A Record of the Blackheaded Sea Snake, Hydrophis melanocephalus (Reptilia: Elapidae), from Wakayama Prefecture, Japan

GEN MASUNAGA; YOSHIKO NAGAI; HIDETOMO TANASE; HIDETOSHI OTA

doi:10.3105/1345-5834(2005)24[37:AROTBS]2.0.CO;2

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GEN MASUNAGA,¹ YOSHIKO NAGAI,² HIDETOMO TANASE,³ HIDETOSHI OTA^1,*

¹aTropical Biosphere Research Center, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa 903–02
²bGraduate School of Science and Engineering, University of the Ryukyus, Senbaru 1, Nishihara, Okinaw
³cSeto Marine Biological Laboratory, Kyoto University, Shirahama, Nishimuro, Wakayama 649–2211, JAPAN

^** Corresponding author. Tel: +81–98–895–8937; Fax: +81–98–895–8966; E-mail address: ota@sci.u-ryukyu.ac.jp

Abstract

A large gravid female of Hydrophis melanocephalus was captured in early December 2004 from offshore of Wakayama Prefecture, west-central Honshu, Japan. This is the first confirmed record of this species from waters adjacent to Honshu. The female gave birth to three juveniles (one born alive, and the other two stillborn) within three days of capture. Autopsy of the female after her death in one month later yielded another developing embryo and four undeveloped eggs in oviducts. This suggests that her actual litter size was four and potential litter size was eight.

Citation Download Citation

GEN MASUNAGA, YOSHIKO NAGAI, HIDETOMO TANASE, and HIDETOSHI OTA "A Record of the Blackheaded Sea Snake, Hydrophis melanocephalus (Reptilia: Elapidae), from Wakayama Prefecture, Japan," Current Herpetology 24(1), 37-41, (1 June 2005). https://doi.org/10.3105/1345-5834(2005)24[37:AROTBS]2.0.CO;2

Accepted: 1 June 2005; Published: 1 June 2005

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