Oct 31, 1998

Spontaneous larval Gnathostoma nipponicum infection in frogs

The Journal of Veterinary Medical Science
T OyamadaN Suzuki


From June 1993 to September 1997, a survey was carried out for the prevalence of larval Gnathostoma nipponicum infection in several kinds of frogs, toads, and their tadpoles collected from an endemic area of this nematode in Aomori Prefecture. Two frog species, one of 436 (0.2%) Rana nigromaculata and 51 of 147 (34.7%) R. catesbeiana were infected, and a total of 446 advanced third-stage larvae (AdL3) of G. nipponicum were recovered. These results confirmed that two frog species which can serve as the second intermediate and/or paratenic hosts in the life cycle of G. nipponicum exist in nature. This report is the first record of spontaneous infection of frogs with AdL3 of G. nipponicum.

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Mentioned in this Paper

Host-Parasite Interactions
Caenorhabditis elegans
Pelophylax nigromaculatus
Rats, Wistar
Rana catesbeiana
Spirurida Infections

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