Chinemys reevesii

Basic information
Scientific name	Chinemys reevesii	Click to magnify
Major synonym	Chinemys reevesi, Mauremys reevesii
Common names	Reeves' pond turtle
Higher taxon	Geoemydidae, Testudines, Reptilia
Natural range	Korean Peninsula, continental China
Habitat	Lake or pond, river with slow stream.

Invasion information
Range in Japan	Hokkaido and Okinawajima Is. There were also records from Kumejima (Okinawa Islands) and Kikaijima (Amami Islands), where if the turtle is established or not is unclear. The populations on remaining parts of mainland of Japan are possibly non-native ones introduced from Korea, according to a recent literature investigation. In addition, additional introduction from continental China may occur recently.
Origin	Korean Peninsula. Recently imported from continental China.
Date	Late 18C. For recent introduction, there is many records since 1990s in Hokkaido.
Route	Deliberate: Release or escape of pet animals.
Impact	Potentially: Hybridization, competition, predation. Hybridization often occur between turtle species of Geoemydidae. Native organism(s) affected: Freshwater fishes and invertebrates (predation). Native turtles Mauremys japonicua (hybridization and competition) and Geoemyda japonica (hybridization).
Regulation in Japan	No action for prevention, mitigation, control, or eradication.
Introduced range in other countries	Populations on Taiwan are possibly non-native.

Reference

Notes

Biodiversity Center of Japan (ed) (2001) Amphibians and Reptiles, 5th National Survey on the Natural Environment (Accessed on 2012-6-21) http://www.biodic.go.jp/reports2/5th/ap_rep/index.html (in Jpn)
Hikida & Suzuki (2010) The introduction of the Japanese population of Chinemys reevesii deduced from descriptions in the ppharmacopias of the Edo Era. Bull Herpetolo Soc Jpn. 2010(1), 41-46 (in Jpn)
Lovich et al. (2011) Mauremys reevesii (Gray 1831) Reeve’s Turtle, Chinese-Keeled Pond Turtle. in: Rhodin et al. (eds) Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group. Chelonian Research Monographs No. 5. pp.050.1-050.10
Maenosono & Toda (2007) Distribution of amphibians and terrestrial reptiles in the Ryukyu Archipelago: A review of published records. Akamata. 18, 28-46 (in Jpn)
Ota et al. (2004) Feral populations of amphibians and reptiles in the Ryukyu Archipelago, Japan. Global Environ Res. 8(2), 133-143.
Sengoku et al. (eds) (1996) The Encyclopedia of Animals in Japan 5 Amphibians, Reptiles, Chondrichthyes. Heibonsha, Tokyo (in Jpn)
Toda & Yoshida (2005) Issues and perspectives regarding invasive alien species of amphibians and reptiles in Japan. Bull Herpetol Soc Jpn. 2005(2), 139-149 (in Jpn)