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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Monitoring the influence of marine aquaculture on wild fish communities: benefits and limitations of fatty acid profiles
Author(s): Fernandez-Jover, Damian
Arechavala-Lopez, Pablo
Martinez-Rubio, Laura
Tocher, Douglas R
Bayle-Sempere, Just T
Lopez-Jimenez, Jose Angel
Martinez-Lopez, Francisco Javier
Sanchez-Jerez, Pablo
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Keywords: Fish farms
Trophic marker
Vegetable oils
Marine resources
Fish assemblages
Issue Date: Sep-2011
Citation: Fernandez-Jover D, Arechavala-Lopez P, Martinez-Rubio L, Tocher DR, Bayle-Sempere JT, Lopez-Jimenez JA, Martinez-Lopez FJ & Sanchez-Jerez P (2011) Monitoring the influence of marine aquaculture on wild fish communities: benefits and limitations of fatty acid profiles, Aquaculture Environment Interactions, 2 (1), pp. 39-47.
Abstract: Fatty acids (FA) have been applied as indicators of the influence of coastal sea-cage fish farming on wild fish communities in several recent scientific publications. Due to the relatively high conservation of FA composition throughout the food web, they are useful for characterizing trophic relationships. The increasing utilization of vegetable or alternative animal oils in the production of aquafeeds results in cultivated fish exhibiting higher levels of terrestrial FAs in their tissues. As previously reported, wild fish ubiquitously aggregate around fish farms as a consequence of the introduction of new habitat and the easy availability of food—fish farms act as enhanced fish aggregation devices (FADs). The influence of food pellets on the composition of wild fish has been detected in recent studies on salmon, sea bass and sea bream aquaculture, with increased levels of linoleic acid (18:2n-6) and a low n-3/n-6 ratio as clear indicators of the consumption of food pellets from the farms. The potential ecological and physiological effects on wild fish are presently unknown. In the present article, guidelines are proposed for the investigation and use of terrestrial FAs to track the effects of coastal aquaculture on wild fish communities and local fisheries, as well as the benefits or limitations of this technique.
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Rights: Open Access article available from:; Published in Aquaculture Environment Interactions by Inter-Research

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