الفهرس | Only 14 pages are availabe for public view |
Abstract This study was carried out to detect the parasites affecting some marine fishes. Fish species collected were 100 Dicentrarchus labrax and 100 Scomberomorus commerson from Suez Canal water at Ismailia provinces. There was no pathognomonic signs in infested fishes samples except marbling of gills in fishes with gill monogenean infestations. Other signs and P.M. lesions were bulging of operculi, haemorrhages, abrasions on skin, abdominal distension and emaciation, pale liver, congesion and enlargement of stomach and intestine with enteritis in some cases. The highest infestation rate was in S. commerson (88%) followed by D. labrax (29%). The isolated parasites were monogenetic trematodes (Diplectanum sp and Microcotyle sp.), Digenetic trematodes (Prosorhynchus sp), crustacean parasite (Renocila sp.), nematodes (Hysterothylacium aduncum and Hysterothylacium sp), acanthocephala (Rhadinorhynchus sp) and cestode larvae (Tetraphyllidean larvae). Seasonal prevalence, relation between fish body weight and length and infestation, statistical analysis and histopathological picture were also recorded Key words : Marine fish ,parasites, Scomberomorus commerson, Dicentrarchus labrax |