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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 Sandyback stingaree ： ウィキペディア英語版 Sandyback stingaree The sandyback stingaree or great stingaree (''Urolophus bucculentus'') is a little-known species of stingray in the family Urolophidae, endemic to southeastern Australia. It is generally found offshore around the edge of the continental shelf, at a depth of . A relatively large species reaching long, the sandyback stingaree has a diamond-shaped pectoral fin disc wider than long, usually with a dorsal pattern of numerous fine lighter marks on a yellowish to brownish background. Its short tail terminates in a deep, leaf-shaped caudal fin, and bears a sizable dorsal fin just in front of the stinging spine. A bottom-dwelling predator taking mostly crustaceans, the sandyback stingaree is aplacental viviparous: females supply their unborn young with histotroph ("uterine milk"), bearing up to five pups every other year following a 14–19 month gestation period. Significant numbers of this species are taken incidentally by commercial fisheries, primarily off New South Wales where overall stingaree populations have declined dramatically as a result. With fishing pressure still intense in the area, the International Union for Conservation of Nature (IUCN) has assessed the sandyback stingaree as Vulnerable. ==Taxonomy== Australian naturalist William John Macleay described the sandyback stingaree in an 1884 issue of ''Proceedings of the Linnean Society of New South Wales'', based on specimens collected near Port Jackson in New South Wales. Within the genus, it seems to be most closely related to the patchwork stingaree (''U. flavomosaicus'') and the butterfly stingaree (''U. papilio''). 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「Sandyback stingaree」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.