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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 Midvalley fairy shrimp ： ウィキペディア英語版 Midvalley fairy shrimp The midvalley fairy shrimp, ''Branchinecta mesovallensis'', is a small () freshwater crustacean in the Branchinectidae family endemic to shallow ephemeral pools (pools that seasonally fill and dry up) near the middle of California's Central Valley. These vernal pool ecosystems are home to other unique organisms adapted to the ephemeral nature of the water cycle in the pools in California's mediterranean climate. It is one of eight known branchiopod species found only in Northern California. The species swims through the water on its back, using two stalked compound eyes to see where it is going. It propels itself along by beating its phyllopods. These are legs with leaflike or paddlelike structures. The moving phyllopods also serve as gills, extracting oxygen from the water stream they create. This places the shrimp in the Class Branchiopoda ("branchio" meaning gill, and "poda" meaning feet). ==Federal protection denied== On August 31, 2001, the U.S. Fish and Wildlife Service was petitioned by the Center for Biological Diversity and VernalPools.Org to list the midvalley fairy shrimp as an endangered species pursuant to the Endangered Species Act, and to concurrently designate critical habitat for the species. On April 29, 2003, the U.S. Fish and Wildlife Service published a finding in Federal Register notice that the petition presented substantial information to indicate that listing might be warranted. After reviewing the available scientific and commercial information, the U.S. Fish and Wildlife Service have found that listing is not warranted at this time. 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「Midvalley fairy shrimp」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.