Received: 6 June 2016 | Revised: 18 February 2017 | Accepted: 26 March 2017 DOI: 10.1002/ece3.3002 ORIGINAL RESEARCH Factors restricting the range expansion of the invasive green anole Anolis carolinensis on Okinawa Island, Japan Yukari Suzuki-Ohno1 | Kenjiro Morita1 | Nobuaki Nagata1 | Hideaki Mori2 | Shintaro Abe3 | Takashi Makino1 | Masakado Kawata1 1Department of Ecology and Evolutionary Biology, Graduate School of Life Abstract Sciences, Tohoku University, Sendai, Miyagi, The green anole Anolis carolinensis invaded the Ogasawara Islands in Japan, drove various Japan native species to extinction, and its distribution expanded 14 years after initial establish- 2Ogasawara Division, Japan Wildlife Research Center, Tokyo, Japan ment. A. carolinensis invaded Okinawa Island, but it has not expanded its distribution in 3Naha Nature Conservation Office, Ministry of more than 25 years, although its density is extremely high in the southern region. To de- the Environment, Naha, Okinawa, Japan termine whether A. carolinensis has the potential to expand its distribution on Okinawa Correspondence Island, we performed phylogenetic analysis of mitochondrial ND2 DNA sequences to Masakado Kawata, Department of Ecology study the origin of A. carolinensis that invaded Okinawa Island. We further used a species and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, distribution model (MaxEnt) based on the distribution of native populations in North Miyagi, Japan. America to identify ecologically suitable areas on Okinawa Island. Nucleotide sequence Email:
[email protected] analysis shows that the invader A. carolinensis originated in the western part of the Gulf Funding information Coast and inland areas of the United States and that a portion of the anoles on Okinawa Japan Society for the Promotion of Science, Grant/Award Number: Grant-in-Aid for was not introduced via the Ogasawara Islands.