Volta

From personality to environmental risk: An (eco)toxicological perspective of behavior

Behavioral alterations in fish are increasingly used as sensitive endpoints in (eco)toxicology, providing insights into the effects of a wide range of newly developed chemicals/materials, environmental contaminants, and abiotic stressors on aquatic wildlife. Within this context, fish personality, defined as consistent interindividual differences in behavior across time and contexts, has been receiving increasing attention as a potential modulator of exposure, physiological sensitivity, and behavioral responses to environmental stressors, with potential population-level consequences. This review synthesizes current evidence linking fish personality to contaminant exposure and sensitivity. The experimental frameworks and behavioral assays used in ecotoxicological studies were critically evaluated, revealing limitations in standardization, repeatability, comparability, and ecological relevance. Overall, the review highlights how incorporating personality-based approaches can enhance the ecological realism …

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