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Shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events

The study of a species’ thermal tolerance and vital rates responses provides useful metrics to characterize its vulnerability to ocean warming. Under prolonged thermal stress, plastic and adaptive processes can adjust the physiology of organisms. Yet it is uncertain whether the species can expand th...

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Autores principales: de Juan, Carlos, Calbet, Albert, Saiz, Enric
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10539201/
https://www.ncbi.nlm.nih.gov/pubmed/37779672
http://dx.doi.org/10.1093/plankt/fbad037
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author de Juan, Carlos
Calbet, Albert
Saiz, Enric
author_facet de Juan, Carlos
Calbet, Albert
Saiz, Enric
author_sort de Juan, Carlos
collection PubMed
description The study of a species’ thermal tolerance and vital rates responses provides useful metrics to characterize its vulnerability to ocean warming. Under prolonged thermal stress, plastic and adaptive processes can adjust the physiology of organisms. Yet it is uncertain whether the species can expand their upper thermal limits to cope with rapid and extreme changes in environmental temperature. In this study, we reared the marine copepod Paracartia grani at control (19°C) and warmer conditions (25°C) for >18 generations and assessed their survival and fecundity under short-term exposure to a range of temperatures (11–34°C). After multigenerational warming, the upper tolerance to acute exposure (24 h) increased by 1–1.3°C, although this enhancement decreased to 0.3–0.8°C after longer thermal stress (7 days). Warm-reared copepods were smaller and produced significantly fewer offspring at the optimum temperature. No shift in the thermal breadth of the reproductive response was observed. Yet the fecundity rates of the warm-reared copepods in the upper thermal range were up to 21-fold higher than the control. Our results show that chronic warming improved tolerance to stress temperatures and fecundity of P. grani, therefore, enhancing its chances to persist under extreme heat events.
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spelling pubmed-105392012023-09-30 Shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events de Juan, Carlos Calbet, Albert Saiz, Enric J Plankton Res Original Article The study of a species’ thermal tolerance and vital rates responses provides useful metrics to characterize its vulnerability to ocean warming. Under prolonged thermal stress, plastic and adaptive processes can adjust the physiology of organisms. Yet it is uncertain whether the species can expand their upper thermal limits to cope with rapid and extreme changes in environmental temperature. In this study, we reared the marine copepod Paracartia grani at control (19°C) and warmer conditions (25°C) for >18 generations and assessed their survival and fecundity under short-term exposure to a range of temperatures (11–34°C). After multigenerational warming, the upper tolerance to acute exposure (24 h) increased by 1–1.3°C, although this enhancement decreased to 0.3–0.8°C after longer thermal stress (7 days). Warm-reared copepods were smaller and produced significantly fewer offspring at the optimum temperature. No shift in the thermal breadth of the reproductive response was observed. Yet the fecundity rates of the warm-reared copepods in the upper thermal range were up to 21-fold higher than the control. Our results show that chronic warming improved tolerance to stress temperatures and fecundity of P. grani, therefore, enhancing its chances to persist under extreme heat events. Oxford University Press 2023-09-06 /pmc/articles/PMC10539201/ /pubmed/37779672 http://dx.doi.org/10.1093/plankt/fbad037 Text en © The Author(s) 2023. Published by Oxford University Press. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
de Juan, Carlos
Calbet, Albert
Saiz, Enric
Shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events
title Shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events
title_full Shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events
title_fullStr Shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events
title_full_unstemmed Shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events
title_short Shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events
title_sort shifts in survival and reproduction after chronic warming enhance the potential of a marine copepod to persist under extreme heat events
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10539201/
https://www.ncbi.nlm.nih.gov/pubmed/37779672
http://dx.doi.org/10.1093/plankt/fbad037
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