Stress Physiology in Aquatic Animals

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Physiology and Biochemistry".

Deadline for manuscript submissions: 10 September 2025 | Viewed by 1398

Special Issue Editors


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Guest Editor
School of Marine Sciences, Ningbo University, Ningbo 315211, China
Interests: stress physiology; thermoregulation; neuroendocrine regulation; endocrine disrupting chemicals (EDCs); gene editing; fish

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Guest Editor
The Algarve Centre of Marine Sciences (CCMAR), University of Algarve, 8005-139 Faro, Portugal
Interests: mollusc immunity; shell formation; salinity regulation; endocrinology; stress physiology in mollusc; climate change and nanoplastic

Special Issue Information

Dear Colleagues,

Over the past few decades, the growing requirement for fish protein and the change in dietary habits have caused the explosive development of aquaculture crops (either vertebrate or invertebrate). However, the growth of aquaculture is limited by various environmental and husbandry-related stress. Stress is a pivotal factor influencing the survival, growth, immunity and reproduction of aquatic animal. Environmental changes can impose stress on aquatic organisms, subsequently triggering a cascade of molecular and physiological responses. Many of these induced responses are maintained in aquatic species as a consequence of environmental adaptation. Comprehensive research aimed at elucidating the evolution and functionality of such complex mechanisms will not only enhance our profound understanding of stress physiology but also holds significant implications for the optimization of selective breeding programs, environmental management in aquaculture involving fish and aquatic invertebrates, and the conservation efforts pertaining to global fisheries.

To gain a deeper understanding of the response mechanisms of organisms to environmental stress, it is essential to conduct physiological and cellular studies utilizing various aquatic animal models. This Special Issue emphasizes the physiological and molecular responses to both short-term and long-term biotic and abiotic stresses across a diverse array of vertebrate and invertebrate aquatic species. Submissions in the form of Original Research Articles, Reviews, and Mini-Reviews are encouraged.

Potential topics include, but are not limited to, the following: (1) physiological alterations and adaptation processes responding to various stresses; (2) changes in neuroendocrine regulatory systems in mediating responses to environmental stresses; (3) metabolic adaptations of aquatic animals under conditions of environmental stress; (4) omics analyses of aquatic species affected by environmental changes; (5) evolutionary dynamics of stress responses in aquatic animals; (6) immune reactions of aquatic organisms under various forms of environmental stress; (7) effects of environmental stresses on reproduction in aquatic species; (8) influence of ecological changes on the microbiota associated with aquatic animals.

Dr. Mingzhe Yuan
Dr. Maoxiao Peng
Guest Editors

Manuscript Submission Information

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Keywords

  • stress
  • aquatic animals
  • physiological and molecular response
  • environmental adaptation
  • omics analyses
  • neuroendocrine regulations
  • short-term and long-term stress

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Published Papers (2 papers)

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Research

18 pages, 4255 KiB  
Article
Sub-Lethal Effects of Predators in Aquaculture: Assessment of Chronic Exposure to Conspecific Alarm Substance on Feeding and Growth Performances of Nile Tilapia
by Rafaela Torres Pereira, Alexandre Luiz Arvigo, Caio Akira Miyai, Augusto Rysevas Silveira, Percília Cardoso Giaquinto, Helton Carlos Delicio, Leonardo José Gil Barcellos and Rodrigo Egydio Barreto
Fishes 2025, 10(4), 174; https://doi.org/10.3390/fishes10040174 - 12 Apr 2025
Viewed by 281
Abstract
In aquaculture practices, fish are mostly protected from lethal actions of predators. However, sub-lethal effects can be challenging to prevent, as they may be associated with chemical cues signaling predation risk that easily dissolve and spread in water, serving as potential stressors. These [...] Read more.
In aquaculture practices, fish are mostly protected from lethal actions of predators. However, sub-lethal effects can be challenging to prevent, as they may be associated with chemical cues signaling predation risk that easily dissolve and spread in water, serving as potential stressors. These cues originate from predators, stressed or injured prey releasing blood, a conspecific alarm substance (CAS), and/or other bodily fluids. In this study, we simulated a small-scale net cage system and assessed the feeding and growth of Nile tilapia exposed chronically to a CAS. Nile tilapia, an invasive species in many aquatic systems, frequently coexist freely alongside those cultivated in cages. Consequently, caged tilapia may regularly be exposed to a CAS, potentially leading to chronic stress and impacting growth and development. Fish were exposed daily to either a CAS or a control vehicle (distilled water) for 45 days (one fish per cage). Fish in both conditions exhibited similar increases in body mass, weight gain, and length over time and displayed an allometric negative growth profile, indicating that the CAS did not affect the length–weight relationship as well. Specific and relative growth rates, condition factor, body axes, food intake, and feeding conversion efficiency were also unaffected by the CAS over time. This body of evidence suggests that the CAS did not act as a chronic stressor for caged Nile tilapia and a possible explanation is habituation. Full article
(This article belongs to the Special Issue Stress Physiology in Aquatic Animals)
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14 pages, 2008 KiB  
Article
The Impact of Rutin on Heat Stress Response of Hybrid Fish (Carassius auratus cuvieri ♀ × Carassius auratus Red var. ♂)
by Shuailin Chen, Die Li, Xiaojuan Cui, Jia Xu, Yujing Li and Yuandong Sun
Fishes 2024, 9(12), 509; https://doi.org/10.3390/fishes9120509 - 13 Dec 2024
Cited by 1 | Viewed by 772
Abstract
Heat stress is a major environmental stressor that affects fish metabolism, growth, and death rates. This research examined the impact of dietary rutin addition (0, 100, 300, or 500 mg/kg) for 60 days on juvenile hybrid fish (Carassius auratus cuvieri, WCC, [...] Read more.
Heat stress is a major environmental stressor that affects fish metabolism, growth, and death rates. This research examined the impact of dietary rutin addition (0, 100, 300, or 500 mg/kg) for 60 days on juvenile hybrid fish (Carassius auratus cuvieri, WCC, ♀ × Carassius auratus red var, RCC, ♂, WR) (27.97 ± 0.56 g) under heat stress conditions (32 ± 1 °C for 48 h). The analysis focused on blood parameters, oxidative stress biomarkers, and hepatic hsp70 and hsp90 gene expression in WR. The results demonstrated that rutin supplementation elevated blood glucose levels and the liver activities of glutathione reductase, glutathione peroxidase, catalase, and total superoxide dismutase in comparison to the control group. Additionally, rutin supplementation also significantly reduced serum cortisol and hepatic malondialdehyde levels while upregulating hepatic hsp70 and hsp90 gene expression. These findings suggest that rutin supplementation enhances antioxidant responses and alleviates the impact of heat stress on fish physiological and biochemical markers and heat shock protein gene expression. Full article
(This article belongs to the Special Issue Stress Physiology in Aquatic Animals)
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