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Complex effects of helper relatedness on female extrapair reproduction in a cooperative breeder

Hajduk, Gabriela K.; Cockburn, Andrew; Osmond, Helen; Kruuk, Loeske


In cooperatively breeding species, the presence of male helpers in a group often reduces the breeding female’s fidelity to her social partner, possibly because there is more than one potential sire in the group. Using a long-term study of cooperatively breeding superb fairy-wrens (Malurus cyaneus) and records of paternity in 1936 broods, we show that the effect of helpers on rates of extrapair paternity varied according to the helpers’ relatedness to the breeding female. The presence of...[Show more]

CollectionsANU Research Publications
Date published: 2021
Type: Journal article
Source: Behavioral Ecology
DOI: 10.1093/beheco/araa142


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