1. Graduate School of Agriculture, Meijo University, Nagoya, Japan
2. Institute for Mountain Science, Shinshu University, Kamiina County, Japan
3. Present address: JSPS, Laboratory of Environmental Zoology, Faculty of Agriculture, Meijo University, Nagoya, Japan
4. Forum for Environmental Symbiosis in Shirakawa-Go, Ono-gun, Japan
5. Laboratory of Environmental Zoology, Faculty of Agriculture, Meijo University, Nagoya, Japan