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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 Roughnose stingray ： ウィキペディア英語版 Roughnose stingray The roughnose stingray, ''Pastinachus solocirostris'', is a little-known species of stingray in the family Dasyatidae, generally found in shallow, estuarine waters associated with mangroves off Borneo, Sumatra, and possibly Java. Growing to across, this species has a rhomboid pectoral fin disc and a whip-like tail with a ventral fin fold. It is characterized by its pointed snout, which is covered by dermal denticles. Reproduction is aplacental viviparous, with females possibly bearing as few as one pup at a time. The International Union for Conservation of Nature (IUCN) has assessed the roughnose stingray as Endangered; it is threatened by overfishing and the destruction and degradation of its mangrove habitat. ==Taxonomy== Peter Last, B. Mabel Manjaji, and Gordon Yearsley described the roughnose stingray in a 2005 paper for the scientific journal ''Zootaxa'', giving it the specific epithet ''solocirostris'' from the Latin ''solocis'' ("rough" or "bristly") and ''rostrum'' ("snout"). The type specimen is an adult male across, collected from the fish market in Mukah, Sarawak, Malaysia. 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「Roughnose stingray」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.