Show simple item record Bowers, E. Keith Munclinger, Pavel Bureš, Stanislav Nádvorník, Petr Kučerová, Lenka Krist, Miloš
dc.coverage.spatial Central Europe 2012-10-12T17:54:52Z 2012-10-12T17:54:52Z 2012-11-01
dc.identifier doi:10.5061/dryad.pt384
dc.identifier.citation Bowers EK, Munclinger P, Bureš S, Nádvorník P, Kučerová L, Krist M (2012) Cross-fostering eggs reveals that female collared flycatchers adjust clutch sex ratios according to parental ability to invest in offspring. Molecular Ecology 22(1): 215-228.
dc.description Across animal taxa, reproductive success is generally more variable and more strongly dependent upon body condition for males than for females; in such cases, parents able to produce offspring in above-average condition are predicted to produce sons, whereas parents unable to produce offspring in good condition should produce daughters. We tested this hypothesis in the collared flycatcher (Ficedula albicollis) by cross-fostering eggs among nests and using the condition of foster young that parents raised to fledging as a functional measure of their ability to produce fit offspring. As predicted, females raising heavier-than-average foster fledglings with their social mate initially produced male-biased primary sex ratios, whereas those raising lighter-than-average foster fledglings produced female-biased primary sex ratios. Females also produced male-biased clutches when mated to males with large secondary sexual characters (wing patches), and tended to produce male-biased clutches earlier within breeding seasons relative to females breeding later. However, females did not adjust the sex of individuals within their clutches; sex was distributed randomly with respect to egg size, laying order, and paternity. Future research investigating the proximate mechanisms linking ecological contexts and the quality of offspring parents are able to produce with primary sex-ratio variation could provide fundamental insight into the evolution of context-dependent sex-ratio adjustment.
dc.relation.haspart doi:10.5061/dryad.pt384/1
dc.relation.haspart doi:10.5061/dryad.pt384/2
dc.relation.isreferencedby doi:10.1111/mec.12106
dc.relation.isreferencedby PMID:23116299
dc.subject Sexual Selection
dc.subject Behavior/Social Evolution
dc.subject Birds
dc.subject Population Ecology
dc.subject Sex Allocation
dc.subject Egg Size
dc.subject Parental Investment
dc.subject Trivers-Willard model
dc.subject Extra-pair Paternity
dc.subject Maternal Effects
dc.title Data from: Cross-fostering eggs reveals that female collared flycatchers adjust clutch sex ratios according to parental ability to invest in offspring
dc.type Article *
dwc.ScientificName Ficedula albicollis
dc.contributor.correspondingAuthor Krist, Miloš
prism.publicationName Molecular Ecology

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