Diet effects on ectotherm thermal performance

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2024, Volume and Issue: 99(4), P. 1537 - 1555

Published: April 14, 2024

ABSTRACT The environment is changing rapidly, and considerable research aimed at understanding the capacity of organisms to respond. Changes in environmental temperature are particularly concerning as most animals ectothermic, with considered a key factor governing their ecology, biogeography, behaviour physiology. ability ectotherms persist an increasingly warm, variable, unpredictable future will depend on nutritional status. Nutritional resources (e.g. food availability, quality, options) vary across space time response change, but also have alter how much they eat what eat, which may help them improve performance under climate change. In this review, we discuss state knowledge intersection between animal nutrition temperature. We take mechanistic approach describe nutrients (i.e. broad macronutrients, specific lipids, micronutrients) that impact thermal currently known about role ectotherm plasticity, thermoregulatory behaviour, diet preference, tolerance. finish by describing topic can inform aquaculture research.

Language: Английский

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Body size and temperature affect metabolic and cardiac thermal tolerance in fish

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Oct. 19, 2023

Environmental warming is associated with reductions in ectotherm body sizes, suggesting that larger individuals may be more vulnerable to climate change. The mechanisms driving size-specific vulnerability temperature are unknown but required finetune predictions of fisheries productivity and size-structure community responses We explored the potential metabolic cardiac underlying these size trends a eurythermal fish, barred surfperch. acutely exposed surfperch across large range (5-700 g) four ecologically relevant temperatures (16 °C, 12 20 22 °C) subsequently, measured their capacity (absolute factorial aerobic scopes, maximum resting rates; AAS, FAS, MMR, RMR). Additionally, we estimated fish's thermal tolerance by measuring heart rates (fHmax) increasing temperatures. Barred had parallel hypoallometric scaling MMR RMR (exponent 0.81) weaker fHmax - 0.05) all test In contrast our predictions, was maintained sizes acute temperatures, fish greater than smaller fish. These results demonstrate performance limited different physiological constraints depending on animal species interest.

Language: Английский

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Beyond latitude: thermal tolerance and vulnerability of a broadly distributed salmonid across a habitat temperature gradient

Conservation Physiology, Journal Year: 2025, Volume and Issue: 13(1)

Published: Jan. 1, 2025

Salmonid fishes are a focal point of conservation physiology due to their high value humans and ecosystems, susceptibility decline from climate change. A significant challenge in conserving these is that populations the same species can be locally adapted vastly different habitats within wild ranges therefore have unique tolerance or vulnerability environmental stressors those habitats. Within state Oregon, USA, summer steelhead (Oncorhynchus mykiss) inhabit both cool, coastal waters most typically associated with Pacific salmonids arid, inland environments where temperatures more extreme. Here, we utilized streamside physiological experiments paired habitat temperature monitoring assess thermal four distinct All had responses critical maximum, aerobic scope exercise recovery temperature. Despite warm exhibiting higher than cooler habitats, appear vulnerable consequences warming based on extreme they already experience during summer. These results demonstrate an example varying between portion latitudinal range highlight need for habitat-specific strategies this species.

Language: Английский

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A review of adult salmon maximum swim performance.

Canadian Journal of Fisheries and Aquatic Sciences, Journal Year: 2024, Volume and Issue: 81(9), P. 1174 - 1216

Published: Feb. 15, 2024

Salmonids undertake long and strenuous migrations that require aerobic endurance anaerobic burst swimming. Anthropogenic activity natural disasters can make already challenging even more difficult. This reinvigorates a central question: what is the maximum swimming capacity of adult salmon species across environmental conditions? We synthesized literature on swim performance ( Oncorhynchus spp. Salmo salar) to unfold known about how biological (sex body size) physical (temperature) factors affect in salmon. Maximum swimming—bursting, jumping, leaping—are among least studied performances salmonids. Commonly, has been measured using flumes, but evidently faster wild than this set-up capture. show larger fish outswim smaller ones, thermal sensitivity differs inter-and -intra-specifically. Unresolved are temperatures, between males females maturity states. information be used inform exercise physiology research future management mitigation actions necessary conserve these iconic, economically valuable species.

Language: Английский

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Anaerobic Exercise and Recovery: Roles and Implications for Mortality in Pacific Salmon

Reviews in Fisheries Science & Aquaculture, Journal Year: 2023, Volume and Issue: 31(4), P. 497 - 522

Published: June 26, 2023

Routinely, fish encounter stressors and conditions that require the use of anaerobic exercise, including escaping predators, capturing prey, interacting with fisheries. Although metabolism rapidly yields energy to support locomotion, it also accelerates depletion stores, accumulates potentially damaging metabolites, relative aerobic metabolism. During recovery from intense animals are vulnerable may forgo opportunities (e.g., foraging, mating). Recovery is thus likely under strong selection pressure. Despite fact essential for life, relatively little attention has been given its importance fitness survival. Here, ecology physiology following exercise reviewed using Pacific salmon (Oncorhynchus spp.) as a model, though findings relevant wide range species need ubiquitous. Specifically, when why across their lifecycle, physiological consequences this extreme process considered. The considering effective management conservation discussed, examples highlight meaningful ways in which knowledge can be applied problems facing provided, implications widely applicable all fishes. Given current projected climate scenarios, understanding role temperature will become progressively more important, should an explicit consideration assessing vulnerability.

Language: Английский

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Conservation physiology and the management of wild fish populations in the Anthropocene

Fish physiology, Journal Year: 2022, Volume and Issue: unknown, P. 1 - 31

Published: Jan. 1, 2022

Language: Английский

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Thermal tolerance and vulnerability to warming differ between populations of wild Oncorhynchus mykiss near the species’ southern range limit

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Sept. 4, 2023

Fish habitat temperatures are increasing due to human impacts including climate change. For broadly distributed species, thermal tolerance can vary at the population level, making it challenging predict which populations most vulnerable warming. Populations inhabiting warm range boundaries may be more resilient these changes adaptation or acclimatization warmer temperatures, they as already approach their physiological limits. We tested functional and critical of two wild Oncorhynchus mykiss near species' southern limit and, predicted, found population-specific responses temperature. Specifically, stream, Piru Creek, had higher maxima compared from cooler Arroyo Seco. Seco O. likely experience a limitation aerobic scope with Creek mykiss, however, resting metabolic rates prolonged exercise recovery, meaning that could warming if prey dissolved oxygen become limited. Temperature varies widely between streams will have unique based on tolerances requirements.

Language: Английский

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Mechanisms of cardiac collapse at high temperature in a marine teleost (Girella nigrians)

Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology, Journal Year: 2023, Volume and Issue: 286, P. 111512 - 111512

Published: Sept. 17, 2023

Language: Английский

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Despite plasticity, heatwaves are costly for a coral reef fish

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: June 10, 2024

Climate change is intensifying extreme weather events, including marine heatwaves, which are prolonged periods of anomalously high sea surface temperature that pose a novel threat to aquatic animals. Tropical animals may be especially vulnerable heatwaves because they adapted narrow range. If these cannot acclimate the heat could impair their behavior and fitness. Here, we investigated how heatwave conditions affected performance thermal tolerance tropical predatory fish, arceye hawkfish (Paracirrhites arcatus), across two seasons in Moorea, French Polynesia. We found fish's daily activities, recovery from burst swimming digestion, were more energetically costly fish exposed both seasons, while aerobic capacity remained same. Given constrained energy budget, rising costs associated with warming impact prioritize activities. Additionally, hotter temperatures exhibited cardiac plasticity by increasing maximum heart rate but still operating within few degrees limits. With frequent intense hawkfish, other fishes must rapidly acclimate, or suffer physiological consequences alter role ecosystem.

Language: Английский

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Coral reef fishes in a multi-stressor world

Fish physiology, Journal Year: 2022, Volume and Issue: unknown, P. 325 - 391

Published: Jan. 1, 2022

Language: Английский

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