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dc.contributor.authorGrønstøl, Gaute
dc.contributor.authorBlomqvist, Donald
dc.contributor.authorPauliny, Angela
dc.contributor.authorWagner, Richard H.
dc.PublishedRoyal Society Open Science 2015, 2:140409eng
dc.description.abstractResource polygyny incurs costs of having to share breeding resources for female breeders. When breeding with a relative, however, such costs may be lessened by indirect fitness benefits through kin selection, while benefits from mutualistic behaviour, such as communal defence, may increase. If so, females should be less resistant to sharing a territory with a related female than with a non-related one. We investigated whether kin selection may lower the threshold of breeding polygynously, predicting a closer relatedness between polygynous females breeding on the same territory than between females breeding on different territories. Northern lapwings, Vanellus vanellus, are suitable for testing this hypothesis as they are commonly polygynous, both sexes take part in nest defence, and the efficiency of nest defence increases with the number of defenders. Using an index of relatedness derived from DNA fingerprinting, we found that female lapwings that shared polygynous dyads were on average twice as closely related as were random females. Furthermore, relatedness did not correlate with distance between breeders, indicating that our findings cannot be explained by natal philopatry alone. Our results suggest that the polygyny threshold in lapwings may be lowered by inclusive fitness advantages of kin selection.en_US
dc.publisherThe Royal Society Publishingeng
dc.rightsAttribution CC BYeng
dc.subjectkin selectioneng
dc.subjectmate choiceeng
dc.titleKin selection and polygyny: Can relatedness lower the polygyny threshold?eng
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holderCopyright 2015 The Authorseng

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