Invited review - the effects of anthropogenic abiotic stressors on the sensory systems of fishes

Tigert, Liam; Porteus, Cosima S.

doi:10.1016/j.cbpa.2022.111366

Cited by 10 publications

(8 citation statements)

References 95 publications

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“…R. Soc. B 379: 20220503 carpio [52]), probably owing in part to an impairment of sensory (in particular visual) function [3,53].…”

Section: (C) Oxygen Levelsmentioning

confidence: 99%

“…Low oxygen levels inhibit food intake (and subsequently growth) in several fish species (e.g. Atlantic salmon Salmo salar [50], Atlantic cod [51] and common carp Cyprinus carpio [52]), probably owing in part to an impairment of sensory (in particular visual) function [3,53].…”

Section: Effects Of Environmental Factors On Feedingmentioning

confidence: 99%

“…Feeding is often reduced, owing, for example, to reduced swimming and impairment of sensory systems, leading to failure to locate food and feed normally, and possibly starvation [2]. Changes in habitats and ecosystems can also reduce food availability leading to inadequate food intake or changes in diet preference [3]. The endocrine system is a major regulator of feeding and allows organisms to respond and adapt to different environmental changes.…”

Section: Introductionmentioning

confidence: 99%

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The effects of environmental changes on the endocrine regulation of feeding in fishes

Volkoff

2024

Phil. Trans. R. Soc. B

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Fishes are exposed to natural and anthropogenic changes in their environment, which can have major effects on their behaviour and their physiology, including feeding behaviour, food intake and digestive processes. These alterations are owing to the direct action of environmental physico-chemical parameters (i.e. temperature, pH, turbidity) on feeding physiology but can also be a consequence of variations in food availability. Food intake is ultimately regulated by feeding centres of the brain, which receive and process information from endocrine signals from both brain and peripheral tissues such as the gastrointestinal tract. These endocrine signals stimulate or inhibit food intake, and interact with each other to maintain energy homeostasis. Changes in environmental conditions might change feeding habits and rates, thus affecting levels of energy stores, and the expression of endocrine appetite regulators. This review provides an overview of how environmental changes and food availability could affect feeding and these endocrine networks in fishes. This article is part of the theme issue ‘Endocrine responses to environmental variation: conceptual approaches and recent developments’.

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“…R. Soc. B 379: 20220503 carpio [52]), probably owing in part to an impairment of sensory (in particular visual) function [3,53].…”

Section: (C) Oxygen Levelsmentioning

confidence: 99%

Section: Effects Of Environmental Factors On Feedingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effects of environmental changes on the endocrine regulation of feeding in fishes

Volkoff

2024

Phil. Trans. R. Soc. B

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“…Changes in the olfactory processes / responses of some marine animals may be associated with changes in oxygen. However, these changes are generally much harder to study and have not been adequately explored across marine fauna to be useful as an indicator at this time (Tigert and Porteus, 2023).…”

Section: Individual Indicatorsmentioning

confidence: 99%

Reviews and syntheses: Biological Indicators of Oxygen Stress in Water Breathing Animals

Roman,

Altieri,

Breitburg

et al. 2024

Preprint

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Abstract. Anthropogenic warming and nutrient over-enrichment of our oceans have resulted in significant, and often catastrophic, reductions in dissolved oxygen (deoxygenation). Stress on water-breathing animals from this deoxygenation has been shown to occur at all levels of biological organization: cellular; organ; individual; species; population; community; and ecosystem. Most climate forecasts predict increases in ocean deoxygenation, thus it is essential to develop reliable biological indicators of oxygen stress that can be used by regional and global oxygen monitoring efforts to detect and assess the impacts of deoxygenation on ocean life. This review focuses on indicators of low-oxygen stress that are manifest at different levels of biological organization and at a variety of spatial and temporal scales. We compare particular attributes of these indicators to the dissolved oxygen threshold of response, time-scales of response, sensitive life stages and taxa, and the ability to scale the response to oxygen stress across levels of organization. Where there is available evidence, we discuss the interactions of other biological and abiotic stressors on the biological indicators of oxygen stress. We address the utility, confounding effects, and implementation of the biological indicators of oxygen stress for both research and societal applications. Our hope is that further refinement and dissemination of these oxygen stress indicators will provide more direct support for environmental managers, fisheries and mariculture scientists, conservation professionals, and policy makers to confront the challenges of ocean deoxygenation. An improved understanding of the sensitivity of different ocean species, communities and ecosystems to low oxygen stress will empower efforts to design monitoring programs, assess ecosystem health, develop management guidelines, track conditions, and detect low-oxygen events.

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“…Environmental factors have the potential to influence olfactory responses 9 , with temperature arguably one of the main environmental variables influencing the performance of fish 10 , 11 including effects on olfactory triggered feeding 12 . Global warming, which is happening at an unprecedented rate in aquatic environments 13 , 14 , may therefore alter crucial processes in fish, including olfactory and behavioural responses.…”

Section: Introductionmentioning

confidence: 99%

Warming affects routine swimming activity and novel odour response in larval zebrafish

Sourisse,

Bonzi,

Semmelhack

et al. 2023

Sci Rep

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Temperature is a primary factor affecting the physiology of ectothermic animals and global warming of water bodies may therefore impact aquatic life. Understanding the effects of near-future predicted temperature changes on the behaviour and underlying molecular mechanisms of aquatic animals is of particular importance, since behaviour mediates survival. In this study, we investigate the effects of developmental temperature on locomotory behaviour and olfactory learning in the zebrafish, Danio rerio. We exposed zebrafish from embryonic stage to either control (28 °C) or elevated temperature (30 °C) for seven days. Overall, warming reduced routine swimming activity and caused upregulation of metabolism and neuron development genes. When exposed to olfactory cues, namely catfish cue, a non-alarming but novel odour, and conspecifics alarming cue, warming differently affected the larvae response to the two cues. An increase in locomotory activity and a large transcriptional reprogramming was observed at elevated temperature in response to novel odour, with upregulation of cell signalling, neuron development and neuron functioning genes. As this response was coupled with the downregulation of genes involved in protein translation and ATP metabolism, novel odour recognition in future-predicted thermal conditions would require energetic trade-offs between expensive baseline processes and responsive functions. To evaluate their learning abilities at both temperatures, larvae were conditioned with a mixture of conspecifics alarm cue and catfish cue. Regardless of temperature, no behavioural nor gene expression changes were detected, reinforcing our findings that warming mainly affects zebrafish molecular response to novel odours. Overall, our results show that future thermal conditions will likely impact developing stages, causing trade-offs following novel olfactory detection in the environment.

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Invited review - the effects of anthropogenic abiotic stressors on the sensory systems of fishes

Cited by 10 publications

References 95 publications

The effects of environmental changes on the endocrine regulation of feeding in fishes

The effects of environmental changes on the endocrine regulation of feeding in fishes

Reviews and syntheses: Biological Indicators of Oxygen Stress in Water Breathing Animals

Warming affects routine swimming activity and novel odour response in larval zebrafish

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