Synchrony does not explain extrapair paternity rate variation in northern or southern house wrens

Katie Labarbera; Paulo E. Llambías; Emily R.A. Cramer; Taza D. Schaming; Irby J. Lovette

doi:10.1093/beheco/arq052

Synchrony does not explain extrapair paternity rate variation in northern or southern house wrens

Katie Labarbera, Paulo E. Llambías, Emily R.A. Cramer, Taza D. Schaming, Irby J. Lovette

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

Rates of extrapair paternity (EPP) vary widely among and within bird species, and 2 hypotheses suggest that this variation is driven by variation in breeding synchrony. These hypotheses make contradictory predictions, and each has some support from field studies, but the general relationship between EPP and synchrony remains unclear. We investigated EPP in relation to population-wide and local breeding synchrony in 2 populations of house wrens (Troglodytes aedon)-a migratory northern temperate (New York, USA) and a sedentary southern temperate (Buenos Aires, Argentina) population-that differ in numerous life-history traits. The northern population had significantly higher EPP rates and modestly but significantly higher local breeding synchrony. Population-wide breeding synchrony did not differ between populations. The proportion of extrapair young within a nest was not related to the nest's population-wide or local synchrony index in either population. These results suggest that across divergent life histories in this species, breeding synchrony does not account for within-population variation in EPP.

Original language	English (US)
Pages (from-to)	773-780
Number of pages	8
Journal	Behavioral Ecology
Volume	21
Issue number	4
DOIs	https://doi.org/10.1093/beheco/arq052
State	Published - Apr 2010
Externally published	Yes

Bibliographical note

Funding Information:
Fuller Evolutionary Biology Program support to K.L., a Howard Hughes Summer Scholarship to K.L.; Mario Einaudi Center for International Studies International Research Travel Grant to P.E.L.; Organization of American States Graduate Fellowship to P.E.L.; The Scientific Research Society to P.E.L.; American Ornithological Union Research Award to P.E.L.; Andrew W. Mellon Student Research Grant to P.E.L.; Cornell Chapter of Sigma Xi Grant to E.R.A.C.; Cornell University College of Agriculture and Life Sciences Science Fellowship to T.D.S.; National Sigma Xi Grant-In-Aid-of-Research (G200803150162 to T.D.S.).

Keywords

Troglodytes aedon
breeding synchrony
extrapair paternity
south temperate ecology

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title = "Synchrony does not explain extrapair paternity rate variation in northern or southern house wrens",

abstract = "Rates of extrapair paternity (EPP) vary widely among and within bird species, and 2 hypotheses suggest that this variation is driven by variation in breeding synchrony. These hypotheses make contradictory predictions, and each has some support from field studies, but the general relationship between EPP and synchrony remains unclear. We investigated EPP in relation to population-wide and local breeding synchrony in 2 populations of house wrens (Troglodytes aedon)-a migratory northern temperate (New York, USA) and a sedentary southern temperate (Buenos Aires, Argentina) population-that differ in numerous life-history traits. The northern population had significantly higher EPP rates and modestly but significantly higher local breeding synchrony. Population-wide breeding synchrony did not differ between populations. The proportion of extrapair young within a nest was not related to the nest's population-wide or local synchrony index in either population. These results suggest that across divergent life histories in this species, breeding synchrony does not account for within-population variation in EPP.",

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Synchrony does not explain extrapair paternity rate variation in northern or southern house wrens

Abstract

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Keywords

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