Water Quality Impact on Fish Behavior: A Review From an Aquaculture Perspective

Reviews in Aquaculture, Journal Year: 2024, Volume and Issue: 17(1)

Published: Nov. 6, 2024

ABSTRACT Changes in water quality significantly shape fish behavior, a crucial index reflecting the growth and welfare status of fish. Given centrality this relationship to aquaculture practices, comprehensive understanding how dynamics influence behavior is imperative. While there have been some summaries effects parameters on physiology growth, few reviews their reported yet. This article several which are great concern from multiple facets actual production, including physical (water temperature turbidity), chemical (dissolved oxygen, salinity, pH, inorganic nitrogen), pollutants (microplastics crude oil), gained increasing attention researchers practitioners over past decades. Variations these can exert profound physiology, metabolism, internal tissues organs, sensory perception, influences behaviors such as swimming, schooling, feeding, predation, anti‐predation, aggression, courtship, well adaptive stress‐related exploration, avoidance response, anxiety‐like behavior. By synthesizing behavioral changes caused by specific parameters, review aims provide strong support for further quality‐related research, thereby fostering environments conducive both productivity.

Language: Английский

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Differential Reshaping of Skin and Intestinal Microbiota by Stocking Density and Oxygen Availability in Farmed Gilthead Sea Bream (Sparus aurata): A Behavioral and Network-Based Integrative Approach

Microorganisms, Journal Year: 2024, Volume and Issue: 12(7), P. 1360 - 1360

Published: July 2, 2024

Fish were kept for six weeks at three different initial stocking densities and water O2 concentrations (low-LD, 8.5 kg/m3 95–70% saturation; medium-MD, 17 55–75% high-HD, 25 60–45% saturation), with temperature increasing from 19 °C to 26–27 °C. The improvement in growth performance the decrease density was related changes skin intestinal mucosal microbiomes. Changes microbiome composition higher skin, an increased abundance of Alteromonas Massilia HD fish. However, these bacteria genera mutually exclusive, a reactive behavior systemic regulation via liver Gh/Igf system, while correlated proactive regulatory transition towards muscle rather than liver. At level, microbial showed opposite trend two taxa, rendering low Reyranella high Prauserella This up-regulated host gene expression, affecting immune response, epithelial cell turnover, abiotic stress response. Most observed responses are adaptive nature, they would serve infer new welfare indicators resilience.

Language: Английский

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Heart Rate Monitoring During Behavioral Stress Tests in Bold and Shy Rainbow Trout (Oncorhynchus mykiss)

Fishes, Journal Year: 2025, Volume and Issue: 10(1), P. 23 - 23

Published: Jan. 7, 2025

Monitoring stress in captive fish is crucial for their welfare, but continuous physiological measures unrestrained animals are challenging. Rainbow trout (Oncorhynchus mykiss) exhibit divergent personalities, ranging from bold to shy, which correlate with cortisol-mediated responses. To determine whether personality affects the sympathetic nervous system, heart rate was measured during three potentially stressful events as a proxy system Firstly, were classified or using novel object test. Subsequently, implanted biologgers record vivo at rest and after behavioral tests. Following recovery, underwent second test, confinement pair-wise contest, final test explore degree of boldness over experimental period, remained consistent. Heart relatively higher both shy contest compared indicated that monitoring valid gauge valence experience. responses did not differ between trout, indicating phenotype influence autonomic response. Thus, reliable indicator without need account intra-specific variations.

Language: Английский

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Premises for digital twins reporting on Atlantic salmon wellbeing

Behavioural Processes, Journal Year: 2025, Volume and Issue: 226, P. 105163 - 105163

Published: Feb. 4, 2025

Many species of fish, birds and mammals commonly live in human captivity; Atlantic salmon Salmo salar is one them. The international legal status the welfare captive animals slowly developing still requires rigorous specification. For example, even though fish have complex cognition elements sentience, United Nations' animal principles take a functional health-centred perspective overlooking cognitive-affective component. Wellbeing problems remain major source slow growth high mortality intensive aquaculture salmon. value system for decision making vertebrates based on expectations emotional wellbeing options available linked with individual's assessment its future. We propose new approach monitoring improving (or any other or wild vertebrate) modelling salmon's by digital twins, which are simulation models that implement bodily mechanisms organism. Indeed, predictions boredom, stress can all be captured computational evolutionary model factors underlying behaviour. explain how such an agent-based twins constructed subjective experience along prediction near future allostasis (the preparation expected future). attempt to identify building blocks required twin deliver early warnings about escalating issues could eventually lead negative effects health aquaculture. These would provide critical insights optimizing production processes significantly reduce reliance experiments. Overall, reports population support implementation 3Rs - replacement, reduction, refinement offering actionable information farmers as well consumers, voters, politicians regulators relevant guide experimental work across species.

Language: Английский

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Harmonizing Animal Health and Welfare in Modern Aquaculture: Innovative Practices for a Sustainable Seafood Industry

Fishes, Journal Year: 2025, Volume and Issue: 10(4), P. 156 - 156

Published: April 2, 2025

A critical distinction often overlooked, yet rudimentary to the sustainable infrastructure of a complex and generative industry, is fundamental difference between animal health welfare in aquaculture. While these terms are frequently used interchangeably by producers, advocates, policymakers, understanding how they both correlate deviate from one another commercial farming practices an essential element development with as priority, rather than mere formality. This review represents turn tide where we aggregate effective examples actionable blueprints seafood industry can use elevate replicate responsible modern These must be designed respect interests all stakeholders, including animals farmed, ensure that their quality life captivity not just maintained but enhanced. The importance incorporating into decision-making processes, it closely tied public environmental sustainability, has garnered attention recent years no indication fleeting interest. Articulating observed benefits operations have adopted positive processes expose more sustainable, harmonious relationship producers help facilitate meaningful progress collective buy-in.

Language: Английский

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Assessment of Tilapia (Oreochromis spp.) Welfare in the Semi-Intensive and Intensive Culture Systems in Thailand

Animals, Journal Year: 2023, Volume and Issue: 13(15), P. 2498 - 2498

Published: Aug. 2, 2023

Welfare assessments have risen to prominence in the aquaculture industry, with increasing awareness of their significance among stakeholders Thailand. In this study, we conducted a welfare assessment tilapia (Oreochromis spp.) farms Thailand, focusing on health, environmental, behavioural, and nutritional indicators. Comparing semi-intensive (earthen ponds) intensive farming practices (cage culture), found significant differences overall health score, particularly at farm F due disease outbreak (Kruskal-Wallis, p = 0.01). Skin fin scores varied across farms, indicating potential as indicators health. Environmental revealed transparency between two culturing systems (Mann-Whitney, 0.02). During harvesting process, behaviours indicated poor all farms. However, no statistically difference was systems. Correlations were observed nutritional, indicators, negative correlations fish density water (r -0.87, 0.02), presence inhabitants -0.78, 0.04), feeding swimming during capture -0.98, 0.001). These findings provide valuable insights enhance tilapia-farming

Language: Английский

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Social buffering of behavioural stress response in two fish species, Nile tilapia (Oreochromis niloticus) and koi carp (Cyprinus carpio)

Ethology, Journal Year: 2024, Volume and Issue: 130(7)

Published: April 21, 2024

Abstract The presence of conspecifics plays a crucial role in mitigating stress responses social teleost species and holds potential for enhancing welfare captive fish. While studies on buffering effects have typically focussed single species, marked interspecific differences can exist. Here, we conducted an analysis response two the most extensively farmed fish, Nile tilapia koi carp. Subjects were exposed to behavioural assay (open‐field test) three conditions simulating increasing levels enrichment: isolation, pairs, or shoals five We obtained indicators from assay: thigmotaxis, freezing, activity, erratic movements interindividual distance with more than one In both significantly decreased enrichment, suggesting similar effect. However, other revealed differences. Koi carp, but not tilapia, showed socially‐mediated reduction whereas freezing behaviour. Furthermore, enrichment determined opposite activity species: active as group size increased, trend was found Finally, increased size, no changes observed Our study indicates that do completely overlap between different fish highlighting importance developing finely‐tuned species‐specific enrichments indicators.

Language: Английский

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Mucosal epithelial homeostasis: Reference intervals for skin, gill lamellae and filament for Atlantic salmon and other fish species

Journal of Fish Diseases, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Abstract Mucosal barriers are gatekeepers of health and exhibit homeostatic variation in relation to habitat disease. Mapping technology provides an in‐depth examination the dynamic mucous cells (MCs) fish mucosal on tangential sections, about 90° from view traditional histology. The method was originally developed standardized academia prior establishment QuantiDoc AS apply mapping, now trademarked as Veribarr™ for analysis skin, gills gastrointestinal tracts. uses design‐based stereology selection measurement cell area (size) (μm 2 ), volumetric density MCs epithelium (MCD, amount epithelia occupied by MCs, %) calculated abundance (barrier status or defence activity). MC production mapped across skin gill 12 species, discovering that consistently have two distinct groups one lamellae where few small filament larger more abundant. were usually much than gills, with latter requiring fewer smaller adequate respiration. difference observed between lamella is likely a result functional demands. In addition, our findings also highlight parameters species which cannot be explained weight differences, potential link distribution species‐specific lifestyles lamella. This diversity necessitates development tissue site‐specific reference intervals evaluation. bivariate production, including size (trophy) activity (plasia) Atlantic salmon, contrast new measurements against historical data patterns. application demonstrates stress parasites treatments can manifest changes architecture, evidenced hypertrophy hyperplasia within lamellae. These facilitate comparisons wild revealing somewhat higher level farmed salmon suggest stress/environmental responses aquaculture. They advocate developing specific aquaculture improve welfare all species.

Language: Английский

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Polyculture of pikeperch (Sander lucioperca) and Russian sturgeon (Acipenser gueldenstaedtii) using an artificial common pellet – Implications on feed to fish nutrient transfers in recirculating aquaculture system (RAS)

Aquaculture Reports, Journal Year: 2024, Volume and Issue: 38, P. 102288 - 102288

Published: Aug. 2, 2024

Language: Английский

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Puzzle feeder as a cognitive enrichment strategy determines long-term welfare improvements in a teleost fish

Applied Animal Behaviour Science, Journal Year: 2024, Volume and Issue: unknown, P. 106401 - 106401

Published: Sept. 1, 2024

Language: Английский

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