Indochinamon ou (Crustacea: Potamidae) as a New Second Intermediate Host for Paragonimus harinasutai in Luang Prabang Province, Lao PDR

• Published in: Korean journal of parasitology 2009-03, Vol.47 (1), p.25-29
• Main Authors: Sohn, W.M. (Gyeongsang National University College of Medicine, Jinju, Republic of Korea), Ryu, J.S. (Hanyang University College of Medicine, Seoul, Republic of Korea), Min, D.Y. (Hanyang University College of Medicine, Seoul, Republic of Korea), E-mail: [e-mail], Song, H.O. (Hanyang University College of Medicine, Seoul, Republic of Korea), Rim, H.J. (Korea Association of Health Promotion, Seoul, Republic of Korea), Vonghachack, Youthanavanh (National University of Laos, Vientiane, Lao PDR), Bouakhasith, Daluny (National University of Laos, Vientiane, Lao PDR), Banouvong, Virasack (Malaria Center, Luangprabang, Lao PDR)
• Format: Article
• Language: English
• Subjects: Animals; CANGREJO DE MAR; CRABE; CRABS; Crustacea - parasitology; Disease Reservoirs - parasitology; Dogs; Female; Host-Parasite Interactions; Humans; Indochinamon ou; LAO; LAOS; Luang Prabang; Male; new intermediate host; Original; Paragonimiasis - parasitology; Paragonimus - anatomy & histology; Paragonimus - isolation & purification; Paragonimus - ultrastructure; Paragonimus harinasutai; Shellfish - parasitology
• ISSN: 0023-4001; 1738-0006
• DOI: 10.3347/kjp.2009.47.1.25

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 ㎛ 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 ㎛ 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.