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KMID : 0425120090470010025
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Parasites, Hosts and Diseases
2009 Volume.47 No. 1 p.25 ~ p.29
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Indochinamon ou (Crustacea: Potamidae) as a New Second Intermediate Host for Paragonimus harinasutai in Luang Prabang Province, Lao PDR
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Sohn Woon-Mok
Ryu Jae-Sook
Min Duk-Young
Song Hyun-Ouk
Rim Han-Jong
Youthanavanh Vonghachack
Daluny Bouakhasith
Virasack Banouvong
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Abstract
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Paragonimus harinasutai metacercariae were found in a species of freshwater crab, Indochinamon ou, collected in a small stream of Namback District, Luang Prabang Province, Lao PDR. Adult flukes were recovered after experimental infection of the metacercariae to dogs. Metacercariae were round or slightly elliptical, 0.666 × 0.626 mm in average size, and had a thin cyst wall of about 20 μm in thickness, a black excretory bladder, convoluted ceca, and some pinkish materials in the body. Adults were somewhat elongated, 95.2 × 36.5 mm in average size, covered with single-tipped tegumental spines, had a smaller oral sucker than the ventral sucker, a moderately branched ovary, and 5-6 lobulated testes. Eggs were ovoid and bilaterally symmetrical in shape, 79 × 45 μm in average size, and had a uniformly thickened shell. By the present study, it has been confirmed that I. ou is a new second intermediate host for P. harinasutai.
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KEYWORD
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Paragonimus harinasutai, Indochinamon ou, crab, new intermediate host, Luang Prabang, Lao PDR.
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