Pandeidae
| Pandeidae | ||||||||||||
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Neoturris pileata |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Pandeidae | ||||||||||||
| Haeckel , 1879 |
The Pandeidae are a marine family of the Hydrozoa (Hydrozoa). The family currently includes around 75 species. The genus Hydrichthys also contains species that parasitize on the heads of fish.
features
The hydroid polyps are usually stolonal and rarely branched. A perisarc can be developed to a certain extent or it can be absent. Occasionally it forms a pseudohydrotheque. The tentacles of the hydrant are filiform, which are usually arranged in a wreath, exceptionally in two or more wreaths. But they can also be evenly distributed or even absent. Reproduction occurs asexually by budding and sexually mainly via medusa . The umbrella is tall, bell-shaped with or without an apical extension. The manubrium is roughly square and usually relatively large. There may be a gastral stalk. The manubrium has four simple, serrated or complexly folded lips. There are four, exceptionally eight radial channels, which are often wide and band-like. Mesenteries are present or may be absent. The gonads sit on the manubrium in an interradial position, sometimes they also extend along the radial canals. But they can also be completely in a perradial position. They can be smooth or complexly folded. There are two or more hollow edge tentacles. The tubers are usually conical or elongated, with or without rudimentary tentacles. Ocelli can be present or absent. The cnidome consists of microbasic euryteles.
Geographical occurrence
The representatives of the family are common in all seas worldwide.
Systematics
The Hydrozoa Directory provides 23 genera to the family. Two other genera have already been identified by Boero et al. (1991) placed as a family.
- Amphinema Haeckel, 1879
- Annatiara Russell, 1940
- Barnettia Schuchert, 1996
- Catablema Haeckel, 1879
- Cirrhitiara Hartlaub, 1914
- Codonorchis Haeckel, 1879
- Eutiara Bigelow, 1918
- Geomackiea Mills, 1985
- Halitholus Hartlaub, 1914
- Hydrichthys Fewkes, 1887
- Ichthyocodium Jungersen, 1912
- Larsonia Boero, Bouillon & Gravili, 1991
- Leuckartiara Hartlaub, 1914
- Merga Hartlaub, 1914 (including Janiopsis Bouillon, 1980 non Janiopsis Rovereto 1899)
- Neoturris Hartlaub, 1914
- Nudiclava Lloyd, 1907
- Octotiara Kramp, 1953
- Pandea Lesson, 1837
- Pandeopsis Kramp, 1959
- Pelagiana Borstad & Brinckmann-Voss, 1979
- Perigonella Stechow, 1921
- Stomotoca Agassiz, 1862
- Timoides Bigelow, 1904
- Zanclonia Hartlaub, 1914
swell
literature
- Jean Bouillon and Fernando Boero: Synopsis of the families and genera of the hydromedusae of the world, with a list of worldwide species. Thalassia Salentina, 24, 47-296, Galatina 2000 ISSN 0563-3745 PDF
- 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
On-line
Individual evidence
- ↑ a b see Ferdinando Boero, Jean Bouillon and Cinzia Gravilli: The life cycle of Hydrichthys mirus (Cnidaria: Hydrozoa: Anthomedusae: Pandeidae). Zoological Journal of the Linnean Society, 101 (2): 189-199, London 1991 doi : 10.1111 / j.1096-3642.1991.tb00893.x
- ↑ World Hydrozoa Database - Janiopsis
