Assessing the Influence of Salmon Farming through Total Lipids, Fatty Acids, and Trace Elements in the Liver and Muscle of Wild Saithe Pollachius virens

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Title: Assessing the Influence of Salmon Farming through Total Lipids, Fatty Acids, and Trace Elements in the Liver and Muscle of Wild Saithe Pollachius virens
Authors: Arechavala-Lopez, Pablo | Sæther, Bjørn-Steinar | Marhuenda Egea, Frutos Carlos | Sanchez-Jerez, Pablo | Uglem, Ingebrigt
Research Group/s: Biología Marina | Grupo de Fotoquímica y Electroquímica de Semiconductores (GFES)
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada | Universidad de Alicante. Departamento de Agroquímica y Bioquímica
Keywords: Saithe Pollachius virens | Salmon farming
Knowledge Area: Zoología | Bioquímica y Biología Molecular
Issue Date: 8-Apr-2015
Publisher: Taylor & Francis
Citation: Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science. 2015, 7(1): 59-67. doi:10.1080/19425120.2014.1001540
Abstract: Saithe Pollachius virens are attracted to uneaten salmon feed underneath cages at open-cage salmon farms in Norway. The aggregated Saithe have modified their feeding habits as they have switched from wild prey to uneaten food pellets, which could lead to physiological and biochemical changes in the Saithe. Variations in profiles of total lipids, fatty acids, and trace elements in Saithe liver and muscle were measured to evaluate the influence of fish feed from salmon farms on wild Saithe populations. Farm-aggregated Saithe had higher fat content in liver tissues than did individuals captured more than 25 km away from farms, but no clear differences were found in muscle tissues. High proportions of fatty acids of terrestrial origin, such as oleic, linoleic, and linolenic acids, in liver and muscle tissues of farm-aggregated Saithe reflected the presence of wild Saithe at farms. Accordingly, low proportions of arachidonic, eicosapentaenoic, and docosahexaenoic acids in Saithe tissues mirrored the feeding activity at farms. Variations in specific trace element signatures among fish groups also revealed the farming influence on wild Saithe. High levels of Fe, As, Se, Zn, and B in liver, but also As, B, Li, Hg, and Sr in muscle of Saithe captured away from farms indicated the absence of feeding at farms.
Sponsor: This study was part of the project “Evaluation of actions to promote sustainable coexistence between salmon culture and coastal fisheries – ProCoEx” funded by The Norwegian Seafood Research Fund (FHF). The study was also supported by the Norwegian Research Council through the EcoCoast project.
ISSN: 1942-5120
DOI: 10.1080/19425120.2014.1001540
Language: eng
Type: info:eu-repo/semantics/article
Rights: © P. Arechavala-Lopez, B.-S. Sæther, F. Marhuenda-Egea, P. Sanchez-Jerez, and I. Uglem. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Peer Review: si
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Appears in Collections:INV - BM - Artículos Científicos / Scientific Papers
INV - GFES - Artículos de Revistas

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