Zancleidae
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Zancleidae |
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| Russell , 1953 |
The Zancleidae are a family of hydrozoa (Hydrozoa) from the tribe of the cnidarians (Cnidaria) that live exclusively in the sea . It is a very small family with currently about 36 species in three genera .
features
The hydroid polyps grow colonial and stolonally; crawling the stolons . Stems are present, but often very short. The polyps can be monomorphic or polymorphic . The gastrozooids (feeding polyps) are cylindrical or spindle-shaped, either with a ring of capitate tentacles around the mouth and many distributed capitate or pearl-shaped tentacles, or with reduced capitate tentacles or without tentacles. The gonozooids (sexual polyps) and dayctolozooids (defense polyps), if present with capitate tentacles, or the tentacles are reduced to fields of nettle cells .
The medusa has a rounded umbrella with four perradial nettle cell fields. The fields are oval, club-shaped, oblong or linear. The nettle cells are usually of the stenotle type. The manubrium is cylindrical in shape with a simple mouth. There are four radial channels. At the edge of the screen sit two or four hollow tentacles, each with abaxial, stalked cnidophores made up of macrobasic euryteles. The tentacles can also be missing. There are no ocelli .
Geographical distribution and habitat
The family is found worldwide mainly in tropical waters.
Systematics
The family currently includes three genera with about 36 species. The family Halocorynidae proposed by Jacques Picard in 1957 is a younger synonym of Zancleidae.
- Family Zancleidae Russell, 1953 (incl.Halocorynidae Picard, 1957)
- Genus Halocoryne Hadzi, 1917
- Genus Zanclea Gegenbaur, 1856
- Genus Zanclella Boero & Hewitt, 1992
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literature
- Jean Bouillon, Cinzia Gravili, Francesc Pagès, Josep-Maria Gili and Fernando Boero: An introduction to Hydrozoa. Mémoires du Muséum national d 'Histoire naturelle, 194: 1-591, Publications Scientifiques du Muséum, Paris 2006 ISBN 978-2-85653-580-6
- 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. Zootaxa, 1668: 127-182, Wellington 2007 ISSN 1175-5326 Abstract - PDF
- Paul Lassenius Kramp: Synopsis of the Medusae of the World. Journal of the Marine Biological Association of the United Kingdom, 40: 1-469, Plymouth, 1961 PDF Online
On-line
Individual evidence
- ↑ World Hydrozoa Database ( Memento of the original from May 31, 2016 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.
