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Gnathostomiasis in frog-eating snakes from Japan
1Department of Parasitology, Miyazaki Medical College, Japan.
Journal of Wildlife Diseases
|December 10, 1997
Summary
Gnathostoma doloresi infects swine and can cause larva migrans in humans. Snakes are important hosts, with small mammals potentially playing a larger role than frogs in the parasite's life cycle.
Area of Science:
- Veterinary parasitology
- Zoonotic disease research
- Wildlife ecology
Background:
- Gnathostoma doloresi is a parasite found in swine, with larvae capable of causing cutaneous larva migrans in humans.
- The parasite's life cycle involves various intermediate hosts, including amphibians, reptiles, and fish, before reaching definitive hosts.
Purpose of the Study:
- To investigate the prevalence of Gnathostoma doloresi larvae in snakes.
- To identify potential reservoir hosts for Gnathostoma doloresi in Japan.
- To understand the role of different prey items in the transmission of Gnathostoma doloresi to snakes.
Main Methods:
- Surveying the prevalence of Gnathostoma doloresi larvae in various snake species.
- Comparing infection rates between different snake feeding types (e.g., frog-eating vs. mammal-eating snakes).
Main Results:
- All examined snake species were infected with Gnathostoma doloresi larvae, indicating snakes are significant reservoir hosts.
- Prevalence was lower in frog-eating snakes compared to mammal-eating snakes.
- Small mammals may be more critical than frogs in the transmission to snakes.
Conclusions:
- Snakes serve as important reservoir hosts for Gnathostoma doloresi.
- Small mammals likely play a more significant role than amphibians in the parasite's life cycle in Japan.
- Further research into the transmission dynamics of Gnathostoma doloresi is warranted.
