Scyphozoa | Rhizostomeae
Migotto, A.E., A.C. Marques, A.C. Morandini and F.L. da Silveira. 2002. (Ref. 813)
Size / Weight / Age
Max length : 18.0 cm WD male/unsexed; (Ref. 2992)
Pelagic; brackish; depth range 0 - 128 m (Ref. 101446)
Climate / Range
Tropical; 42°N - 30°S, 118°W - 34°W
Western Atlantic and Eastern Pacific: Tropical to temperate.
Up to 18 cm wide, half egg shaped or almost globular; number of velar lappets variable, about 14 in each octant, grooves between them short, all alike; scapules large, extending to or beyond level of bell margin; the free, bifurcate ends of the mouth-arms flare outwards, the lateral branches long.
Feeds on bivalve veligers, gastropod veligers, copepod eggs, nauplii, copepodites and adults, and Oikopleura sp. (Ref. 106824). The fertilized egg develops into a tiny, motile planula larva. After swimming freely in the water for several days, the planula attaches to a suitable substrate and transforms into a sessile polyp or scyphistoma. Scyphistomae feed and grow, attaining a maximum size of a few mm. They reproduce asexually a number of ways, including the formation of podocysts and motile or non-motile buds, but only podocyst. The scyphistoma undergoes strobilation which results to ephyrae; developing itself into medusae (Ref. 7696).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
Fisheries: of potential interest
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Estimation of some characteristics with mathematical models
Low vulnerability (10 of 100)