Social environment and anogenital distance length phenotype interact to explain testosterone levels in a communally rearing rodent: Part 1: The male side

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dc.contributor.authorCorrea, Loreto A.
dc.contributor.authorAspillaga-Cid, Antonia
dc.contributor.authorBauer, Carolyn M.
dc.contributor.authorSilva-Alvarez, Danna
dc.contributor.authorLeon, Cecilia
dc.contributor.authorRamirez-Estrada, Juan
dc.contributor.authorSoto-Gamboa, Mauricio
dc.contributor.authorHayes, Loren D.
dc.contributor.authorEbensperger, Luis A.
dc.date.accessioned2025-01-20T17:08:07Z
dc.date.available2025-01-20T17:08:07Z
dc.date.issued2024
dc.description.abstractIn vertebrates, male testosterone levels vary across the year being generally higher during the mating season relative to the offspring rearing season. However, male testosterone levels may also be associated with male anogenital distance (AGD) length (a proxy of prenatal androgen exposition), and influenced by the social group environment. In social species, it has been proposed that high levels of testosterone could be incompatible with the development of an amicable social environment. Thus, in these species, it is predicted that males have relatively low levels of testosterone. Our goal was to examine the potential association between male serum testosterone levels, season, male AGD length, and the social environment in the rodent Octodon degus under natural conditions. We quantified male serum testosterone levels during the mating and offspring rearing seasons, and we determined the number of females and males in each social group, as well as the composition of groups, in terms of the AGD length of the female and male group mates, from 2009 to 2019. Our results revealed that male testosterone levels covary with season, being highest during the offspring rearing season. Additionally, male testosterone levels vary with male AGD length, and female and male social group environments. More importantly, male degus exhibit low levels of testosterone that are indistinguishable from female levels during offspring rearing season. Similar to other highly social mammals, where males and females live together yearround, male amicable behavior could be the best male mating strategy, thus leading to a reduction in circulating testosterone levels.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.yhbeh.2024.105479
dc.identifier.eissn1095-6867
dc.identifier.issn0018-506X
dc.identifier.urihttps://doi.org/10.1016/j.yhbeh.2024.105479
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90918
dc.identifier.wosidWOS:001174227200001
dc.language.isoen
dc.revistaHormones and behavior
dc.rightsacceso restringido
dc.subjectAnogenital distance length
dc.subjectMale testosterone
dc.subjectMale phenotype
dc.subjectFemale phenotype
dc.subjectSocial group environment
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.titleSocial environment and anogenital distance length phenotype interact to explain testosterone levels in a communally rearing rodent: Part 1: The male side
dc.typeartículo
dc.volumen160
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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