Korean J Parasitol.
2011 Dec;49(4):445-448. 10.3347/kjp.2011.49.4.445.
Discovery of Larval Gnathostoma nipponicum in Frogs and Snakes from Jeju-do (Province), Republic of Korea
- Affiliations
-
- 1Department of Veterinary Parasitology, Jeju National University College of Veterinary Medicine, Jeju 690-756, Korea.
- 2Department of Science Education, Jeju National University College of Education, Jeju 690-756, Korea.
- 3Division of Malaria and Parasitic Diseases, National Institute of Health, Centers for Disease Control and Prevention, Osong 363-951, Korea.
- 4Department of Parasitology and Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-751, Korea. wmsohn@gnu.ac.kr
- KMID: 1715755
- DOI: http://doi.org/10.3347/kjp.2011.49.4.445
Abstract
- A survey was performed to find out the intermediate hosts of Gnathostoma nipponicum in Jeju-do (Province), the Republic of Korea. In August 2009 and 2010, a total of 82 tadpoles, 23 black-spotted pond frogs (Rana nigromaculata), 7 tiger keelback snakes (Rhabdophis tigrinus tigrinus), 6 red-tongue viper snakes (Agkistrodon ussuriensis), and 2 cat snakes (Elaphe dione) were collected in Jeju-do and examined by the pepsin-HCl digestion method. Total 5 gnathostome larvae were detected in 3 (50%) of 6 A. ussuriensis, 70 larvae in 3 of 7 (42.9%) R. tigrinus tigrinus, and 2 larvae in 2 of 82 (8.7%) frogs. No gnathostome larvae were detected in tadpoles and cat snakes. The larvae detected were a single species, and 2.17x0.22 mm in average size. They had characteristic head bulbs, muscular esophagus, and 4 cervical sacs. Three rows of hooklets were arranged in the head bulbs, and the number of hooklets in each row was 29, 33, and 36 posteriorly. All these characters were consistent with the advanced third-stage larvae of G. nipponicum. It has been first confirmed in Jeju-do that R. nigromaculata, A. ussuriensis, and R. tigrinus tigrinus play a role for intermediate and/or paratenic hosts for G. nipponicum.
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