Abstract:
The aim of study is to identify the Clinostomum sp.obtained from visceral organs of
Climbing perch (Trichogaster trichopterus) in Riau, Indonesia. In September 2010, Climbing
perch (Trichogaster trichopterus) in Riau, Indonesia were collected, identified and examined
for Clinostomum infection. Digenea, encysted metacercariae of Clinostomum were excysted
with a needle, fixed in 10% formalin solution for morphological examination. Some samples
were fixed with glutaraldehyde for SEM, and with ethanol absolute solution for molecular
analysis. The result showed that the metacercariae of Clinostomum sp. from Riau had a body
shaped like leaf. The surface of the body had not spinae. The anterior part was narrower than
posterior. Posterior end was round. Body length had size of 347.2 (298.6 to 395.8) μm, body
width of 127.2 (115.7 to 138.6) μm. Oral sucker small, terminal and had size of 16.2 (14,29
to 18,6) μm. Ventral sucker larger than oral sucker and had size of 63,6 μm. Clinostomum
sp. has similarities to Clinostomum phalacrocorasis based on molecular study. This research
was the first investigation of Clinostomum sp. in Climbing perch (Trichogaster trichopterus)
as second intermediate host found in Riau, Indonesia.
