قره برون و چاكباش در سواحل جنوب شرقي درياي خزر JUVENILE بررسي شيوع آلودگيهاي انگلي پرياخته اي ماهيان خاورياي نورس

The prevalance of metazoan parasites of juvenile Acipenser persicus and Acipenser guldenstaedti from Southeast of Caspian Sea

A survey has been conducted on the metazoan parasitic infections of juvenile sturgeons in southeast of Caspian Sea during 1997-1999. 239 specimens were obtained from beach seines in Miankaleh Peninsula and Gorgan - rud estuary. Ten and eight parasite species were recovered from 126 juvenile A. persicus and 113 juvenile A. guldenstaedti respectively. Anisakis larvae with 19.8% and 13.3% had the highest prevalance of various parasites were observed in A. persicus and A. guldenstaedti respectively, too. Age and diet of samples determined. Prevalance, frequency, range, intensity and dominant of parasites were determined. Effects of seasons on parasitic infections and parasitic infection in different ages of fishes were studied. The result of this study was compared with results of other investigators in other parts of Caspian Sea.