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Field survey on the freshwater snails in Cheju Province(Quelpart lsland), Korea: Especially on presence or not of Parafossarulus manchouricus
Suck Young Kang,In Kyu Loh,Yung Hoon Park,Byung Chan Kim and Too Bong Lim
Deparment of Internal Medicine and Institute of Endemic Diseases, College of Medicine, Seoul National Univerity, Korea.
Departmet of Parasitology, Medical General Laboratory, Republic of Korea Army.
Departmet of Internal Medicine, Cheju Provincial Hospital, Korea.
Cheju Provincial Sanitary Laboratory, Korea.
Abstract
The question of infectivity and prevalence of Clonorchis sinensis in Cheju province (Quelpart Island) was arisen to authors since the several surveys on the endemic diseases were performed in this island. Therefore, authors decided to solute this question. Then the survey on the possible second intermediate host of Clonorchis sinensis was performed and reported already with negative finding.
At present time, authors carried out the collection of all kinds of fresh-water snails through all areas of this island, to confirm the presence or not of Parafossarulus manchouricus, the only first intermediate host of Clonorchis sinensis in Korea . And the following results were obtained.
1) The fresh-water snails collected in the survey were Semisulcospira libertina Gould and Lymnaea ollula Gould.
2) Parafossarulus manchouricus Bourguigant was not collected in this island.
3) It is confirmed that the Clonorchis sinensis can not be prevalent in this island.
Figures
PI. 1 Semisulcospira libertina Goulld, collected in Cheju Province, Korea.
PI. 2 Lymnaea ollula Gould, collected in Cheju Province, Korea.
PI. 3 Parafossarulus manchouricus Bourguigant, not present in Cheju Province, Korea.
Tables
Table 1 Collection area and the amount of Semisulcospira libertina
Table 2 Collection area and the amount of Lymnea ollula
References
2.
Brooke MM, et al. US Armed Forces Med J 1956;7(5):708–714.