Does a diet including pellets from salmon cage farms affect the taste of wild saithe (Pollachius virens Linnaeus, 1758)?

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Title: Does a diet including pellets from salmon cage farms affect the taste of wild saithe (Pollachius virens Linnaeus, 1758)?
Authors: Uglem, Ingebrigt | Ulvan, Eva M. | Toledo-Guedes, Kilian | Hegstad, Erlend | Blakstad, Steffen | Buserud, Bjørnar | Sæther, Bjørn-Steinar
Research Group/s: Biología Marina
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada
Keywords: Salmon cage farms | Pellets | Wild saithe
Knowledge Area: Zoología
Issue Date: Jun-2017
Publisher: Wiley
Citation: Journal of Applied Ichthyology. 2017, 33(3): 374-376. doi:10.1111/jai.13261
Abstract: The attraction of wild fish to net cage fish farms due to uneaten fish feed pellets that have fallen through the cages as waste feed, is a global phenomenon (Uglem, Karlsen, Sanchez-Jerez, & Sæther, 2014). The amount of feed not eaten by the farmed fish can reach up to 5% of the total amount in Norwegian salmon farming (Otterå, Karlsen, Slinde, & Olsen, 2009; Svåsand et al., 2015). This suggests that thousands of tonnes of waste feed are available to wild fish aggregating around these salmon farms. Farm-associated (FA) wild fish that have eaten a diet consisting partially of salmon feed are significantly fatter, with higher concentrations of terrestrial-derived fatty acids and lower concentrations of DHA in the muscle and liver than in unassociated (UA) fish (Dempster et al., 2011; Fernandez-Jover et al., 2011). Fish nutrition can influence the taste of the fish, either by variation in the biochemical composition of the tissues or by reducing the shelf life (Lie, 2001). Fishermen, fishmongers and consumers in Norway during the last couple of decades have reported that the taste of FA saithe (Pollachius virens) is inferior compared to UA fish (Uglem et al., 2014). The purpose of this study was to make taste comparisons of dishes made of either FA or UA saithe caught and processed using standardized means, by carrying out two simple consumer tests.
Sponsor: This study was funded by the Norwegian Seafood Research Fund through the ProCoEx project (Project number: 900772) and the Norwegian Research Council through the project “ECOCOAST”. Kilian Toledo-Guedes was supported by a grant from Iceland, Liechtenstein and Norway through the EEA Financial Mechanism, operated by Universidad Complutense de Madrid.
URI: http://hdl.handle.net/10045/66489
ISSN: 0175-8659 (Print) | 1439-0426 (Online)
DOI: 10.1111/jai.13261
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2017 Blackwell Verlag GmbH
Peer Review: si
Publisher version: http://dx.doi.org/10.1111/jai.13261
Appears in Collections:INV - BM - Artículos Científicos / Scientific Papers

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