Food consumption rates of piscivorous brown trout (Salmo trutta) foraging on contrasting coregonid prey. (29th June 2015)

• Record Type: Journal Article
• Authors: Jensen, H.; Kahilainen, K. K.; Vinni, M.; Gjelland, K. Ø.; Malinen, T.; Harrod, C.; Amundsen, P.‐A.
• Is Part Of: Fisheries management and ecology. Volume 22:Number 4(2015:Aug.)
• Page Start: 295
• Page End: 306
• Publication Date: 2015-06-29
• Subjects: Fishery management -- Periodicals; Fishes -- Ecology -- Periodicals; Fishes -- Conservation -- Periodicals; 639.2
• DOI: 10.1111/fme.12126
• Languages: English
• ISSNs: 0969-997X

Abstract

<abstract abstract-type="main" id="fme12126-abs-0001"> <title>Abstract</title> <p>Knowledge of predator–prey dynamics is essential to understand ecosystem functioning. Quantification of such interactions is important for fisheries management, in particular in the case of stocking programmes. Here, food consumption rates (<italic>FCR</italic>) were quantified for wild and stocked piscivorous brown trout, <italic>Salmo trutta</italic> L., in three subarctic lakes with contrasting coregonid (<italic>Coregonus</italic> spp.) prey communities, using the Wisconsin and the Elliott–Hurley bioenergetic models. <italic>FCR</italic> was highest for stocked brown trout in lakes with the lowest predator densities, and lowest for wild brown trout. Although FCR estimate may vary somewhat depending on the specific model used, such tools are imperative for the proper impact assessment of brown trout stocking programmes and for the provision of advice on optimal stocking densities.</p> </abstract>