Infestation status of <i>Paragonimus westermani</i> metacercariae in the second intermediate host in Ulchin county, Kyungpook Province

Original Article


Korean J Parasitol. 1986 Dec;24(2):194-200. English. Published online Mar 20, 1994. http://dx.doi.org/10.3347/kjp.1986.24.2.194
Copyright © 1986 by The Korean Society for Parasitology


Infestation status of Paragonimus westermani metacercariae in the second intermediate host in Ulchin county, Kyungpook Province
Young Ae Hong,Chong Yoon Joo and Young Sik Pyun^**
Department of Parasitology and Orthopaedic Surgery^**, Keimyung University,School of Medicine, Taegu, Korea.


Abstract
A study on the population density of crayfish intermediate hosts and infestation status of crayfish with encysted larvae of Paragonimus westermani in Ulchin county, Kyungpook province, Korea was conducted from May to October in 1986. The population density of the crayfish ranged from 1 to 13, with an average of 4 per manhour. Among the six habitats, Ducheon had a somewhat higher density than that of the others. Of eight hundred and seventeen crayfish examined, 127 or 15.5 per cent harboured the metacercarial larvae of Paragonimus westermani. The majority of the larvae were found in three parts of the body: most frequently in the cephalothorax, next in the gills, and then in the liver. The average number of metacercarial larvae per infected crayfish ranged from 1.0 to 1.9, with an average of 1.7. Summarizing the results, this study indicates that the population density of crayfish intermediate host and infestation rates for the crayfish with encysted larvae of Paragonimus westermani in Ulchin county of Kyungpook province is relatively high.

Tables


	Table 1 Population density of crayfish in six localities un Ulchin county, Kyungpllk Province, Korea (1986), together with environmental conditions


	Table 2 Infestation rates from Paragonimus metacercaria from crayfish in Ulchin county, Kyungpook Province, Korea(1986)


	Table 3 Demonstration rates of encysted larvae of P. westermani from the body parts of infected crayfish(1986)


	Table 4 Numerical distribution of P. westermani from metacercariae in the body parts of crayfish(1986)


	Table 5 The reported infestation rates of crayfish intermediated hosts with Paragonimus metacercariae in Korea

References


1.	Ahn YK, et al. New Med 1966;9:1.

2.	Choi DW, Hwang JT. Epidemiological study of Paragonimus westermani in Wiseong County, Kyungpook Province, Korea. Korean J Parasitol 1980;18(2):229–234.

3.	Choi DW, et al. Kyungpook Univ Med J 1981;22:185–189.

4.	Choi DW, et al. Kyungpook Univ Med J 1983;24:1–9.

5.	Cheon HB. Younsei J Med Sci 1970;3:174–186.

6.	Ichinomyia K. Mansen Med J 1924;37:17–32.

7.	Joo CY, Ahn SH, Park YC. Epidemiological survey of Paragonimus westermani in Ulchin County, Kyungpook Province, Korea. Korean J Parasitol 1985;23(1):102–110.

8.	Kim JH, et al. Kyungpook Univ Med J 1977;18:166–171.

9.	Kim YM, et al. Kyungpook Univ Med J 1974;15:165–174.

*10.*	Kobayashi H. Trop Med Tr VI Bien Cong Tokyo 1926;1:413–417.

*11.*	Lee DM, et al. New Med J 1979;22:1179–1182.

*12.*	Lee JS, et al. Korean Rural Med 1979;4:71–80.

*13.*	Lee WS, et a. Kyungpook Univ Med J 1984;25:148–152.

*14.*	Park CM, et al. J Korean Ped Assoc 1961;4:115–125.

*15.*	Park SD, et al. Kyungpook Univ Med J 1974;5:117–127.

*16.*	Park GH, et al. Kyungpook Univ Med J 1984;25:158–162.

*17.*	Rim HJ, Lee JS, Chung HS, Hyun I, Jung KH. [Epidemiological survey on paragonimiasis in Kang Hwa Gun]. Korean J Parasitol 1975;13(2):139–151.

*18.*	Shon YW, Choi DW. Endemic foci of Paragonimus westermani in Chilgok, Kyungpook Province, Korea. Korean J Parasitol 1977;15(2):133–138.