Morphological study of Cichlidogyrus mbirizei (Ancyrocephalidae) monogenean gill parasite on red tilapia (Oreochromis sp.) from Como river Kenyir lake, Terengganu Malaysia

Abstract

Background and Objective: There were many cage-cultures at Como River, Kenyir lake and reported have fish diseases problem. Investigation was done and found that the fishes infected by monogenean parasite. Therefore, a study was conducted to identify the monogenean species infected the cage-culture fish, Oreochromis sp., from Como river, Kenyir lake. Methodology: The fishes were collected from floating net cage cultures. Monogenea were removed from the gills and mounted on a slide by using a drop of ammonium picrate-glycerin for the sclerotized structures and 10% of Sodium Dodecyl Sulfate (SDS) for the internal anatomy. They were observed under microscope (NIKON Eclipse 80i) and drawing was made with the aid of a lucida camera attached to compound microscope (Leica DM 750). Results: Cichlidogyrus mbirizei was found from the fish. The genus are based on their shape and size of the sclerotised parts of the copulatory organs. Conclusion: This is the first report about Cichlidogyrus mbirizei from cage culture of Oreochromis sp., from Kenyir lake.