Corymorphidae
| Corymorphidae | ||||||||||||
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Corymorpha carnea |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Corymorphidae | ||||||||||||
| Allman , 1872 |
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The Corymorphidae are a family of hydrozoa (Hydrozoa) from the tribe of the cnidarians (Cnidaria) that live exclusively in the sea . It is a small family of currently almost 60 species . However, the size of the family is controversial.
features
The hydroid polyps live solitary , the hydroculus is long, hollow or filled with parenchymal tissue. The lower part is covered with short papillae and / or with longer anchor threads. The tentacles are arranged in two groups; they have either a wreath of moniliform or capitate tentacles around the mouth, or several wreaths of tentacles. The two groups of tentacles sits in one to three tentacle wreaths arranged aborally. These are moniliform or filiform tentacles. The gonophores develop into free medusa or into firmly grown spore sacs. They develop above the aboral tentacles either directly from the wall of the hydrant or on blastostyles.
The medusa is arched like a dome or has a pointed apex. With very few exceptions, the sausage-shaped manubrium does not extend over the edge of the screen (but this could be an artifact). Occasionally, bag-like appendages are also present. The mouth is simple and rounded. There are one to four hollow, capitate marginal tentacles of different sizes and configurations. Exceptionally, these marginal tentacles can also be branched or rudimentary. The gonads are not further subdivided and surround the manubrium over its entire length and, in Gotoea, also the sac-like processes.
Geographical occurrence
The species of the family are distributed worldwide in the tropical to polar seas.
Systematics
According to Boero et al. (2006) the following genera and species are assigned to the Corymorphidae.
The "World Hydrozoa Database" recognizes the following genera: Branchiocerianthus Mark, 1898, Corymorpha Sars, 1835, Euphysa Forbes, 1848, Euphysomma Kramp, 1962, Fukaurahydra Yamada, Konno & Kubota, 1974, Gymnogonos Bonnevie, 1898, Hataia Hirai, 1965 & Yamada , Paragotoea Kramp, 1942, Pinushydra Bouillon & Grohmann, 1990 and Siphonohydra Salvini-Plawen, 1966. A total of 79 valid species are listed there.
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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) .
