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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 Broad stingray ： ウィキペディア英語版 Broad stingray The broad stingray (''Dasyatis lata''), also known as the brown stingray or Hawaiian stingray, is a species of stingray in the family Dasyatidae. The predominant species of stingray in the inshore waters of the Hawaiian Islands, this benthic fish typically inhabits sandy or muddy flats at depths greater than . Usually growing to across, the broad stingray has a wide, diamond-shaped pectoral fin disc with a protruding snout tip and a long tail with a ventral fin fold. At night, this species actively forages for bottom-dwelling invertebrates and bony fishes, often near the boundaries of reefs. Reproduction is aplacental viviparous. As there does not appear to be any substantial threats to its population, the International Union for Conservation of Nature has listed this species under Least Concern. ==Taxonomy and phylogeny== American zoologist Samuel Garman described the broad stingray in an 1880 issue of the scientific journal ''Bulletin of the Museum of Comparative Zoology'', giving it the name ''Trygon lata'' from the Latin word for "broad".〔〔Hoover, J.P. (Fish of the Month: Stingray ''Dasyatis lata'' ). hawaiisfishes.com. Retrieved on December 5, 2009.〕 Subsequent authors synonymized ''Trygon'' with ''Dasyatis''.〔(Catalog of Fishes (Online Version) ). California Academy of Sciences. Retrieved on December 2, 2009.〕 The type specimen was collected from what were then called the "Sandwich Islands", and measures across. Lisa Rosenberger's 2001 phylogenetic analysis of 14 ''Dasyatis'' species, based on morphological characters, found that the sister species of the broad stingray is the roughtail stingray (''D. centroura''), and that they form a clade with the southern stingray (''D. americana'') and the longtail stingray (''D. longa''). As ''D. centroura'' is found in the Atlantic, this suggests that it and ''D. lata'' evolutionarily diverged before or with the formation of the Isthmus of Panama (''c.'' 3 Ma). 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「Broad 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.