Occurrence and intensity of parasites from Tench (Tinca tinca L.,1785) in Amirkelayeh wetland of Lahijan

Parasite infection of 165 specimens of Tench (Tinca tinca) surveyed in Amirkelayeh wetland in the years of 2001 – 2002. According to the results, 8 species of parasites recognized, including: Raphidascaris acus (prevalence = 5.71%, mean intensity = 2.5); Camallanus lacustris (P = 1.9, mi = 1); Asymphelodora tincae (p = 18.09 %, mi = 16.37), Diplostomum spathaceum (P = 4.76 %, mi = 1.2); Dactylogyrus sp. (P = 0.95 %, mi = 20); Caryophyllaeus fimbericeps (P = 0.95 %, mi = 35); Learnaea sp (P = 25.7 %, mi= 8.63) and Trcodina sp. (P = 0.95 %, mi = 4). There species of Camallanus lacustris, Caryophyllaeus fimbericeps and lernaea sp. are reported in Tench for the first time from Iran.