Quantitative genetics of bioenergetics and growth-related traits in the wild mammal, <i>Phyllotis darwini</i>

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dc.contributor.authorNespolo, RF
dc.contributor.authorBustamante, DM
dc.contributor.authorBacigalupe, LD
dc.contributor.authorBozinovic, F
dc.date.accessioned2025-01-21T01:06:49Z
dc.date.available2025-01-21T01:06:49Z
dc.date.issued2005
dc.description.abstractWe studied the potential for response to selection in typical physiological-thermoregulatory traits of mammals such as maximum metabolic rate (MMR), nonshivering thermogenesis (NST) and basal metabolic rate (BMR) on cold-acclimated animals. We used an animal model approach to estimate both narrow-sense heritabilities (h(2)) and genetic correlations between physiological and growth-related traits. Univariate analyses showed that MMR presented high, significant heritability (h(2) = 0.69 - 0.35, asymptotic standard error), suggesting the potential for microevolution in this variable. However, NST and BMR presented low, nonsignificant h2, and NST showed large maternal/common environmental/nonadditive effects (c(2) = 0.34 +/- 0.17). Heritabilities were large and significant (h(2) > 0.5) for all growth-related traits (birth mass, growth rate, weaning mass). The only significant genetic correlations we found between a physiological trait and a growth-related trait was between NST and birth mass (r = -0.74; P < 0.05). Overall, these results suggest that additive genetic variance is present in several bioenergetic traits, and that genetic correlations could be present between those different kinds of traits.
dc.fuente.origenWOS
dc.identifier.eissn1558-5646
dc.identifier.issn0014-3820
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96228
dc.identifier.wosidWOS:000231658900018
dc.issue.numero8
dc.language.isoen
dc.pagina.final1837
dc.pagina.inicio1829
dc.revistaEvolution
dc.rightsacceso restringido
dc.subjectanimal model
dc.subjectG-matrix
dc.subjectgenetic correlations
dc.subjectnarrow-sense heritability
dc.subjectquantitative genetics
dc.subjectREML
dc.subjectrodents
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.titleQuantitative genetics of bioenergetics and growth-related traits in the wild mammal, <i>Phyllotis darwini</i>
dc.typeartículo
dc.volumen59
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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