Ecological drivers of group living in two populations of the communally rearing rodent, <i>Octodon degus</i>

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dc.contributor.authorEbensperger, Luis A.
dc.contributor.authorSobrero, Raul
dc.contributor.authorQuirici, Veronica
dc.contributor.authorCastro, Rodrigo A.
dc.contributor.authorOrtiz Tolhuysen, Liliana
dc.contributor.authorVargas, Francisco
dc.contributor.authorBurger, Joseph Robert
dc.contributor.authorQuispe, Rene
dc.contributor.authorVillavicencio, Camila P.
dc.contributor.authorVasquez, Rodrigo A.
dc.contributor.authorHayes, Loren D.
dc.date.accessioned2025-01-20T23:59:40Z
dc.date.available2025-01-20T23:59:40Z
dc.date.issued2012
dc.description.abstractIntraspecific variation in sociality is thought to reflect a trade-off between current fitness benefits and costs that emerge from individuals' decision to join or leave groups. Since those benefits and costs may be influenced by ecological conditions, ecological variation remains a major, ultimate cause of intraspecific variation in sociality. Intraspecific comparisons of mammalian sociality across populations facing different environmental conditions have not provided a consistent relationship between ecological variation and group-living. Thus, we studied two populations of the communally rearing rodent Octodon degus to determine how co-variation between sociality and ecology supports alternative ecological causes of group living. In particular, we examined how variables linked to predation risk, thermal conditions, burrowing costs, and food avail-ability predicted temporal and population variation in sociality. Our study revealed population and temporal variation in total group size and group composition that covaried with population and yearly differences in ecology. In particular, predation risk and burrowing costs are supported as drivers of this social variation in degus. Thermal differences, food quantity and quality were not significant predictors of social group size. In contrast to between populations, social variation within populations was largely uncoupled from ecological differences.
dc.fuente.origenWOS
dc.identifier.doi10.1007/s00265-011-1274-3
dc.identifier.eissn1432-0762
dc.identifier.issn0340-5443
dc.identifier.urihttps://doi.org/10.1007/s00265-011-1274-3
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95303
dc.identifier.wosidWOS:000300248100011
dc.issue.numero2
dc.language.isoen
dc.pagina.final274
dc.pagina.inicio261
dc.revistaBehavioral ecology and sociobiology
dc.rightsacceso restringido
dc.subjectSociality
dc.subjectPredation risk
dc.subjectBurrowing costs
dc.subjectFood availability
dc.subjectThermal conditions
dc.subjectDegus
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleEcological drivers of group living in two populations of the communally rearing rodent, <i>Octodon degus</i>
dc.typeartículo
dc.volumen66
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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