Nematodenlarven in Heringen aus verschiedenen Fanggebieten

The prevalence of nematodes in herring from five different fishing grounds of the North Sea and west of Scotland were examined. The abundance of nematode larvae in the flesh of the North Sea herring was approximately twice as high and the abundance in the body cavity was more than 6 fold of the herring from fishing grounds west of Scotland. The worm burden in the flesh was not correlated to the length of the fishes but the worm burden of the body cavity tends to increase by length. The frequency distribution of the nematodes in the flesh and the influence of the catching season is also discussed.