Desmophyes annectens   Haeckel,  1888 (Hydrozoan)
Organism information awaits expert curation
Class: Hydrozoa

Polygastric phase: Usually a pair, 30 mm in length and 15 mm in breadth (rarely 2 or 3 pairs) of rounded, wedge shaped soft highly transparent, nectophores loosely joined together; with several reserve buds of nectophores. Somatocysts simple, club shaped (or dilated tip) lies obliquely in mesoglea. Hydroecium shallow; combined hydroecium of two nectophores spindle shaped. Nectosac relatively very small with straight and simple, radial canals occurs at lower part of nectophore, its ostium directed downwards and outwards. Ostium surrounded by a ring of minute red pigment flecks and tubercles.

Eudoxid phase: Bract dome-shaped, bounded below by two lateral hydroecial flaps, with a relatively large asexual nectophore and a bunch of smaller gonophores, at base of gastrozooid. Sexes of eudoxids alternate on the stem. A median, pear shaped vesicle - central organ lies at junction of five bracteal canals – 3 long and 2 short. Bracteal cavity (hydroecium) conical in shape and deep.

Special nectophore nearly triangular in shape, with conical-shaped nectosac, four simple straight radial canals, pigment spots at junctions of radial and circular canals, with tubercles surrounding ostium. Gonophores with short umbrella; male gonophores with very small umbrella; manubrium 3-4 times as long as umbrella and project out.

Synonym (s)
Desmophyes annectens Totton, 1965
Desmophyes annectens Haeckel, 1888

Common Name (s)
Economic Importance and Threats

Habitat:  Pelagic


• Bay of Bengal (Lat: 15) (Long: 90) INDIA
• Bay of Bengal (Record: 1962-1965)

Literature Source(s)
  • Daniel, R (1985) Fauna of India and the adjacent countries (Coelenterata: Hydrozoa: Siphonophora) ZSI 440 pp Available at - NIO, Goa
  • Alfred, JRB; Sinha, NK and Chakraborty, S (2002) Checklist of mammals of India Occasional paper no. 199 ZSI, Kolkata 289 pp Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Sealifebase Available at -

Page last updated on:2010-06-16

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