Rhopalonema velatum   Gegenbaur,  1856 (Hydrozoan)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Cnidaria
Class: Hydrozoa
Order:Trachymedusae
Family:Rhopalonematidae

Description
Size: 1 cm WD.

Umbrella nearly hemispherical, with a conical apical knob; stomach narrow, elongated, usually half as long as the depth of the bell cavity; eight gonads linear or oval, extending along one-third of radial canals in the middle or near the margin; eight club-shaped tentacles at the end of each radial canal, a cirrus-like small tentacle between every two club-shaped tentacles; a statocyst close to each tentacles; velum very well developed.


Synonym (s)

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Pelagic

Biogeography


• Andaman and Nicobar Islands, Nicobar Island (Lat: 7.24) (Long: 93.74) INDIA
• Lakshadweep Islands (Lat: 7) (Long: 69) INDIA (Record: 1985-1987) (Depth: 150 mts)
• Lakshadweep Islands (Lat: 18) (Long: 76) INDIA (Record: 1985-1987) (Depth: 150 mts)
• Exclusive Economic Zone INDIA (Record: 1986-1990) (Depth: 150 mts)

Literature Source(s)
  • Beebe, CW (1910) XXVII. Catalogue of the pheasants, peafowl, jungle fowl and spur fowl in the Indian Museum Records of the Indian Museum ZSI 5(Part IV) 263-275 Available at - Pune University, Pune
  • Santhakumari, V (1993) A study of Medusae from Andaman and Nicobar waters The Journal of the Zoological Society of Kerala 3(1) 37-43 Available at - NCL, Pune
  • Panikkar, NK (1973) Hand book to the international zooplankton collections Volume. 5 Indian Ocean Biological Center 5 1-210 Available at - NIO, RC Kochi
  • Santhakumari, V and Nair, VR (1999) Distribution of hydromedusae from the exclusive economic zone of the west and east coasts of India Indian Journal of Marine Sciences CSIR, New Delhi 28 150-157 Available at - NIO, RC Kochi
  • Zhong, Z (1989) Marine planktology Springer-Verlag Berlin Heidelberg New York Tokyo 454 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Santhakumari, V (1996) Medusae from the sea around Laccadive group of islands (7 degrees-18 degrees N/69 degrees-76 degrees E) Proceedings of the Second Workshop on Scientific Results of FORV Sagar Sampada Department of Ocean Development, New Delhi, India 249-255 Available at - NIO, Goa
  • Sealifebase Available at - http://www.sealifebase.org/
  • Santhakumari, V (1997) Species composition, distribution and abundance of hydromedusae in the Exclusive Economic Zone of the east coast of India Publications of the Seto Marine Biological Laboratory Sirahama 38(1-2) 53-61 Available at - NIO, Goa

Page last updated on:2012-02-03

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