets inbreeding depression, allowing inbred societies to evolve. We test this possibility using 21 years of data from a wild cooperatively breeding mammal, the banded mongoose, a species where almost one in ten young result from close inbreeding. We show that care provided by parents and alloparents mitigates inbreeding depression for early survival. However, as adults, inbred individuals provide less care, reducing the amount of help available to the next generation. Our results suggest that inbred cooperative societies are rare in nature partly because the protective care that enables elevated levels of inbreeding can be reduced by inbreeding depression.
Stichworte
altruism; inbreeding; cooperation; mating systems; evolution; sociality; alloparenting
Erscheinungsjahr
2020
Zeitschriftentitel
Ecology Letters
ISSN
1461-023X
eISSN
1461-0248
Page URI
https://pub.uni-bielefeld.de/record/2945836

Zitieren

Wells DA, Cant MA, Hoffman J, Nichols H. Inbreeding depresses altruism in a cooperative society. Ecology Letters. 2020.
Wells, D. A., Cant, M. A., Hoffman, J., & Nichols, H. (2020). Inbreeding depresses altruism in a cooperative society. Ecology Letters. doi:10.1111/ele.13578
Wells, D. A., Cant, M. A., Hoffman, J., and Nichols, H. (2020). Inbreeding depresses altruism in a cooperative society. Ecology Letters.
Wells, D.A., et al., 2020. Inbreeding depresses altruism in a cooperative society. Ecology Letters.
D.A. Wells, et al., “Inbreeding depresses altruism in a cooperative society”, Ecology Letters, 2020.
Wells, D.A., Cant, M.A., Hoffman, J., Nichols, H.: Inbreeding depresses altruism in a cooperative society. Ecology Letters. (2020).
Wells, David A., Cant, Michael A., Hoffman, Joseph, and Nichols, Hazel. “Inbreeding depresses altruism in a cooperative society”. Ecology Letters (2020).

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