The impact of thermal effluents on fish

Miller, Stephen

doi:10.1007/bf00000415

Cited by 4 publications

(2 citation statements)

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Section: Consequences Of Natural and Anthropogenic Sources Of Cold Shockmentioning

confidence: 99%

“…The volume of heated effluent depends on maintenance schedules, mechanical reliability and the demand for power. In the event of a shutdown, temperature fluctuations downstream may be rapid and unpredictable, resulting in stressful conditions for aquatic organisms (Ash et al, 1974;Coutant & Talmadge, 1977;Miller, 1977;Talmage & Coutant, 1980). Anupkumar et al (2005) while mapping the thermal discharge from an electric power plant found that temperature increases were restricted to the surface 2 m of the water column.…”

Section: Anthropogenic Sourcesmentioning

confidence: 99%

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Cold shock and fish

Donaldson

Cooke

Patterson

et al. 2008

Journal of Fish Biology

335

292

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Rapid decreases in water temperature may result in a number of physiological, behavioural and fitness consequences for fishes termed 'cold shock'. Cold-shock stress occurs when a fish has been acclimated to a specific water temperature or range of temperatures and is subsequently exposed to a rapid decrease in temperature, resulting in a cascade of physiological and behavioural responses and, in some cases, death. Rapid temperature decreases may occur from either natural (e.g. thermocline temperature variation, seiches and storm events) or anthropogenic sources (e.g. varied thermal effluents from power generation and production industries). The magnitude, duration and frequency of the temperature change as well as the initial acclimation temperatures of individuals can influence the extent of the consequences of cold shock on fishes. Early research on cold shock focused on documenting mortality events associated with cold shock. However, in recent years, a shift in research has occurred where the focus of cold-shock studies now involves characterizing the sublethal effects of cold shock in terms of the stress response in fishes. This shift has revealed that cold shock can actually be used as a tool for fisheries science (e.g. to induce polyploidy). The cold-shock stress response offers opportunities to develop many exciting research questions, yet to date, cold-shock research has been largely unfocused. Few studies attempt to link laboratory physiology experiments with ecologically relevant field data on behaviour, growth, bioenergetics and fitness. Additional research will allow for the development of more focused and robust management policies and conservation initiatives. This review synthesizes the sublethal physiological and behavioural consequences of cold-shock stress on fishes, identifies natural and anthropogenic sources of cold shock, discusses the benefits of cold shock to fisheries science and describes mitigation and management efforts. Existing knowledge gaps and opportunities for future cold-shock research are presented.

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Section: Consequences Of Natural and Anthropogenic Sources Of Cold Shockmentioning

confidence: 99%

Section: Anthropogenic Sourcesmentioning

confidence: 99%