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Predictably philandering females prompt poor paternal provisioning

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Title: Predictably philandering females prompt poor paternal provisioning
Authors: Schroeder, J
Yu-Hsun
Winney, I
Simons, MJP
Nakagawa, S
Burke, T
Item Type: Journal Article
Abstract: One predicted cost of female infidelity in socially monogamous species is that cuckolded males should provide less parental care. This relationship is robust across species, but evidence is ambiguous within species. We do not know whether individual males reduce their care when paired with cheating females compared with when paired with faithful females (within-male adjustment) or, alternatively, if the males that pair with cheating females are the same males that provide less parental care in general (between-male effect). Our exceptionally extensive long-term data set of repeated observations of a wild passerine allows us to disentangle paternal care adjustment within males—within pairs and between males—while accounting for environmental variables. We found a within-male adjustment of paternal provisioning, but not incubation effort, relative to the cuckoldry in their nest. This effect was mainly driven by females differing consistently in their fidelity. There was no evidence that this within-male adjustment also took place across broods with the same female, and we found no between-male effect. Interestingly, males that gained more extrapair paternity provided less care. Data from a cross-foster experiment suggested that males did not use kin recognition to assess paternity. Our results provide insight into the role of individual variation in parental care and mating systems.
Issue Date: 2-Jun-2016
Date of Acceptance: 29-Mar-2016
URI: http://hdl.handle.net/10044/1/30444
DOI: https://dx.doi.org/10.1086/687243
ISSN: 1537-5323
Publisher: University of Chicago Press
Start Page: 219
End Page: 230
Journal / Book Title: American Naturalist
Volume: 188
Issue: 2
Copyright Statement: This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits reuse of the work with attribution.
Funder's Grant Number: DFG
Keywords: Science & Technology
Life Sciences & Biomedicine
Ecology
Evolutionary Biology
Environmental Sciences & Ecology
parental investment
extrapair paternity
social feedback
monogamy
mating systems
EXTRA-PAIR PATERNITY
ARCT ET-AL
DUNNOCKS PRUNELLA-MODULARIS
IN-HOUSE SPARROWS
PARENTAL CARE
PASSER-DOMESTICUS
GENETIC SIMILARITY
INDIRECT SELECTION
SEXUAL SELECTION
KIN RECOGNITION
06 Biological Sciences
Publication Status: Published
Appears in Collections:Faculty of Natural Sciences