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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 Red stingray ： ウィキペディア英語版 Red stingray The red stingray (''Dasyatis akajei'') is a species of stingray in the family Dasyatidae, found in the northwestern Pacific Ocean off Japan, Korea, and China, and possibly elsewhere. It primarily inhabits shallow, sandy habitats close to shore, and has been known to enter brackish water. The red stingray has a diamond-shaped pectoral fin disc and gains its common name from its bright orange-red underside; there may also be patches of orange at various spots on its upper surface. Most individuals are no more than long. Feeding mainly on crustaceans and bony fishes, the red stingray plays a key ecological role as an apex predator in its environment. Reproduction is aplacental viviparous, with females giving birth to 1 or up to 10 pups at a time. The red stingray is valued as food in Japan; large numbers are caught as bycatch and brought to market, which has seemingly led to a population decline in this unprolific species. As a result, the International Union for Conservation of Nature (IUCN) has assessed it as Near Threatened. ==Taxonomy== The original description of the red stingray was published by Johannes Müller and Friedrich Henle in their 1841 ''Systematische Beschreibung der Plagiostomen'' under the name ''Trygon akajei'', based on an earlier account of "''Pastinaca akajei''" by Heinrich Bürger. Subsequent authors have placed the genus ''Trygon'' in synonymy with ''Dasyatis''. A lectotype for this species was designated by Marinus Boeseman in 1947.〔(Catalog of Fishes (Online Version) ). California Academy of Sciences. Retrieved on December 4, 2009.〕 Other common names for the red stingray include brown stingray, estuary stingaree, Japanese red stingray, Japanese stingray, red skate, whip ray, whip stingray, and yellow stingray.〔 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「Red 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.