Social constraint and an absence of sex-biased dispersal drive fine-scale genetic structure in white-winged choughs

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dc.contributor.authorBeck, Nadeena
dc.contributor.authorPeakall, Rodney
dc.contributor.authorHeinsohn, Robert
dc.date.accessioned2015-12-10T22:35:46Z
dc.date.issued2008
dc.date.updated2015-12-09T10:30:34Z
dc.description.abstractThis study used eight polymorphic microsatellite loci to examine the relative effects of social organization and dispersal on fine-scale genetic structure in an obligately cooperative breeding bird, the white-winged chough (Corcorax melanorhamphos). Using both individual-level and population-level analyses, it was found that the majority of chough groups consisted of close relatives and there was significant differentiation among groups (FST = 0.124). However, spatial autocorrelation analysis revealed strong spatial genetic structure among groups up to 2 km apart, indicating above average relatedness among neighbours. Multiple analyses showed a unique lack of sex-biased dispersal. As such, choughs may offer a model species for the study of the evolution of sex-biased dispersal in cooperatively breeding birds. These findings suggest that genetic structure in white-winged choughs reflects the interplay between social barriers to dispersal resulting in large family groups that can remain stable over long periods of times, and short dispersal distances which lead to above average relatedness among neighbouring groups.
dc.identifier.issn0962-1083
dc.identifier.urihttp://hdl.handle.net/1885/56410
dc.publisherBlackwell Publishing Ltd
dc.sourceMolecular Ecology
dc.subjectKeywords: DNA; Africa; aging; animal; article; blood; breeding; ecosystem; Europe; evolution; female; forelimb; genetic polymorphism; genetic variability; genetics; histology; isolation and purification; male; season; sexual development; social behavior; songbird; Cooperative breeding; Corcorax melanorhamphos; Dispersal; Genetic structure; Sex-bias; Spatial autocorrelation
dc.titleSocial constraint and an absence of sex-biased dispersal drive fine-scale genetic structure in white-winged choughs
dc.typeJournal article
local.bibliographicCitation.lastpage4358
local.bibliographicCitation.startpage4346
local.contributor.affiliationBeck, Nadeena, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationPeakall, Rodney, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationHeinsohn, Robert, College of Medicine, Biology and Environment, ANU
local.contributor.authoremailu9306248@anu.edu.au
local.contributor.authoruidBeck, Nadeena, u3638640
local.contributor.authoruidPeakall, Rodney, u9306248
local.contributor.authoruidHeinsohn, Robert, u8406391
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor060201 - Behavioural Ecology
local.identifier.absfor060411 - Population, Ecological and Evolutionary Genetics
local.identifier.ariespublicationu9511635xPUB361
local.identifier.citationvolume17
local.identifier.doi10.1111/j.1365-294X.2008.03906.x
local.identifier.scopusID2-s2.0-52649085730
local.identifier.thomsonID000259525900015
local.identifier.uidSubmittedByu9511635
local.type.statusPublished Version

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