Scyphozoa | Stauromedusae
Cairns, S.D., D.R. Calder, A. Brinckmann-Voss, C.B. Castro, D.G. Fautin, P.R. Pugh, C.E. Mills, W.C. Jaap, M.N. Arai, S.H.D. Haddock and D.M. Opresko. 2003. (Ref. 1663)
Size / Weight / Age
Max length : 3.0 cm WD male/unsexed; (Ref. 2992)
Climate / Range
Pacific, Atlantic and Arctic Oceans: North America, coasts of Europe, Japan, Chile, USA and Canada. Mostly polar, but also in subtropical and boreal.
Calyx conical to pyramidal, up to 3 cm wide about as high as wide or somewhat lower; peduncle about as long as height of calyx; perradial notches between arms slightly deeper than the interradial; 30 to 60 (up to 100) tentacles on each arms; marginal anchors kidney shaped, with a short, cylindrical stalk, gonads to ends of arms, with follicles in 2 to 4 or 6 radial rows; subumbrella smooth.
Members of the class Scyphozoa are gonochoric. Life cycle: Egg is laid by the adult medusa which later develops into a free-living planula, then to a scyphistoma to a strobila, and lastly to a free-living young medusa (Ref. 833).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
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Estimation of some characteristics with mathematical models
Low vulnerability (10 of 100)