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Linking biogeography to physiology: Evolutionary and acclimatory adjustments of thermal limits

Temperature-adaptive physiological variation plays important roles in latitudinal biogeographic patterning and in setting vertical distributions along subtidal-to-intertidal gradients in coastal marine ecosystems. Comparisons of congeneric marine invertebrates reveal that the most warm-adapted speci...

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Autor principal: Somero, George N
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2005
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC546413/
https://www.ncbi.nlm.nih.gov/pubmed/15679952
http://dx.doi.org/10.1186/1742-9994-2-1
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author Somero, George N
author_facet Somero, George N
author_sort Somero, George N
collection PubMed
description Temperature-adaptive physiological variation plays important roles in latitudinal biogeographic patterning and in setting vertical distributions along subtidal-to-intertidal gradients in coastal marine ecosystems. Comparisons of congeneric marine invertebrates reveal that the most warm-adapted species may live closer to their thermal tolerance limits and have lower abilities to increase heat tolerance through acclimation than more cold-adapted species. In crabs and snails, heart function may be of critical importance in establishing thermal tolerance limits. Temperature-mediated shifts in gene expression may be critical in thermal acclimation. Transcriptional changes, monitored using cDNA microarrays, have been shown to differ between steady-state thermal acclimation and diurnal temperature cycling in a eurythermal teleost fish (Austrofundulus limnaeus). In stenothermal Antarctic notothenioid fish, losses in capacity for temperature-mediated gene expression, including the absence of a heat-shock response, may reduce the abilities of these species to acclimate to increased temperatures. Differences among species in thermal tolerance limits and in the capacities to adjust these limits may determine how organisms are affected by climate change.
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spelling pubmed-5464132005-02-02 Linking biogeography to physiology: Evolutionary and acclimatory adjustments of thermal limits Somero, George N Front Zool Review Temperature-adaptive physiological variation plays important roles in latitudinal biogeographic patterning and in setting vertical distributions along subtidal-to-intertidal gradients in coastal marine ecosystems. Comparisons of congeneric marine invertebrates reveal that the most warm-adapted species may live closer to their thermal tolerance limits and have lower abilities to increase heat tolerance through acclimation than more cold-adapted species. In crabs and snails, heart function may be of critical importance in establishing thermal tolerance limits. Temperature-mediated shifts in gene expression may be critical in thermal acclimation. Transcriptional changes, monitored using cDNA microarrays, have been shown to differ between steady-state thermal acclimation and diurnal temperature cycling in a eurythermal teleost fish (Austrofundulus limnaeus). In stenothermal Antarctic notothenioid fish, losses in capacity for temperature-mediated gene expression, including the absence of a heat-shock response, may reduce the abilities of these species to acclimate to increased temperatures. Differences among species in thermal tolerance limits and in the capacities to adjust these limits may determine how organisms are affected by climate change. BioMed Central 2005-01-17 /pmc/articles/PMC546413/ /pubmed/15679952 http://dx.doi.org/10.1186/1742-9994-2-1 Text en Copyright © 2005 Somero; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Review
Somero, George N
Linking biogeography to physiology: Evolutionary and acclimatory adjustments of thermal limits
title Linking biogeography to physiology: Evolutionary and acclimatory adjustments of thermal limits
title_full Linking biogeography to physiology: Evolutionary and acclimatory adjustments of thermal limits
title_fullStr Linking biogeography to physiology: Evolutionary and acclimatory adjustments of thermal limits
title_full_unstemmed Linking biogeography to physiology: Evolutionary and acclimatory adjustments of thermal limits
title_short Linking biogeography to physiology: Evolutionary and acclimatory adjustments of thermal limits
title_sort linking biogeography to physiology: evolutionary and acclimatory adjustments of thermal limits
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC546413/
https://www.ncbi.nlm.nih.gov/pubmed/15679952
http://dx.doi.org/10.1186/1742-9994-2-1
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