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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 Argopecten irradians ： ウィキペディア英語版 Argopecten irradians ''Argopecten irradians'', formerly classified as ''Aequipecten irradians'', common names Atlantic bay scallop or bay scallop, is an edible species of saltwater clam, a scallop, a marine bivalve mollusk in the family Pectinidae, the scallops. ==Bay scallop fishery== This species of scallop used to support a large fishery on the East Coast of the United States, but since the 1950s, the fishery of the wild scallops has decreased greatly. This decrease is apparently the result of several negative influences, one of which is a reduction in sea grasses (to which bay scallop spat attach) due to increased coastal development and concomitant nutrient runoff. Another possible factor is reduction of sharks from overfishing. A variety of sharks used to feed on rays, which are a main predator of bay scallops. With the shark population reduced, in some places almost eliminated, the rays have been free to feed on scallops to the point of greatly decreasing their numbers. By contrast, the Atlantic sea scallop (''Placopecten magellanicus'') is at historically high levels of abundance, after recovery from overfishing. Bay scallops are now raised in aquaculture in Florida.〔(【引用サイトリンク】title=Argopecten irradians concentricus )〕 They were introduced into China for the 1980s and are the basis of a vibrant aquaculture industry in that country.〔(【引用サイトリンク】title=TRAINING MANUAL ON BREEDING AND CULTURE OF SCALLOP AND SEA CUCUMBER IN CHINA )〕 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「Argopecten irradians」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.