SECONDARY INTERMEDIATE HOSPES OF CLINOSTOMUM (TREMATODA DIGENEA) IN RIAU PROVINCE, INDONESIA
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Date
2013-05-30
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Abstract
The aim of study was to understand the morphology of metacercariae of Clinostomum sp.
found in freshwater fishes in Riau, Indonesia as second intermediate hospes. Freshwater fish were
collected from Sail River, identified and examined for morphological observation. Encysted
metacercariae of Clinostomum were excysted with a needle, fixed in 10% formalin and stained with
Semichon’s Acetocarmine. Clinostomum parasites were observed under a stereomicroscope and
numbers recorded. The result showed that infected freshwater fish were identified as Trichogaster
trichopterus and prevalence of Clinostomum infection to the fish was17,1%. The infected fish had
total length between 5,6-11cm, while the weight range was 2,01-28,64 g. The cysts were 1,5-2 mm in
diameter, with a thin (c. 0,9 μm wide). There was no spinae in tegument dan had 2 suckers (oral and
ventral), posteriorly located genitalia and paired digestive caeca. This digeneans were identified as the
metacercariae of Clinostomum sp. This research is the first case of Clinostomum in freshwater fish in
Riau, Indonesia.
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Keywords
Morphology, Trichogaster trichopterus, metacercariae Clinostomum, Riau