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Anisakiasis hazard varies depending on the origin of the fish, according to a study
Date:11/10/2009

in those coming from the Mediterranean area (Alboran Sea), "apparently due to the presence of cetaceans", points out Valero. "This connection is especially obvious in the anchovies coming from the Ligurian Sea, where the presence of Anisakis and cetaceans is higher than in the rest of the areas studied", says Francisco Javier Adroher, other of the authors and researcher of the UGR. This involves a higher hazard for consumers, if they do not freeze fish.

Fish muscles, habitat of the larvae

Another factor that increases the probability of infection for the parasite is the migration of the larva to the fish muscle. According to the scientists, "the higher presence of the parasite in the muscle increases the risk of contracting anisakiasis with the consumption of pickled anchovies". The scientists of Granada have also proved that the presence of the parasite in fishes increases depending on the fish size. "As pickled anchovies are prepared with bigger ones, the risk also increases", adds Adroher.

Valero and his team point out that more studies are required to identify the marine areas with a higher presence of parasites which can affect human health. This way it will be possible to determine if the abundance of the parasite in certain areas varies with time, "which would allow to design and apply measures to limit human exposure to such parasites".


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Contact: Adela Valero
avalero@ugr.es
34-958-243-857
University of Granada
Source:Eurekalert  

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Anisakiasis hazard varies depending on the origin of the fish, according to a study
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