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Elaphe climacphora

Basic information
Scientific name Elaphe climacphora

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アオダイショウ
Common names Japanese ratsnake
Higher taxon Colubridae, Ophidia (Serpentia), Squamata, Reptilia
Natural range Endemic to Japan. Hokkaido, Honshu, Shikoku, Kyushu and peripheral islands. Kunashiri Is., Okujiri Is., Sado Is., Izu Islands (Izuoshima, Niijima, Shikinejima, and Kozushima Is.), Oki Islands, Tsuhima, Iki, Goto Islands, Hirado Is., Osumi Islands (almost all islands), and Kuchinoshima Is.
Habitat Various habitat such as forest, farm, around houses, etc.
Invasion information
Range in Japan Hachijojima Island (Izu Islands). According to literature, this species was found in northeastern part of the island. Range in Japan
Origin Japan. Detail is unknown.
Date The first record was in July 1984.
Route This species may accidentally hitchhiking on some material (such as ornamental trees), or possibly introduced deliberately for eradication of agriculture pests (rats and mice).
Impact Predation on native birds. There is many records of predation by this species on various birds.
Affected organism: Native birds
Regulation in Japan
Introduced range in other countries
Reference Notes
  • Mori & Moriguchi (1988) Food habits of the snakes in Japan: A critical review. The SNAKE. 20:98-113
  • Sengoku et al. (eds) (1996) Encyclopedia of Animals in Japan 5, Amphibians, Reptiles, Chondrichthyes. Heibonsha. (in Jpn)
  • Ono (1994) Reptiles and Amphibians. In: The Tokyo Electric Power Company, Tokyo Electric Power Service (eds) Report on a Basic Research for Environment of the Natural Park around Geothermal Sites of Hachijojima Island, the Izu Islands, Central Japan. The Tokyo Electric Power Company and Tokyo Electric Power Service, Tokyo, pp. 256-262 (in Jpn)
  • etc.