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01 Bulletin of marine sciences and fisheries, Kochi University (高知大学海洋生物研究報告)  12(1992)-25(2007) >

このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/10126/4373

タイトル: 土佐湾ウミヘビ科ウミヘビ属魚類2種の再検討とニシキウミヘビについて
その他のタイトル: Revision of the two sympatric snake-eel species of the genus Ophichthus (Ophichthidae, Anguilliformes) from Tosa Bay, southern Japan, with comments on O. tsuchidae
著者: 角田, 慎一郎
町田, 吉彦
Sumida, Shin-ichiro
Machida, Yoshihiko
キーワード: Snake-eels
O. urolophus
O. asakusae
O. tsuchidae
雑誌名: Bulletin of Marine Sciences and Fisheries, Kochi University
発行日: 15-Mar-2001
出版者: 高知大学海洋生物教育研究センター
抄録: Two species of the snake-eel genus Ophichthus were studied based on 89 O. urolophus and 13 O. asakusae specimens from Tosa Bay, and the holotype of O. roseus from Tokyo Bay, now referred to as O. asakusae. The two species are not distinguishable from each other by the origin of the dorsal fin in relation to the tip of pectoral fin and the depth of tail, which have been thought to be important characteristics for each species. However, O. urolophus differs from O. asakusae by having a snout with a narrow, short and shallow hollow on its dorsal surface (wide, long and deep hollow in the latter), cheek with a shallow groove or smooth (with a deep groove), skin near the tip of tail smooth with many short bristles (wrinkled with many pits),14-19 predorsal vertebrae (11-12) and 134-139 total vertebrae (126-132), clearly indicating that O. roseus is a junior synonym of O. asakusae. In addition, the two species differ in osteological features of the maxillary, angular and hypulas, and the arrangement of the coracoid and scapula. The relationship between O. urolophus and O. tsuchidae is briefly discussed.
URI: http://hdl.handle.net/10126/4373
出現コレクション:01 Bulletin of marine sciences and fisheries, Kochi University (高知大学海洋生物研究報告)  12(1992)-25(2007)


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