Helminth Parasites of Fish of the Kazakhstan Sector of the Caspian Sea and Associated Drainage Basin.

The northern section of the Caspian Sea is an important fishery for Kazakhstan. In the present study, a total of 606 individuals of 13 fish species were collected. For each of , , , , , , , , , , , and 50 individuals were examined whilst 6 individuals of were examined. The nematode parasite was found in all fish species except , and at intensities ranging from 1 to 1197 parasites per infected fish. Trematodes of family Diplostomidae were also isolated from all fish except and at intensities ranging from 1 to 242 parasites per infected fish. Other parasites found included the nematodes sp and the cestodes the monogenean parasites and and the crustacean parasites . and . In addition one unidentified species of nematode and a bivalve of the genus was recovered from . There was no association between Fulton's condition index and intensity of parasite infection.