|
The northern sea nettle (''Chrysaora melanaster''), also called a brown jellyfish, is a species of jellyfish native to the northern Pacific Ocean and adjacent parts of the Arctic Ocean. (It is sometimes referred to as a Pacific sea nettle, but this name is also used for ''Chrysaora fuscescens''; the name Japanese sea nettle was used for this species, but that name now exclusively means ''Chrysaora pacifica''.〔Morandini AC, Marquess AC (2011) Revision of the genus ''Chrysaora'' Péron & Lesueur, 1810 (Cnidaria: Scyphozoa). Zootaxa 2464: 1–97〕 This jelly's medusa can reach 60 centimeters in length with tentacles growing up to three meters.〔CNET news, (Chrysaora melanaster ), from "Census of Marine Life reveals hidden life in oceans" article (October 5, 2010).〕〔(【引用サイトリンク】work=Census of Marine Life Arctic Ocean Diversity project )〕 The number of tentacles is up to 24 (8 per octant).〔 It dwells at depths of up to 100 meters, where it feeds on copepods, larvaceans, small fish, large zooplankton, and other jellies.〔 The sting is mild, although can cause serious skin irritation and burning.〔(【引用サイトリンク】publisher=National Aquarium in Baltimore )〕 File:Japanese Sea-Nettle (5688888862).jpg|Japanese Sea Nettle ''Chrysaora pacifica'' File:Japanese sea nettle, Boston Aquarium.jpg|Japanese Sea Nettle, New England Aquarium File:Chrysaora melanaster.webm|Swimming movement of the Japanese Sea Nettle, Albuquerque Aquarium ==References== 〔 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「Chrysaora melanaster」の詳細全文を読む スポンサード リンク
|