Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Phylum: Cnidaria
Classis: Scyphozoa
Subclassis: Discomedusae
Ordo: Rhizostomeae
Familiae: Archirhizidae – Bazingidae – Cassiopeidae – Catostylidae – Cepheidae – Leptobrachidae – Lobonemidae – Lychnorhizidae – Mastigiidae – Rhizostomatidae – Stomolophidae – Thysanostomatidae – Versurigidae
Name
Rhizostomeae
Synonyms
Rhizostomatida Cuvier, 1799
Vernacular names
magyar: Gyökérszájú medúzák
References
Rhizostomeae – Taxon details on Integrated Taxonomic Information System (ITIS).
Rhizostomatida – Taxon details on Integrated Taxonomic Information System (ITIS).
Rhizostomeae is an order of jellyfish. Species of this order have neither tentacles nor other structures at the bell's edges. Instead, they have eight highly branched oral arms, along which there are suctorial minimouth orifices. (This is in contrast to other scyphozoans, which have four of these arms.) These oral arms become fused as they approach the central part of the jellyfish. The mouth of the animal is also subdivided into minute pores that are linked to coelenteron.
Edible jellyfish
Main article: Jellyfish as food
Jellyfish species fished on a commercial basis for human consumption (both as a delicacy and for use in traditional medicine) are all from this order[1] and include members of the families Catostylidae, Lobonematidae, Rhizostomatidae and Stomolophidae.[2][3][4] The jellyfish are typically dried and/or salted.[1] In China, which was the first country documented to use jellyfish as food, this has been practiced at least since the year 300 CE,[1] but they are also commonly consumed in Japan (the largest consumer of jellyfish today), Korea and southeast Asia.[3][4] Several countries outside Asia have also started catching and exporting these in recent decades.[1]
Taxonomy
As of 2007, there were 92 recognized extant species in Rhizostomeae.[5] These belong in the following families:[5][6]
Suborder Daktyliophorae
Family Catostylidae Gegenbaur, 1857 -- 7 genera
Family Lobonematidae Stiasny, 1921 -- 2 genera
Family Lychnorhizidae Haeckel, 1880 -- 3 genera
Family Rhizostomatidae Cuvier, 1799 -- 4 genera
Family Stomolophidae Haeckel, 1880 -- 1 genus
Suborder Kolpophorae
Family Cassiopeidae Agassiz, 1862 -- 1 genus
Family Cepheidae Agassiz, 1862 -- 5 genera
Family Mastigiidae Stiasny, 1921 -- 5 genera
Family Thysanostomatidae Gegenbaur, 1857 -- 1 genus
Family Versurigidae Gegenbaur, 1857 (empty taxa)
References
López-Martínez; and Álvarez-Tello (2013). The jellyfish fishery in Mexico. Agricultural Sciences 4(6A): 57-61.
Miura; Miura; and Park (2006). Collagen as the Major Edible Component of Jellyfish (Stomolophus nomural). Journal of Food Science 48(6): 1758–1760.
Kitamura; and Omori (2010). Synopsis of edible jellyfishes collected from Southeast Asia, with notes on jellyfish fisheries. Plankton Benthos Res 5(3): 106–118.
Omori; and Kitamura (2004). Taxonomic review of three Japanese species of edible jellyfish (Scyphozoa: Rhizostomeae). Plankton Biol. Ecol. 51(1): 36–51.
Daly, Brugler, Cartwright, Collins, Dawson, Fautin, France, McFadden, Opresko, Rodriguez, Romano & Stake (2007). The phylum Cnidaria: A review of phylogenetic patterns and diversity 300 years after Linnaeus. Zootaxa 1668: 127–182
"Rhizostomeae". WoRMS. World Register of Marine Species. Retrieved 4 August 2012.
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