A study prevalence and mean intensity of trypanorhyncha cestodes in selar kuning (Selaroids leptolepis) from South China Sea

Abstract

Results of a study on Trypanorhynch cestodes of a commercial marine fish, Selar Kuning (Selaroides leptolepis) from South China Sea are presented. This study was conducted at Biodiversity laboratory, Universiti Malaysia Terengganu. A total of 40 samples were diagnosed for Trypanorhnych cestodes, while other endoparasites found were also recorded. Organs such as heart, liver and stomach, were cut and placed on the glass slide. Then the piece of the organs was pressed using cover slips to get a thin layer. After that, the observation was done under compound microscope. Worms present were collected and fixed in 70% alcohol for further procedure. Diagnosis process was started from 27 th August 2008 and finished on 22 ml December 2008. Out of 40 samples diagnosed, 34 samples (85%) showed the presence of parasites. The result of prevalence for Trypanorhnycha plerocercoids was 25%, where it is the second highest after the prevalence of Nematode, while the result of mean intensity was 1.3, the lowest mean intensity among four species of endoparasites found in Selar Kuning. Trypanorhnycha plerocercoids were successfully identified up to genus level: Mixonybelinia sp. All specimens studied belonged to the same genus.