Site-specificity study of monogenean gill parasite in pond culture fish of ikan patin buah (Pangasius nasutus) at Pusat Pengembangan akuakultur Perlok Jerantut, Pahang

Abstract

From August to September 2008, 30 fishes of Pangasius nasutus (lkan Patin Buah) were collected from the pond culture farm, number BS at Pusat Pengembangan Akuakultur (PPA), Perlok Jerantut Pahang. The fish was used to identify the monogenean gill parasite infecting the gill of Pangasius nasutus (Ikan Patin Buah) in freshwater pond culture in Perlok according to their specific characteristic because monogenea often cause many problems in aquaculture practice all over the world. Monogenean can become a serious threat when fish are crowded together, as in hatcheries and farming operations like pond. This study was performed to determine the site specificity, prevalence,and mean intensity of monogenean in different size classes of Pangasius nasutus in freshwater pond cultures. The condition of the fish and water quality of the pond water were taken. Histological process was carried out to study the structure of the gill and to examine the structural changes on the gill because of the heavily infected by monogenea. Scanning Electron Microscope (SEM) was done to observe more clearly the specimen and the site attachment of the parasite on the gill. This project was conducted in Biodiversity Laboratory, Anatomy Physiology Laboratory and Histology Laboratory at Universiti Malaysia Terengganu