Identification and prevalence of ectoparasites on the fry of Asian sea bass (Lates calcalifer), white shrimp (Litopenaeus vannamei), and blue swimming crab (Portunus pelagicus)

Abstract

Abstract The study aims to find out the types of ectoparasites infected in the fry of Asian Sea Bass (Lates calcalifer), White Shrimp (Litopenaeus vannamei), and Blue Swimming Crab (Portunus pelagicus), and to know their prevalence. The method used in this study is an examination of fish samples using the wet mount method. The results showed that the parasites found in the fry of Asian Sea Bass were Trichodina sp., Caligus sp., and Dactylogyrus sp., with the prevalence, were 18.85%, 3.28%, and 1.64% respectively. While, the parasites of Vorticella sp., Epistylis sp and Zoothamnium sp. infected on white shrimp with the prevalence respectively were 2.71%, 0.84%, and 0.17%. Furthermore, on the blue swimming crab was found parasite of Vorticella sp. with the prevalence was 16.47% and Epistylis sp. with the prevalence value was 12.54%.