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High rates of infidelity in the Grey Fantail Rhipidura albiscapa suggest that testis size may be a better correlate of extra-pair paternity than sexual dimorphism

Hoffman, Joseph I.; Munro, Kat; Kilner, Rebecca; Amos, W.

Description

The Grey Fantail Rhipidura albiscapa is a socially monogamous passerine endemic to Australia. Behavioural and morphological clues point to opposing conclusions as to its breeding system; sexual monomorphism and monochrome colorations suggest monogamy, whereas relatively large testes and a prominent cloacal protruberance are more indicative of multiple mating and sperm competition. We used five highly variable microsatellite loci to investigate the genetic breeding system of this species....[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/61788
Source: Ibis
DOI: 10.1111/j.1474-919X.2009.01007.x

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