ArticleEvolution; international journal of organic evolution2014
Costly infidelity: low lifetime fitness of extra-pair offspring in a passerine bird.
Article in Evolution; international journal of organic evolution, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 61 citations in OpenAlex.
- The costs of extra-pair behaviours in birds.Biological reviews of the Cambridge Philosophical Society · 2026Review
- Transgenerational effects of multiple mating inEcology and evolution · 2023Article
- Longitudinal telomere dynamics within natural lifespans of a wild bird.Scientific reports · 2023Article
- The significant role of post-pairing male behavior on the evolution of male preferences and female traits.Communications biology · 2022Article
- Should females prefer old males?Evolution letters · 2021Article
- Female extra-pair behavior is not associated with reduced paternal care in Thorn-tailed Rayadito.Ecology and evolution · 2021Article
- Coevolution of female fidelity and male help in populations with alternative reproductive tactics.Proceedings. Biological sciences · 2021Article
- Genetic mating system, population genetics and effective size of Saffron Finches breeding in southern South America.Genetica · 2019Article
- No evidence for kin recognition in a passerine bird.PloS one · 2019Article
- Male age is associated with extra-pair paternity, but not with extra-pair mating behaviour.Scientific reports · 2018Article
- Nonadaptive female pursuit of extrapair copulations can evolve through hitchhiking.Ecology and evolution · 2018Article
- Article
- Heritability and social brood effects on personality in juvenile and adult life-history stages in a wild passerine.Journal of evolutionary biology · 2018Article
- Increased extra-pair paternity in broods of aging males and enhanced recruitment of extra-pair young in a migratory bird.Evolution; international journal of organic evolution · 2015Article
- Limited catching bias in a wild population of birds with near-complete census information.Ecology and evolution · 2015Article
- Reduced fitness in progeny from old parents in a natural population.Proceedings of the National Academy of Sciences of the United States of America · 2015Article
- Why inclusive fitness can make it adaptive to produce less fit extra-pair offspring.Proceedings. Biological sciences · 2015Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Extra-pair copulation (EPC) is widespread in socially monogamous species, but its evolutionary benefits remain controversial. Indirect genetic benefit hypotheses postulate that females engage in EPC to produce higher quality extra-pair offspring (EPO) than within-pair offspring (WPO). In contrast, the sexual conflict hypothesis posits that EPC is beneficial to males but not to females. Thus, under the sexual conflict hypothesis, EPO are predicted to be no fitter than WPO. We tested these two hypotheses in a 12-year dataset with complete life-history and pedigree information from an isolated island population of house sparrows (Passer domesticus). We compared fitness components of EPO and two types of WPO: (1) WPO from genetically polyandrous "unfaithful" mothers, and (2) WPO from genetically monogamous mothers. We found that all three groups of offspring had similar probabilities of hatching and nestling survival. Unexpectedly, EPO had the lowest probability of recruiting into the breeding population and the lowest lifetime reproductive output. Our results indicate that EPO incurred indirect genetic costs, rather than benefits, which is contrary to indirect benefit models. Importantly, the indirect costs we observed are also underappreciated in current sexual conflict models. Our results call for improved theoretical frameworks that incorporate indirect costs by extending current sexual conflict models.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.