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Short-term changes in air humidity and water availability weakly constrain thermoregulation in a dry-skinned ectotherm

Thermoregulation is critical for ectotherms as it allows them to maintain their body temperature close to an optimum for ecological performance. Thermoregulation includes a range of behaviors that aim at regulating body temperature within a range centered around the thermal preference. Thermal prefe...

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Autores principales: Le Galliard, Jean-François, Rozen-Rechels, David, Lecomte, Anjélica, Demay, Clémence, Dupoué, Andréaz, Meylan, Sandrine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7909639/
https://www.ncbi.nlm.nih.gov/pubmed/33635881
http://dx.doi.org/10.1371/journal.pone.0247514
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author Le Galliard, Jean-François
Rozen-Rechels, David
Lecomte, Anjélica
Demay, Clémence
Dupoué, Andréaz
Meylan, Sandrine
author_facet Le Galliard, Jean-François
Rozen-Rechels, David
Lecomte, Anjélica
Demay, Clémence
Dupoué, Andréaz
Meylan, Sandrine
author_sort Le Galliard, Jean-François
collection PubMed
description Thermoregulation is critical for ectotherms as it allows them to maintain their body temperature close to an optimum for ecological performance. Thermoregulation includes a range of behaviors that aim at regulating body temperature within a range centered around the thermal preference. Thermal preference is typically measured in a thermal gradient in fully-hydrated and post-absorptive animals. Short-term effects of the hydric environment on thermal preferences in such set-ups have been rarely quantified in dry-skinned ectotherms, despite accumulating evidence that dehydration might trade-off with behavioral thermoregulation. Using experiments performed under controlled conditions in climatic chambers, we demonstrate that thermal preferences of a ground-dwelling, actively foraging lizard (Zootoca vivipara) are weakly decreased by a daily restriction in free-standing water availability (less than 0.5°C contrast). The influence of air humidity during the day on thermal preferences depends on time of the day and sex of the lizard, and is generally weaker than those of of free-standing water (less than 1°C contrast). This shows that short-term dehydration can influence, albeit weakly, thermal preferences under some circumstances in this species. Environmental humidity conditions are important methodological factors to consider in the analysis of thermal preferences.
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spelling pubmed-79096392021-03-05 Short-term changes in air humidity and water availability weakly constrain thermoregulation in a dry-skinned ectotherm Le Galliard, Jean-François Rozen-Rechels, David Lecomte, Anjélica Demay, Clémence Dupoué, Andréaz Meylan, Sandrine PLoS One Research Article Thermoregulation is critical for ectotherms as it allows them to maintain their body temperature close to an optimum for ecological performance. Thermoregulation includes a range of behaviors that aim at regulating body temperature within a range centered around the thermal preference. Thermal preference is typically measured in a thermal gradient in fully-hydrated and post-absorptive animals. Short-term effects of the hydric environment on thermal preferences in such set-ups have been rarely quantified in dry-skinned ectotherms, despite accumulating evidence that dehydration might trade-off with behavioral thermoregulation. Using experiments performed under controlled conditions in climatic chambers, we demonstrate that thermal preferences of a ground-dwelling, actively foraging lizard (Zootoca vivipara) are weakly decreased by a daily restriction in free-standing water availability (less than 0.5°C contrast). The influence of air humidity during the day on thermal preferences depends on time of the day and sex of the lizard, and is generally weaker than those of of free-standing water (less than 1°C contrast). This shows that short-term dehydration can influence, albeit weakly, thermal preferences under some circumstances in this species. Environmental humidity conditions are important methodological factors to consider in the analysis of thermal preferences. Public Library of Science 2021-02-26 /pmc/articles/PMC7909639/ /pubmed/33635881 http://dx.doi.org/10.1371/journal.pone.0247514 Text en © 2021 Le Galliard et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Le Galliard, Jean-François
Rozen-Rechels, David
Lecomte, Anjélica
Demay, Clémence
Dupoué, Andréaz
Meylan, Sandrine
Short-term changes in air humidity and water availability weakly constrain thermoregulation in a dry-skinned ectotherm
title Short-term changes in air humidity and water availability weakly constrain thermoregulation in a dry-skinned ectotherm
title_full Short-term changes in air humidity and water availability weakly constrain thermoregulation in a dry-skinned ectotherm
title_fullStr Short-term changes in air humidity and water availability weakly constrain thermoregulation in a dry-skinned ectotherm
title_full_unstemmed Short-term changes in air humidity and water availability weakly constrain thermoregulation in a dry-skinned ectotherm
title_short Short-term changes in air humidity and water availability weakly constrain thermoregulation in a dry-skinned ectotherm
title_sort short-term changes in air humidity and water availability weakly constrain thermoregulation in a dry-skinned ectotherm
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7909639/
https://www.ncbi.nlm.nih.gov/pubmed/33635881
http://dx.doi.org/10.1371/journal.pone.0247514
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