How do ectotherms perform in cold environments? Physiological and life-history traits in an Andean viviparous lizard

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dc.contributor.authorClavijo-Baquet, Sabrina
dc.contributor.authorOrellana, Maria J.
dc.contributor.authorSabat, Pablo
dc.contributor.authorBozinovic, Francisco
dc.date.accessioned2025-01-20T21:01:29Z
dc.date.available2025-01-20T21:01:29Z
dc.date.issued2022
dc.description.abstractBoth the mean and the variation in environmental temperature are increasing globally. Indeed, the predicted increases in temperature range from 2 to 4 degrees C in the next 50 years. Ectotherms control body temperature by means of behavior selecting microsites with different temperatures, which makes them more susceptible to changes in climate. Nevertheless, lizards living in high mountain environments have developed several mechanisms to inhabit and colonize variable environments with extreme temperatures. These mechanisms include a high metabolism to be active at lower temperatures and viviparity to improve embryonic development. Despite behavioral thermoregulation acting as a buffer to changes in environmental temperature, other traits such as life-history traits may be less flexible. Consequently, in an attempt to understand how lizards cope with harsh habitats, we evaluated some physiological traits and responses of females of Liolaemus bellii from two contrasting slope sites with differences in environmental temperature and humidity, but at the same altitude in the southern Andes range. We collected pregnant females from opposite slopes and maintained them until parturition in a common-garden experiment. Females from the south-facing slope (S-slope) had higher preferred body temperature (T-pref) values before and after parturition and exhibited higher daily energy expenditure before parturition. Nevertheless, no difference in T-pref was shown by their offspring, suggesting a developmental plastic response or adaptation to lower environmental temperature. For instance, the higher metabolism during pregnancy could be associated with a shorter activity period on the snowy S-slope. Additionally, females from the S-slope had larger kidneys and gave birth later than N-slope females, likely due to developmental plasticity or genetic differentiation. How fixed these traits are, in individuals from the contrasting slopes, will determine the response capacity of the L. bellii population to climate change.
dc.fuente.origenWOS
dc.identifier.doi10.3389/fevo.2022.974968
dc.identifier.issn2296-701X
dc.identifier.urihttps://doi.org/10.3389/fevo.2022.974968
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92896
dc.identifier.wosidWOS:000880602500001
dc.language.isoen
dc.revistaFrontiers in ecology and evolution
dc.rightsacceso restringido
dc.subjectAndes range
dc.subjectbody temperature
dc.subjectChile
dc.subjectLiolaemus bellii
dc.subjectmetabolism
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.titleHow do ectotherms perform in cold environments? Physiological and life-history traits in an Andean viviparous lizard
dc.typeartículo
dc.volumen10
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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