Addition of the Sea Snake, Hydrophis stokesii (Reptilia: Squamata: Elapidae), to the Herpetofauna of Japan

Takahide Sasai; Takumi Yamamoto; Shin-ichiro Oka; Mamoru Toda

doi:10.5358/hsj.40.190

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Takahide Sasai,^1,2,3,* Takumi Yamamoto,³ Shin-ichiro Oka,¹ Mamoru Toda⁴

¹Okinawa Churashima Research Center, 888 Ishikawa, Motobu, Okinawa 905–0206, JAPAN
²Okinawa Churaumi Aquarium, 424 Ishikawa, Motobu, Okinawa 905–0206, JAPAN
³Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa 903–0213, JAPAN
⁴Tropical Biosphere Research Center, University of the Ryukyus, Nishihara, Okinawa 903–0213, JAPAN

^*Corresponding author. E-mail address: s-isa@hotmail.co.jp

Abstract

Hydrophis stokesii was collected in the coastal water of Okinawajima Island on 30 March 2021. This is the first record of the species from Japanese waters, extending its known range of occurrence toward east-northeast by more than 900 km. The snake was an adult female, 1,545 mm in snout-vent length, 203 mm in tail length, and 3,360 g in body mass. It had 11 well-developed yolked follicles in ovaries and a half-digested spiny puffer fish (Diodon sp.) in its stomach. This individual may possibly represent a stable population of H. stokesii in the Okinawan waters.

Citation Download Citation

Takahide Sasai, Takumi Yamamoto, Shin-ichiro Oka, and Mamoru Toda "Addition of the Sea Snake, Hydrophis stokesii (Reptilia: Squamata: Elapidae), to the Herpetofauna of Japan," Current Herpetology 40(2), 190-196, (25 August 2021). https://doi.org/10.5358/hsj.40.190

Accepted: 3 July 2021; Published: 25 August 2021

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