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Abstract
The present study extended from October 2005 till the end of September 2006. The study was carried out on 356 (76 smoked and 280 frozen) fish and were examined for the presence of the parasites. Also, it was observed that the collected fish hosts were six species, belonging to four families. The examined fish species were frozen herring fish iClupea harenguss, smoked herring fish( Clupea harengusi, silver smelt (Argentina si/us), horse mackerel (Trachurus mediterraneus), chub mackerel (Scomber japonicus), mackerel (Scomber scombrus) and sardine (Sardina
pilchardus).
The present study revealed that 245 (68.82%) out of 356 examined
fish were infected with different types of parasites. The total infection rate
of fishes by monogenetic trematodes, digenetic trematodes, nematodes,
Acanthocephala and Crustacea were 15.45%,17.98%,52.81%,6.74% and
1.12%, respectively.
Dealing with the susceptability of examined fish species to parasitic
infection. Herring fish iClupea tiarenguss was the most susceptible to
parasitic infection as the infection rate was (100% in frozen herring fis.
and 98.68% in smoked one) for different species of parasites, this was
followed by silver smelt (Argentina si/us) as the infection rate was
91.67%, then horse mackerel (Trachurus mediterraneus) as the infection
rate was 68.33%.
Chub mackerel (Scomber japonicus), Mackerel (Scomber
scombrus) were less susceptible to parasitic infection as the infection rate was 61.02% and 51.85%, respectively.