Costs and benefits of competitive traits in females: aggression, maternal care and reproductive success

Show simple item record Cain, Kristal en Ketterson, ED en 2016-08-17T23:38:51Z en 2013-09-04 en 2013-10 en
dc.identifier.citation PLoS One, 2013, 8 (10), e77816 en
dc.identifier.issn 1932-6203 en
dc.identifier.uri en
dc.description.abstract Recent research has shown that female expression of competitive traits can be advantageous, providing greater access to limited reproductive resources. In males increased competitive trait expression often comes at a cost, e.g. trading off with parental effort. However, it is currently unclear whether, and to what extent, females also face such tradeoffs, whether the costs associated with that tradeoff overwhelm the potential benefits of resource acquisition, and how environmental factors might alter those relationships. To address this gap, we examine the relationships between aggression, maternal effort, offspring quality and reproductive success in a common songbird, the dark-eyed junco (Junco hyemalis), over two breeding seasons. We found that compared to less aggressive females, more aggressive females spent less time brooding nestlings, but fed nestlings more frequently. In the year with better breeding conditions, more aggressive females produced smaller eggs and lighter hatchlings, but in the year with poorer breeding conditions they produced larger eggs and achieved greater nest success. There was no relationship between aggression and nestling mass after hatch day in either year. These findings suggest that though females appear to tradeoff competitive ability with some forms of maternal care, the costs may be less than previously thought. Further, the observed year effects suggest that costs and benefits vary according to environmental variables, which may help to account for variation in the level of trait expression. en
dc.description.uri en
dc.format.medium Electronic-eCollection en
dc.language English en
dc.publisher Public Library of Science en
dc.relation.ispartofseries PLoS One en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from en
dc.rights.uri en
dc.rights.uri en
dc.subject Animals en
dc.subject Songbirds en
dc.subject Aggression en
dc.subject Competitive Behavior en
dc.subject Maternal Behavior en
dc.subject Reproduction en
dc.subject Cost-Benefit Analysis en
dc.subject Female en
dc.subject Male en
dc.title Costs and benefits of competitive traits in females: aggression, maternal care and reproductive success en
dc.type Journal Article en
dc.identifier.doi 10.1371/journal.pone.0077816 en
pubs.issue 10 en
pubs.volume 8 en
dc.description.version VoR - Version of Record en
dc.identifier.pmid 24204980 en en
pubs.publication-status Published en
dc.rights.accessrights en
pubs.subtype Article en
pubs.elements-id 534647 en Science en Biological Sciences en
dc.identifier.eissn 1932-6203 en
pubs.number e77816 en
pubs.record-created-at-source-date 2016-08-18 en
pubs.dimensions-id 24204980 en

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