One for all and all for one: phenotype assortment and reproductive success in masculinized females
| العنوان: | One for all and all for one: phenotype assortment and reproductive success in masculinized females |
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| المؤلفون: | Sebastián Abades, Juan Ramírez-Estrada, Cecilia León, Luis A. Ebensperger, Mauricio Soto-Gamboa, Álvaro Ly-Prieto, Loreto A. Correa, Loren D. Hayes |
| المصدر: | Behavioral Ecology. 32:1266-1275 |
| بيانات النشر: | Oxford University Press (OUP), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Reproductive success, Evolutionary biology, Animal Science and Zoology, Biology, Phenotype, Ecology, Evolution, Behavior and Systematics |
| الوصف: | Homophily 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. |
| تدمد: | 1465-7279 1045-2249 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::897f2adcb198df925819218fbddd3d6a https://doi.org/10.1093/beheco/arab093 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........897f2adcb198df925819218fbddd3d6a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14657279 10452249 |
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