Abstract
This study aimed to determine the prevalence and intensity of ectoparasites in pacific white shrimp (Litopenaeus vannamei) seeds in ponds and hatcheries. This research was carried out from May to June 2018. The examination of ectoparasites in the samples of pacific white shrimp seeds was carried out in the Laboratory of the Faculty of Fisheries and Marine, Universitas Airlangga, Surabaya. The research methods used included a survey and descriptive method. The results of the study were that there was the presence of the same two types of ectoparasites in the pacific white shrimp seeds in both locations, namely Zoothamnium sp. and Vorticella sp. The highest intensity and prevalence of ectoparasites found in the shrimp seeds from ponds was 100%, while the prevalence of pacific white shrimp ectoparasites from the hatchery was only 15%. The intensity of the ectoparasites that attacked the shrimp seeds in the pond was 81.9 ind/fish, while the intensity of the ectoparasite that attacked the shrimp seed from the hatchery was 2 ind/fish.
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