Adaptive latitudinal shifts in the thermal physiology of a terrestrial isopod

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dc.contributor.authorCastañeda, LE
dc.contributor.authorLardies, MA
dc.contributor.authorBozinovic, F
dc.date.accessioned2025-01-21T01:08:06Z
dc.date.available2025-01-21T01:08:06Z
dc.date.issued2004
dc.description.abstractTemperature is the most important abiotic factor affecting physiology, ecology and evolution in ectotherms. Do organisms broadly distributed along a latitudinal gradient adapt to local differences in temperature? In ectotherms this question has played a central role in evolutionary physiology. By means of an extensive field study and laboratory experiments, we tested the existence of local adaptations in thermal traits along 10degrees of latitude in northern-central Chile. We studied behavioural and thermal traits that have been directly connected with the thermal physiology of ectotherms, along the latitudinal gradient. Using three populations of the common woodlouse (terrestrial isopod), Porcellio laevis, we examined changes in thermal physiology traits (i.e. thermal tolerance, thermal performance) and behavioural traits (i.e. thermoregulation in the field and the laboratory). Performance (i.e. righting response speed) reached a maximum value at intermediate temperatures, and was highest for the northern population. Chill-coma temperature showed an increase towards high latitude, while heat-coma temperature did not vary between populations. On the other hand, optimum temperature was negatively correlated with latitude. Thus, southern woodlice appear to have evolved towards becoming low-temperature specialists, whereas woodlice from warm regions demonstrate low cold tolerance as well as a higher optimum temperature. Our results demonstrate that P. laevis woodlice from different parts of the distribution range show patterns in thermal physiology that covary with the thermal environment (i.e. latitude); thus, P laevis adapts to local environments to increase its performance.
dc.fuente.origenWOS
dc.identifier.eissn1937-3791
dc.identifier.issn1522-0613
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96424
dc.identifier.wosidWOS:000221990800007
dc.issue.numero4
dc.language.isoen
dc.pagina.final593
dc.pagina.inicio579
dc.revistaEvolutionary ecology research
dc.rightsacceso restringido
dc.subjectectotherm
dc.subjectthermal sensitivity
dc.subjectthermal tolerance
dc.subjectlatitudinal gradient
dc.subjectlocal adaptation
dc.subjecttemperature
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleAdaptive latitudinal shifts in the thermal physiology of a terrestrial isopod
dc.typeartículo
dc.volumen6
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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