Ectoparasites and vibrios associated with fattening cultured mud crabs [scylla serrata (Forsskal,1775)] from pemalang coast,Indonesia

Infectious of ectoparasites and vibrios were found as a problem in fattening mud crab. the aims of this study were to determine the clinical sign of infected mud crabs and to identify the ectoparasites and generic vibrio in the fattening mud crabs from pemalang coast,indonesia. ectoparasites were collected by smear method. whereas,20 isolates were collected from hepatopancreas,gills,hemolymph and injured carapace of the mud crabs. thiosulphate citrate bile salt sucrose (tcbs) medium was used to isolate suspected vibrios. the clinical signs of mud crabs infected by ectoparasites were shown through the damaged gills and the attachment of other organisms on the gills,whereas the clinical signs of mud crabs infected by vibriosis were shown through red spot on carapace and wound in carapace,claw and abdomen,followed by weak condition. it also indicated that seven ectoparasites were ichthyobodo sp.,epistylis sp.,carchesium sp.,vorticela sp.,octolasmis sp.,lepeophtherius sp,and copepodit sp.,whilst five vibrios were v. harveyi,v. cholerae,v. parahaemolyticus,v. alginolyticus and v. fischeri. © 2016 penerbit utm press. all rights reserved.