- 著者
- Tomohiro Kita Kazuki Matsushige Shunsuke Endo Noritaka Mochioka Katsunori Tachihara
- 出版者
- The Japanese Society of Systematic Zoology
- 雑誌
- Species Diversity (ISSN:13421670)
- 巻号頁・発行日
- vol.26, no.1, pp.31-36, 2021-03-05 (Released:2021-03-05)
- 参考文献数
- 25
- 被引用文献数
- 1
Six specimens of Anguilla luzonensis Watanabe, Aoyama, and Tsukamoto, 2009 were collected from Okinawa-jima Island, Okinawa Prefecture, southern Japan. This species was previously known from Luzon Island, Mindanao Island and Taiwan. Therefore, the present specimens represent the first records of A. luzonensis from Japan and extend the northern distribution limit of the species. A new standard Japanese name, “Uguma-unagi”, is proposed for the species.
- 著者
- Kyohei Sakai Toshiyuki Ohkawa Noritaka Mochioka
- 出版者
- The Japanese Society of Systematic Zoology
- 雑誌
- Species Diversity (ISSN:13421670)
- 巻号頁・発行日
- vol.27, no.2, pp.341-346, 2022-11-03 (Released:2022-11-03)
- 参考文献数
- 12
Bathycongrus castlei Smith and Ho, 2018, previously recorded only from Taiwan, is newly reported from Japan, based on two specimens (352+, 362 mm total length) collected from coastal waters in Tosa Bay, Kochi Prefecture at depths ranging from 128–315 m. Bathycongrus castlei differs from two congeners previously reported from Japan, Bathycongrus retrotinctus (Jordan and Snyder, 1901) and Bathycongrus wallacei (Castle, 1968), in having an intermediate number of total vertebrae (159–162 in B. castlei vs. 143–151 in B. retrotinctus and 172–181 in B. wallacei) and dark margins on the entire surface of the dorsal, anal and caudal fins (vs. only to the posterior end of the medial fins in B. retrotinctus and B. wallacei), 1 or 2 slightly enlarged teeth with a few small teeth at the front and sides and 6–9 stout or nearly granular teeth behind on the vomer [vs. 2 (sometimes 1) enlarged teeth surrounded by several smaller teeth in B. retrotinctus and 2 (rarely 1 or 3) enlarged teeth on midline, with 2 smaller teeth directly behind, side by side, and a few additional small teeth in the front and behind, no teeth laterally in B. wallacei]. A detailed description and fresh coloration are given for the specimens and a new standard Japanese name “Heri-tsumaguro-anago” is proposed for B. castlei.