The correlation between ectoparasite infestation and total Vibrio parahaemolyticus bacteria in Pacific white shrimp (Litopenaeus vannamei) in Super Intensive Ponds

Abstract

This study aimed to determine the type, intensity, degree of ectoparasite infestation and its correlation to the total V. parahaemolyticus bacteria in super-intensive pacific white shrimp culture. In this study, sampling was carried out in 3 super-intensive pacific white shrimp pond areas spread out in East Java, namely Bangil, Tuban, and Lamongan with 50 shrimps (PL30-PL 40). The obtained data underwent regression and correlation analysis. Based on the results, there were three types of ectoparasites, namely Zoothamnium sp., Epistylis sp. and Vorticella sp. High ectoparasite intensity was found in pacific white shrimp from Lamongan and Tuban ponds, namely 76 and 55 individuals/shrimp, respectively, showing the heavy infestation. High total V. parahaemolyticus bacteria was found in Tuban (1.16 × 105 CFU/gr) and Lamongan (1.16 × 105 CFU / gr) ponds. Based on the results, the coefficient value was R = 0.807 showing positive correlation of V. parahaemolyticus with the increasing parasite intensity and low oxygen levels.