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Studies on some digenetic trematodes paraisitising some groupers fish in Jeddah area (Red Sea Coast, Saudi Arabia)

Omyma A. M. Maghrabi  and Waleed Y. Gharabawi*

Biology Department,  Faculty of Applied Sciences, Umm Al Qura University, Macca,

Saudi Arabia

* Marine Biology Department, Faculty of Marine Sciences, King Abdulaziz University, Jeddah, Saudi Arabia

                       ABSTRACT

The present study includes description of three species related to three different families of digenetic trematodes. These species were extracted from the digenetic tracts (stomach, pyloric caeca and gut) of two species of the most commercial fish in the studied area (Epinephelus fuscoguttatus and E. tauvina). All fish samples were collected from Jeddah coast (Saudi Arabia, Red Sea), during the period from January to December 2006. In this study, 114 fish specimens were investigated searching for trematodes. The extracted endoparasites were flattened, fixed and prepared for further study. These digenetic trematodes were Cainocreadium epinepheli, Erilepturus hamati and Prosorhynchus jupe. Identification and full description of these trematodes were given using both light and scanning electron microscopy. The using of SEM in this study has revealed with precision a number  of surface structures in such details. Comparisons between these parasites and the related forms were reported. The highest infection of such trematodes was detected in E. fuscoguttatus (21.43 %) and it was 20.69 % in E. tauvina. The prevalence of infection was seen to be high during spring and autumn, with slightly decrease during summer and winter.  

Key words: Epinephelus, digenetic trematodes, endoparasites ultrastructure, Red Sea, Jeddah