Kajian Ektoparasit pada Budidaya Ikan Kerapu Cantang (Epinephelus fuscoguttatus x E. lanceolatus) di Perairan Ringgung dan Durian, Pesawaran, Lampung : Identifikasi, Prevalensi, dan Intensitas

Abstract

 The study was conducted to evaluate the prevalence, intensity, and identification of ectoparasites in Cantang grouper in the waters of Ringgung and Durian, Pesawaran Regency, Lampung. Research method with random sampling in two locations of floating net cages in Lampung Bay at Ringgung and Durian waters. Sampling was done three times with a total of 30 fish at each location (10 fish each sampling). Ectoparasite observations were carried out at the Laboratory of Fish and Environmental Health, Main Center for Marine Aquaculture Fisheries of Lampung. The results showed there were 3 species of ectoparasites that infected cantang grouper in Ringgung and Durian waters, namely Pseudorhabdosynochus sp., Neobenedenia sp., and Brooklynella sp. Ectoparasites Pseudorhabdosynochus sp. had a prevalence value of 100% at location one, and ectoparasites Brooklynella sp. had an intensity value of 873 individuals at location two. The diversity index (H’) at location one is 0.18 and at location two is 0.10. The uniformity index (e) at location one is 0.27 and at location two was 0.09. The Dominance index (c) at location one 0.91 and location two 0.96. Based on these results, the highest prevalence value was in Pseudorhabdosynocus sp. and the highest intensity value was in Brooklynella sp.. The results also showed a co-infection of 30% in Cantang grouper samples from Ringgung waters. The gill organs were dominantly infected by Pseudorhabdosynocus sp., while the dominant slime was infected by Neobenedenia sp. and Brooklynella sp.