Hydrocorynidae

from Wikipedia, the free encyclopedia
Hydrocorynidae
Hydrocoryne miurensis

Hydrocoryne miurensis

Systematics
Trunk : Cnidarians (Cnidaria)
Class : Hydrozoa (Hydrozoa)
Subclass : Hydroidolina
Order : Anthoathecata
Subordination : Capitata
Family : Hydrocorynidae
Scientific name
Hydrocorynidae
Rees , 1957

The Hydrocorynidae 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 five species in two genera .

features

The hydroid polyps form colonies with a chitinized, stolonal hydrorhiza plate. The hydrant are columnar, mostly relatively large with a thickened mesogloeal lamella, which has a longitudinal back. The tentacles are hollow and capitat, with a wreath of tentacles or five to six wreaths of tentacles standing closely together over the conical hypostome . The gonophores sit in groups at the base of the hydrant or develop from the hydrorhiza; they are free medusas or eumedusoids.

The medusa has an even, strongly curved umbrella with four edge tentacles. These are irregularly covered with nettle cell tubercles and show a slight thickening at the end of the tentacle. A gastric stalk may or may not be present. The tentacle buds are covered with ocelli . The manubrium is bottle-shaped or tubular, square or cross-shaped. The basal part of the manubrium is cross-shaped and may be occupied with groups of stinging cells. The gonads start interradially and encompass almost the entire manubrium.

Geographical distribution and occurrence

The previously known species of Hydrocorynidae originate from the coastal areas of the East and West Pacific. The polyps live there in the deeper intertidal to shallow subtidal .

Systematics

The "World Hydrozoa Datadase" currently lists only five species, which are divided into two genera.

swell

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

On-line

Individual evidence

  1. ↑ World Hydrozoa Database [1]

Web links

Commons : Hydrocorynidae  - Collection of images, videos, and audio files