Worms in Fish
نویسنده
چکیده
The presence of nematode or round worms in the flesh of marine fish has long been known and is perceived to be both an aesthetic and human health problem. The most abundant group are members of the genus Anisakis and within fish they are small, colourless worms which are found, often lightly coiled within the flesh or the viscera. Within the flesh they are often difficult to see with the naked eye. The life-cycle of the parasites is complex, as shown in Fig 1, but the main point is that the stage in the fish is a larva which will only mature if it is ingested by a cetacean (toothed whale, dolphin, porpoise) Once released in the cetacean stomach it attaches to the stomach wall and undergoes further development. When the adult stage is reached the parasite detaches from the stomach wall and lives free in the lumen feeding on the stomach contents.
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