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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Blind electric ray ： ウィキペディア英語版 Blind electric ray The blind electric ray (''Typhlonarke aysoni'') is a little-known species of sleeper ray in the family Narkidae, endemic to New Zealand. It is found on the bottom, typically at a depth of . Reaching in length, this species has a thin, nearly circular pectoral fin disc without visible eyes, and a short tail with a single dorsal fin. Its pelvic fins are divided in two, with the anterior portion forming a limb-like appendage; in males the claspers do not extend past the disc margin. A weak swimmer, the blind electric ray likely pushes itself along using its pelvic fins. It is known to feed on polychaete worms, and can defend itself with an electric shock. Reproduction is aplacental viviparous. The International Union for Conservation of Nature (IUCN) does not have enough information to assess the conservation status of this species. ==Taxonomy== The trawler ''Doto'' collected the first known specimen of the blind electric ray from the Foveaux Strait, during a research cruise in early 1900. The head of the expedition Lake F. Ayson gave the specimen to Augustus Hamilton of the Dominion Museum, who named it ''Astrape aysoni'' in his honor. Hamilton published his account of the species in a 1902 volume of the scientific journal ''Transactions and Proceedings of the New Zealand Institute''. In 1909, Edgar R. Waite created the new genus ''Typhlonarke'' for this species. The blind electric ray may also be referred to as the blind legged torpedo or the round electric ray.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Blind electric ray」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.