Saturday, 28 April 2012

Eight Species of Wild Fish Have Been Detected in Aquaculture Feed



ScienceDaily (Apr. 25, 2012) — Researchers from the University of Oviedo have for the first time analysed a DNA fragment from commercial feed for aquarium cichlids, aquaculture of salmon and marine fish in aquariums. The results show that in order to manufacture this feed, eight species of high trophic level fish have been used, some of them coming directly from extractive fisheries.

Aquaculture initially came as an ecological initiative to reduce pressure from fishing and to cover human food needs. However, a problem has emerged: consumers prefer carnivore species, like salmon and cod that require tons of high quality protein for their quick, optimum development.

"If these proteins are obtained from extractive fisheries, aquaculture stops being an alternative to over-fishing and starts contributing to it, turning it into a risk for natural marine ecosystems" Alba Ardura, lead author of the study published in 'Fisheries Research' and researcher in the department of Functional Biology at the University of Oviedo said.

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