Effects of temperature on feeding and digestive processes in fish

Temperature, Journal Year: 2020, Volume and Issue: 7(4), P. 307 - 320

Published: May 8, 2020

As most fish are ectotherms, their physiology is strongly affected by temperature. Temperature affects metabolic rate and thus energy balance behavior, including locomotor feeding behavior. influences the ability/desire of to obtain food, how they process food through digestion, absorb nutrients within gastrointestinal tract, store excess energy. display a large variability in habitats, habits, anatomical physiological features, effects temperature complex species-specific. The depend on timing, intensity, duration exposure as well speed at which changes occur. Whereas acute short-term variations might have drastic, often detrimental, physiology, long-term gradual lead acclimation, e.g. digestive enzyme profiles. goal this review summarize our current knowledge homeostasis, with specific focus metabolism, feeding, able "adapt" changing environments phenotypic changes.

Language: Английский

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The role of mechanistic physiology in investigating impacts of global warming on fishes

Journal of Experimental Biology, Journal Year: 2021, Volume and Issue: 224(Suppl_1)

Published: Feb. 15, 2021

ABSTRACT Warming of aquatic environments as a result climate change is already having measurable impacts on fishes, manifested changes in phenology, range shifts and reductions body size. Understanding the physiological mechanisms underlying these seemingly universal patterns crucial if we are to reliably predict fate fish populations with future warming. This includes an understanding for acute thermal tolerance, extreme heatwaves may be major driver observed effects. The hypothesis gill oxygen limitation (GOL) claimed explain asymptotic growth, why some species decreasing size warming; but its assumptions conflict established knowledge direct mechanistic evidence lacking. oxygen- capacity-limited tolerance (OCLTT) has stimulated wave research into role supply capacity performance curves aerobic scope, results vary greatly between species, indicating that it unlikely mechanism. As remain important incorporating models, discuss potentially fruitful alternatives notably specific dynamic action growth rate. We consider limitations estimating by single rapid measure whose mechanism not known. emphasise continued importance experimental physiology, particularly advancing our mechanisms, also challenge making this relevant more complex reality.

Language: Английский

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Thermal performance of fish is explained by an interplay between physiology, behaviour and ecology

Conservation Physiology, Journal Year: 2019, Volume and Issue: 7(1)

Published: Jan. 1, 2019

Increasing temperatures under climate change are thought to affect individual physiology of fish and other ectotherms through increases in metabolic demands, leading changes species performance with concomitant effects on ecology. Although intuitively appealing, the driving mechanism behind thermal is contested; (e.g. growth) appears correlated scope (i.e. oxygen availability for activity) a number species, but substantial datasets do not support limitation long-term performance. Whether or limitations via scope, lack thereof, have major ecological consequences remains highly contested question. size trait-based model energy budgets determine relative influence rates, environmental conditions ectotherm We show that necessary explain variation temperature. Oxygen can drastically limit fitness, especially at temperature extremes, primarily driven by interplay between changing rates Furthermore, our reveals fitness trends oppose growth, suggesting potential explanation paradox often occur lower than their growth optimum. Our provides mechanistic underpinning provide general realistic predictions about impacts function as null contrasting different traits.

Language: Английский

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Fish Welfare in Aquaculture: Physiological and Immunological Activities for Diets, Social and Spatial Stress on Mediterranean Aqua Cultured Species

Fishes, Journal Year: 2023, Volume and Issue: 8(8), P. 414 - 414

Published: Aug. 12, 2023

Welfare assessment currently is less well-characterized for aquatic animals and the classical methodologies used terrestrial are not adequate to improve our knowledge about fish well-being. Among different approaches, status of organism responses can be carried out using physiological biochemical tools. Here, we present state art regarding welfare, methodologies, experimental results with a particular focus on two important Mediterranean aquaculture species, Sparus aurata Dicentrarchus labrax. We introduce an approach stress-indicators, growth performance swimming activity investigate effects implantation electronic tags facilitate application telemetry purposes. The research organisms has expanded recently, its utilization needs better understood. mentioned approaches have been discussed in methodologies. Moreover, social stress territoriality relevant factors evaluation gregarious species that may consequences conditions farmed captivity. These aspects, impair ability respond various stimuli or negatively influence flesh quality, here analysed through behavioural observation, flanked by immunological approach.

Language: Английский

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Metabolic and functional impacts of hypoxia vary with size in Atlantic salmon

Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology, Journal Year: 2019, Volume and Issue: 231, P. 30 - 38

Published: Jan. 27, 2019

Language: Английский

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Effects of temperature on physiological performance and behavioral thermoregulation in an invasive fish, the round goby

Journal of Experimental Biology, Journal Year: 2020, Volume and Issue: unknown

Published: Jan. 1, 2020

Invasive species exert negative impacts on biodiversity and ecosystems a global scale, which may be enhanced in the future by climate change. Knowledge of how invasive respond physiologically behaviorally to novel changing environments can improve our understanding traits enable ecological success these species, potentially facilitate mitigation efforts. We examined effects acclimation temperatures ranging from 5 28°C aerobic metabolic rates, upper temperature tolerance (critical thermal maximum, CTmax), as well preference (Tpref) avoidance (Tavoid) round goby (Neogobius melanostomus), one most impactful world. show that maintained high scope 15 28°C; is, capacity increase its rate above maintenance metabolism remained across broad range. Although CTmax increased relatively little with compared other Tpref Tavoid were not affected at all, meaning large safety margin (CTmax-Tavoid) temperatures, indicating level resilience this species. The unperturbed physiological performance probably facilitated levels phenotypic buffering, make readily adaptable ecologically competitive environments. suggest behavioral could common for would only their under continued

Language: Английский

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Shoaling, boldness, anxiety-like behavior and locomotion in zebrafish (Danio rerio) are altered by acute benzo[a]pyrene exposure

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 774, P. 145702 - 145702

Published: Feb. 7, 2021

Language: Английский

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Sustainable aquaculture and sea ranching with the use of vaccines: a review

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 11

Published: Jan. 10, 2025

As aquaculture takes on a major role in global seafood production, the industry has encountered several hurdles, notably disease management and overharvesting natural habitats challenges. Vaccination is critical component of immunological preventive strategy essential for health animals. Over past two decades, vaccines have revolutionized sector by addressing these issues while enhancing productivity ecological balance. Advanced vaccine technologies, including DNA, recombinant, inactivated vaccines, demonstrated their potential to transform sea ranching. Innovations like recombinant DNA goldfish using G protein expressed baculovirus spring viremia carp ME-VAC Aqua Strept tilapia highlight ability reduce antibiotic dependence support greener practices. Multivalent salmon farming further showcase effectiveness improving fish productivity. Emerging solutions such as plant-based mucosal offer scalable, cost-effective options immunizing large populations, reducing disease-related losses, stabilizing supply chains. Vaccines also improve survival rates hatchery-reared habitats, supporting long-term sustainability. By integrating vaccination with selective breeding resistance, can achieve enhanced reduced environmental impact. The article highlights impact technology leap forward research cooperation that will allow collective mobilization prevent aquatic disease. Not only that, this review discusses challenges opportunities increase resilience surviving open waters. Emphasis transformative enabling technological advancements, fostering collaborations, economic ensure sustainable future ranching been highlighted well. Future directions implications widespread adoption are discussed.

Language: Английский

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The gill parasite Paramoeba perurans compromises aerobic scope, swimming capacity and ion balance in Atlantic salmon

Conservation Physiology, Journal Year: 2017, Volume and Issue: 5(1)

Published: Jan. 1, 2017

The parasitic amoeba Paramoeba perurans is an aetiological agent of amoebic gill disease (AGD), a serious problem in seawater salmonid aquaculture globally. Other finfish species are also infected and infection events may be associated with periods unusual high temperatures. Currently little known about the impact AGD on wild fish, but time global warming increasing production this potential threat could rise. A better understanding pathophysiology fish therefore warranted. In study, groups Atlantic salmon without were tested large swim tunnel respirometer at 13°C to assess oxygen uptake, swimming capacity blood parameters. Standard metabolic rates similar between groups, maximum rate uptake was drastically reduced which resulted smaller aerobic scope (AS) 203 mg O2 kg-1 h-1 compared 406 healthy fish. critical speed 2.5 body lengths s-1 3.0 ones. Furthermore, had lower haematocrit [haemoglobin], condition factor Prior trials higher plasma osmolality, elevated [Na+], [Cl-] [cortisol], indicating maintain ionic homoeostasis as well chronic stress during routine conditions. These results demonstrate that compromises function both terms gas exchange ion regulation, consequently for activity reduced. Reduced AS due P. infections likely interfere appetite, growth overall survival, even more so context warmer hypoxic future.

Language: Английский

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Sharing the water column: physiological mechanisms underlying species-specific habitat use in tunas

Reviews in Fish Biology and Fisheries, Journal Year: 2017, Volume and Issue: 27(4), P. 843 - 880

Published: Sept. 15, 2017

Language: Английский

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