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Physiological Mecha...
Physiological Mechanisms of Acute Upper Thermal Tolerance in Fish
- Article/chapterEnglish2023
Publisher, publication year, extent ...
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2023-02-14
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American Physiological Society,2023
Numbers
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LIBRIS-ID:oai:gup.ub.gu.se/326489
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https://gup.ub.gu.se/publication/326489URI
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https://doi.org/10.1152/physiol.00027.2022DOI
Supplementary language notes
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Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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This review is focused on the questions of why fish exhibit heat failure at thermal extremes and which physiological mechanisms determine the acute upper thermal tolerance. We propose that rapid direct thermal impacts on fish act through three fundamental molecular mechanisms reaction rates, protein structure, and membrane fluidity. During acute warming, these molecular effects then lead to loss of equilibrium and death through various cellular, organ, and physiological pathways. These pathways include mitochondrial dysfunction, oxygen limitation, and impacted excitability of excitable cells and eventually lead to neural and/or muscular failure. The pathways may also lead to loss of homeostasis and subsequent heat failure. There is strong evidence in some species for oxygen limitation in these processes and strong evidence against it in other species and contexts. The limiting mechanisms during acute warming therefore appear to differ between species, life stages, and recent thermal history. We conclude that a single mechanism underpinning the acute upper thermal tolerance across species and contexts will not be found. Therefore, we propose future avenues of research that can elucidate major patterns of physiological thermal limitations in fish
Subject headings and genre
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NATURVETENSKAP Biologi hsv//swe
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NATURAL SCIENCES Biological Sciences hsv//eng
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climate change
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fish physiology
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temperature
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thermal biology
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temperature-dependent biogeography
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climate-change
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oxygen limitation
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common killifish
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aerobic scope
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homeoviscous adaptation
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intraspecific
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variation
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growth-performance
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heat
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marine
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Physiology
Added entries (persons, corporate bodies, meetings, titles ...)
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Andreassen, A. H.
(author)
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Jutfelt, Fredrik,1975Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences(Swepub:gu)xjutfr
(author)
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Göteborgs universitetInstitutionen för biologi och miljövetenskap
(creator_code:org_t)
Related titles
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In:Physiology: American Physiological Society38:3, s. 141-1581548-92131548-9221
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