One for all and all for one: phenotype assortment and reproductive success in masculinized females

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dc.contributor.authorCorrea, Loreto A.
dc.contributor.authorLeon, Cecilia
dc.contributor.authorRamirez-Estrada, Juan
dc.contributor.authorLy-Prieto, Alvaro
dc.contributor.authorAbades, Sebastian
dc.contributor.authorHayes, Loren D.
dc.contributor.authorSoto-Gamboa, Mauricio
dc.contributor.authorEbensperger, Luis A.
dc.date.accessioned2025-01-20T22:03:24Z
dc.date.available2025-01-20T22:03:24Z
dc.date.issued2021
dc.description.abstractHomophily by morphological and behavioral traits has been described in several species of vertebrates, but its functional consequences remain poorly studied. Homophily by plurally breeding females may improve direct fitness by enhancing reproductive success. Female mammals may exhibit phenotypical masculinization due to exposure to androgens during early development, a condition that is associated with maternal performance during subsequent breeding. Our goal was to assess whether female composition (in terms of masculinization) of plurally breeding groups influences female fitness in a natural population of degus (Octodon degus). We assessed if plurally breeding female degus assort themselves by anogenital distance (AGD), an accurate measure of masculinization level. We also quantified if homophily by AGD phenotype affects female reproductive success and the reproductive output of the group. Plurally breeding groups typically included similarly masculinized (i.e., long AGD) females or similarly feminized (short AGD) females, indicating a strong degree of homophily. Females weaned more offspring in plurally breeding groups with more masculinized females. Additionally, standardized variance in the number of offspring weaned decreased in plurally breeding groups with mostly masculinized females, indicating greater reproductive equality in these groups. We conclude that female degus organize into homophilic social groups of similar AGD, and that social groups of masculinized females exhibit a higher reproductive success.
dc.fuente.origenWOS
dc.identifier.doi10.1093/beheco/arab093
dc.identifier.eissn1465-7279
dc.identifier.issn1045-2249
dc.identifier.urihttps://doi.org/10.1093/beheco/arab093
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94037
dc.identifier.wosidWOS:000736063200022
dc.issue.numero6
dc.language.isoen
dc.pagina.final1275
dc.pagina.inicio1266
dc.revistaBehavioral ecology
dc.rightsacceso restringido
dc.subjectanogenital distance
dc.subjecthomophily
dc.subjectphenotype assortment
dc.subjectplural breeding
dc.subjectreproductive success
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleOne for all and all for one: phenotype assortment and reproductive success in masculinized females
dc.typeartículo
dc.volumen32
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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