occurrence of lernaea cyprinacea (crustacea: copepoda) in an endemic cyprinid fish, chondrostoma orientale bianco & banarescu, 1982 from the kor river basin, southwestern iran

occurrence of lernaea parasite in a narrow distributed endemic fish, chondrostoma orientale (oriental nase) restricted to the kor river basin, southwestern iran is reported. based on the obtained results, all three collected specimens (tl= 174-192mm, sl= 148-169mm) were infested with lernaea parasites which were attached to the base of dorsal, pectoral, caudal and pelvic fins and also body muscles. the prevalence and intensity of parasite was 100% and 10.3, respectively. due to effects of lernaea , a long term monitoring of the parasites and fishes in the kor river basin is highly recommended.