Prevalence and Intensity of Ectoparasites on Cultivated Catfish (Clarias sp.) in Aquaculture Ponds and Bioflocs System in Aceh Besar, Indonesia.

Abstract

The purpose of this research is to determine the intensity and the prevalence of ectoparasites found in catfish biofloc aquaculture ponds and traditional catfish in Aceh Besar. The research was conducted at the Fish Quarantine Agency for Quality Control and Safety of Fishery Products (BPKIPM) Blang Bintang. This research used a descriptive method while the catfish samples were taken using a random sampling method. The sample of catfish is 100 samples which are devided into 50 catfish with biofloc system and 50 catfish using the traditional system. The organs observed in catfish are fins (back, chest, tail, anal, stomach), gills, and mucus. The results of this study indicate that there were 3 types of ectoparasites have been identified, Vorticella sp., Trichodina sp., and Dactylogyrus sp. The highest prevalence rate is infection parasite by Dactylogyrus sp. in Leubok village, Aceh Besar which use a traditional system, and it is categorized as “always” or “very severe infection” (100%) while for the biofloc system in the village of Reukih Dayah, Indrapuri, Aceh Besar it is categorized as “moderate or “moderate infection”(88%). For the lowest prevalence rate in ectoparasites is Vorticella sp. It is found in biofloc ponds and categorized as “rare” infections about (2%). The highest level of parasite intensity is infection with Dactylogyrus sp. Both media are categorized as “medium”. The differences in the intensity value of the two media are biofloc media has an intensity of 22.7 meanwhile the traditional has 11.3.