Scyphomedusae and Cubomedusae from the Eastern Pacific
The purpose of this paper is to review the literature on the scyphomedusae and cubomedusae from the eastern Pacific. Forty-three species of scyphomedusae are known from Alaska to Chile. Cubomedusae are represented only by Carybdea marsupialis from the coast of southern California. Ten species of stauromedusae are known from this area, most occur in shallow, subarctic and temperate waters of the North Pacific; Haliclystus octoradiatus is the most common. Fourteen species of coronate medusae and one polyp (Stephanoscyphus sp.) have been reported, most are mesopelagic and many are widely distributed. Thirteen species of semaeostomes are known from the eastern Pacific, most are neritic. However, two mesobathypelagic species, Deepstaria enigmatica and Poralia rufescens, have been collected at several locations, including southern California. Chrysaora fuscescens is the most abundant semaeostome species in the northeastern Pacific and can occur at high biomass levels in inshore waters. Rhizostomes are represented by only five species, all subtropical-tropical. The scyphomedusan fauna along the entire eastern Pacific coast is badly in need of study. The taxonomy of a number of species requires clarification. The geographic distributions of most species are unknown. Little is known about their biology and ecology.
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Document Type: Research Article
Publication date: 01 September 1990
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