INTENSITY AND PREVALENCE OF PARASITES IN TILAPIA OREOCHROMIS NILOTICUS IN FRESHWATER AQUACULTURE PONDS IN KARANGPLOSO, MALANG REGENCY, EAST JAVA, INDONESIAAyu Winna Ramadhani and R. Adharyan IslamyAbstract Parasitic infection in aquaculture can lead to primary infection due to decreased immunity of fish, making it easier for other microorganisms, both bacteria and viruses, to enter the fishâs body. This study aims to determine and analyze the prevalence and intensity of parasites found in the freshwater aquaculture ponds of fish cultivator groups in Karangploso District, Malang Regency. This study used the scraping method by analyzing gills, mucus from the skin, fins and digestive tract on a glass object which was then observed microscopically using a light microscope with a 40x magnification. The results showed that there were 6 types of parasites from the ectoparasite group consisting of Trichodina, Tetrahymena, Gyrodactylus, Dinoflagelata, Epistylis and Dactylogyrus. There were no parasites from the endoparasites and hematozoa groups. The highest prevalence was Dactylogyrus with a prevalence rate of 54% and the lowest was Dinoflagella with a prevalence rate of 10%. The highest and lowest parasite intensity is Epistylis. (18.0 ind / infected fish) and Dactylogyrus (2.8 ind /infected fish), respectively. It can be concluded that the level of parasite infection in the fish farm groups is at a low level based on William and Bunkleyâs prevalence criteria. |