Identifikasi dan Intensitas Rocinela sp. Pada Ikan Kerapu di Pantai Kedonganan, Jimbaran, Bali

Abstract This research was aims to determine the intensity level of Rocinela sp. in groupers. Grouper fish samples were taken from Kedonganan Beach, Jimbaran, Bali. Grouper fish is a type of fish that lives around coral reefs, that have a high economic value. Grouper fish sampling was done by randomly method, so that the length and weight of the grouper samples used will be more diverse. The parasites in 40 fish samples at the Fisheries Laboratory, Faculty of Marine and Fisheries, Udayana University. The type of parasite found in grouper was Rocinela sp. This parasite belongs to the order of Isopoda which is a type of ectoparasite that infects the outside of a fish's body, such as the gills, mouth, eyes, and operculum. Ectoparasites can cause damage and impaired function in the infected organ. The results of the study found Rocinel sp. in 26 fish sampled with a total number of parasites of 28 individuals. Most of these parasites were found in the gills with a percentage of 92.6% and some were found in the operculum with a percentage of 7.4%. The intensity value of parasitic Rocinela sp. that is 1,067, this value indicates infection intensity of Rocinela sp. is low in grouper fish at Kedonganan Beach, Jimbaran, Bali. Keywords: Ectoparasite; Grouper; Intensity; Isopoda; Kedonganan Beach; Rocinela sp