Asyncoryne

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Asyncoryne
Systematics
Class : Hydrozoa (Hydrozoa)
Subclass : Hydroidolina
Order : Anthoathecata
Subordination : Capitata
Family : Asyncorynidae
Genre : Asyncoryne
Scientific name of the  family
Asyncorynidae
Kramp , 1949
Scientific name of the  genus
Asyncoryne
Warren , 1908

Asyncoryne is a genus of the hydrozoa (Hydrozoa) from the tribe of the cnidarians (Cnidaria) that lives exclusively in the sea . The genus consists of only two species ; it is the only genus of the family Asyncorynidae .

features

The species have a polyp and a medusa stage . However, so far only young, not yet sexually mature medusas have become known. The hydroid polyp has a short hydrocaulus that grows up from creeping stolons. The perisarc of Hydrocaulus and the Hydrorhiza is lamellar and made up of numerous, clearly defined layers. The stolonal coenosarc is divided in some places by some elongated endodermal canals. Coenosarc and Perisarc are connected by tubular channels. The hydrant is club-shaped and has a wreath with four to six solid, capitate tentacles around the mouth. Numerous solid moniliform tentacles are distributed all over the body. The Medusa buds form in the lower third of the hydrant. The young medusa has four tentacles that are covered with nettle cells. Nettle cell pockets on the exumbrella (outside of the screen) contain stenotles .

Geographical occurrence

The species occur in the Indian and Pacific Oceans. A deposit off the coast of Reunion was at a depth of 345 to 375 m.

Systematics

Currently only two species of the genus or family are known:

swell

literature

  • Jean Bouillon, Cinzia Gravili, Francesc Pagès, Josep-Maria Gili, Fernando Boero: An introduction to Hydrozoa. Publications Scientifiques du Muséum, Paris 2006, ISBN 2-85653-580-1 , ( Mémoires du Muséum national d'Histoire naturelle 194), pp. 1-591.
  • Marymegan Daly, Mercer R. Brugler, Paulyn Cartwright, Allen G. Collin, Michael N. Dawson, Daphne G. Fautin, Scott C. France, Catherine S. McFadden, Dennis M. Opresko, Estefania Rodriguez, Sandra L. Romano, Joel L. Stake: The phylum Cnidaria. A review of phylogenetic patterns and diversity 300 years after Linnaeus. In: Zootaxa 1668, 2007, ISSN  1175-5326 , pp. 127-182, abstract (PDF; 406 kB) .

On-line

Individual evidence

  1. ↑ Fernando Boero, Jean Bouillon and N. Gravier-Bonnier: The life cycle of Pteroclava krempfi (Cnidaria, Hydrozoa, Cladocorynidae), with notes on Asyncoryne philippina (Asyncorynidae). Scientia Marina, 59 (1) - 65-76, Barcelona 1995 ISSN  0214-8358
  2. ^ World Hydrozoa Database

Web links