Body temperature rebounds on sea ice and is elevated by mercury contamination in a keystone predator
Despite overall stability, plasticity in endothermic body temperature (T b ) occurs, which may facilitate maintenance of crucial activities in the face of climate change-related environmental variations. However, this plasticity may be limited by physiological or energetic constraints, which are pot...
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ftinsu:oai:HAL:hal-03874807v1 2023-05-15T13:16:22+02:00 Body temperature rebounds on sea ice and is elevated by mercury contamination in a keystone predator Grunst, Melissa Grunst, Andrea Grémillet, David Sato, Akiko Gentès, Sophie Fort, Jérôme LIttoral ENvironnement et Sociétés - UMR 7266 (LIENSs) Institut national des sciences de l'Univers (INSU - CNRS)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) 2022-11-28 https://hal.science/hal-03874807 https://doi.org/10.1101/2022.10.18.512690 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1101/2022.10.18.512690 hal-03874807 https://hal.science/hal-03874807 BIORXIV: 2022.10.18.512690 doi:10.1101/2022.10.18.512690 https://hal.science/hal-03874807 2022 [SDE]Environmental Sciences info:eu-repo/semantics/preprint Preprints, Working Papers, . 2022 ftinsu https://doi.org/10.1101/2022.10.18.512690 2023-02-08T17:54:05Z Despite overall stability, plasticity in endothermic body temperature (T b ) occurs, which may facilitate maintenance of crucial activities in the face of climate change-related environmental variations. However, this plasticity may be limited by physiological or energetic constraints, which are potentially exacerbated by other environmental stressors. For instance, chemical contamination may elevate energetic costs and have endocrine disrupting effects that undermine thermoregulation. We leveraged advanced biologging techniques to elucidate how T b varies with different behavioral states and environmental conditions in a keystone Arctic seabird, the little auk ( Alle alle ). We additionally evaluated whether mercury (Hg) contamination independently affected T b , or limited or increased state-dependent changes in T b . T b was highest and relatively invariable when birds were at the colony, and rebounded when birds were resting on sea ice, following declines while foraging (diving) in polar waters. These results suggest that the colony and sea ice function as thermal refuges for little auks. In addition, T b increased with ambient temperature and relative humidity across behavioral states, and increased with wind speed when birds were flying. Little auks with higher Hg levels had higher, less variable, T b across behaviors and environmental contexts, perhaps reflecting increased metabolic rates linked to detoxification costs. Results provide evidence for environment- and contaminant-related effects on T b , but not interactive effects between the two, and suggest that loss of sea ice and increased environmental contamination under global change may have serious implications for T b regulation and energy balance. Report Alle alle Arctic Climate change little auk Sea ice Institut national des sciences de l'Univers: HAL-INSU Arctic |
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Institut national des sciences de l'Univers: HAL-INSU |
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language |
English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Grunst, Melissa Grunst, Andrea Grémillet, David Sato, Akiko Gentès, Sophie Fort, Jérôme Body temperature rebounds on sea ice and is elevated by mercury contamination in a keystone predator |
topic_facet |
[SDE]Environmental Sciences |
description |
Despite overall stability, plasticity in endothermic body temperature (T b ) occurs, which may facilitate maintenance of crucial activities in the face of climate change-related environmental variations. However, this plasticity may be limited by physiological or energetic constraints, which are potentially exacerbated by other environmental stressors. For instance, chemical contamination may elevate energetic costs and have endocrine disrupting effects that undermine thermoregulation. We leveraged advanced biologging techniques to elucidate how T b varies with different behavioral states and environmental conditions in a keystone Arctic seabird, the little auk ( Alle alle ). We additionally evaluated whether mercury (Hg) contamination independently affected T b , or limited or increased state-dependent changes in T b . T b was highest and relatively invariable when birds were at the colony, and rebounded when birds were resting on sea ice, following declines while foraging (diving) in polar waters. These results suggest that the colony and sea ice function as thermal refuges for little auks. In addition, T b increased with ambient temperature and relative humidity across behavioral states, and increased with wind speed when birds were flying. Little auks with higher Hg levels had higher, less variable, T b across behaviors and environmental contexts, perhaps reflecting increased metabolic rates linked to detoxification costs. Results provide evidence for environment- and contaminant-related effects on T b , but not interactive effects between the two, and suggest that loss of sea ice and increased environmental contamination under global change may have serious implications for T b regulation and energy balance. |
author2 |
LIttoral ENvironnement et Sociétés - UMR 7266 (LIENSs) Institut national des sciences de l'Univers (INSU - CNRS)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Report |
author |
Grunst, Melissa Grunst, Andrea Grémillet, David Sato, Akiko Gentès, Sophie Fort, Jérôme |
author_facet |
Grunst, Melissa Grunst, Andrea Grémillet, David Sato, Akiko Gentès, Sophie Fort, Jérôme |
author_sort |
Grunst, Melissa |
title |
Body temperature rebounds on sea ice and is elevated by mercury contamination in a keystone predator |
title_short |
Body temperature rebounds on sea ice and is elevated by mercury contamination in a keystone predator |
title_full |
Body temperature rebounds on sea ice and is elevated by mercury contamination in a keystone predator |
title_fullStr |
Body temperature rebounds on sea ice and is elevated by mercury contamination in a keystone predator |
title_full_unstemmed |
Body temperature rebounds on sea ice and is elevated by mercury contamination in a keystone predator |
title_sort |
body temperature rebounds on sea ice and is elevated by mercury contamination in a keystone predator |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03874807 https://doi.org/10.1101/2022.10.18.512690 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Alle alle Arctic Climate change little auk Sea ice |
genre_facet |
Alle alle Arctic Climate change little auk Sea ice |
op_source |
https://hal.science/hal-03874807 2022 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1101/2022.10.18.512690 hal-03874807 https://hal.science/hal-03874807 BIORXIV: 2022.10.18.512690 doi:10.1101/2022.10.18.512690 |
op_doi |
https://doi.org/10.1101/2022.10.18.512690 |
_version_ |
1766273695905480704 |