Within-group male relatedness reduces harm to females in Drosophila

Pau Carazo, Cedric K. W. Tan, Felicity Allen, Stuart Wigby and Tommaso Pizzari ()
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Pau Carazo: Edward Grey Institute, University of Oxford, Oxford OX1 3PS, UK
Cedric K. W. Tan: Edward Grey Institute, University of Oxford, Oxford OX1 3PS, UK
Felicity Allen: Edward Grey Institute, University of Oxford, Oxford OX1 3PS, UK
Stuart Wigby: Edward Grey Institute, University of Oxford, Oxford OX1 3PS, UK
Tommaso Pizzari: Edward Grey Institute, University of Oxford, Oxford OX1 3PS, UK

Nature, 2014, vol. 505, issue 7485, 672-675

Abstract: Relatedness can affect fitness through modulation of intrasexual competition in Drosophila melanogaster; male competition and female harm are lower when three related males compete over an unrelated female than when three unrelated males compete, but when two brothers and an unrelated male compete, the unrelated male sires twice as many offspring as either brother, suggesting that minorities of unrelated competitors may be able to infiltrate coalitions of relatives.

Date: 2014
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DOI: 10.1038/nature12949

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