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Cirratulidae

provided by wikipedia EN

Cirratulidae is a family of marine polychaete worms. Members of the family are found worldwide, mostly living in mud or rock crevices.[2] Most are deposit feeders, but some graze on algae or are suspension feeders.[1]

Description

Cirratulids vary in size from one to twenty centimetres long. They are mostly burrowers in soft sediments but some live in rock crevices. The head is conical or wedge-shaped and has no antennae. The body is generally cylindrical, tapering at both ends. Cirratulids are characterised by a large number of simple elongate filaments along the body. Some of these occur as an anterior cluster of tentacles, grooved for deposit-feeding, but the majority, the branchiae, are found one pair per segment, and do not have grooves. The chaetae (bristles) are simple capillaries, usually with hooks, and emerge directly from the body wall. There are no anal cirri (slender sensory appendages). The worm is usually buried with only the writhing branchial filaments visible.[2][3] Some cirratulids can build tubes of calcium carbonate.[4]

When alive, the body, branchiae and tentacular filaments are often red, orange or yellow, though species of Dodecaceria are dark green or black. Terebellidae and other worm families may superficially look similar to cirratulids with a mass of filaments. However, in terebellids, the filaments arise from the mouth or are restricted to the anterior three segments, whereas cirratulid branchiae occur throughout the body, one pair per segment.[5]

Taxonomy

The genera are poorly defined and Blake undertook a partial revision in 1996. He divided them into three groups, the multi-tentaculate genera such as Cirratulus and Cirriformia, the bi-tentaculate soft-substrate genera such as Caulleriella, Chaetozone, Tharyx and the bi-tentaculate hard substrate genera such as Dodecaceria.[6]

There is considerable confusion as to the phylogenetic relationships in the family and Blake suggests that many species with global distributions will be found to represent species complexes within which some species are presently undescribed.[6]

Genera

References

  1. ^ a b World Register of Marine Species
  2. ^ a b Marine Species Identification Portal
  3. ^ Cirratulidae
  4. ^ Vinn, O. (2009). "The ultrastructure of calcareous cirratulid (Polychaeta, Annelida) tubes" (PDF). Estonian Journal of Earth Sciences. 58 (2): 153–156. doi:10.3176/earth.2009.2.06. Retrieved 2012-09-16.
  5. ^ Polychaetes:Cirratulidae Archived 2011-09-29 at the Wayback Machine
  6. ^ a b Blake, J.A. (1996). Family Cirratulidae Ryckholdt, 1851. pp. 263-384 in Blake, J.A., Hilbig, B. & Scott, P.H. (eds) The Annelida. Part 3 Polychaeta: Orbiniidae to Cossuridae. Vol. 6. Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and western Santa Barbara Channel. Santa Barbara Museum of Natural History : Santa Barbara, California
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Cirratulidae: Brief Summary

provided by wikipedia EN

Cirratulidae is a family of marine polychaete worms. Members of the family are found worldwide, mostly living in mud or rock crevices. Most are deposit feeders, but some graze on algae or are suspension feeders.

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Classification

provided by World Register of Marine Species
Pseudocirratulus Augener, 1922 is moved to Polychaeta Incertae sedis as it is not a Cirratulidae and its affinities are uncertain (Petersen, 1994)

Reference

Petersen, Mary E. 1994. [Abstract only] Pseudocirratulus kingstonensis Augener, 1922: not a cirratulid but an annelid of uncertain affinities (Polychaeta?: Pseudocirratulida new order, Pseudocirratulidae new family). Mémoires du Muséum national D'histoire naturelle 162: 634.

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bibliographic citation
Fauchald, K. (1977). The polychaete worms, definitions and keys to the orders, families and genera. <em>Natural History Museum of Los Angeles County: Los Angeles, CA (USA), Science Series.</em> 28:1-188. Petersen, Mary E. 1994. [Abstract only] Pseudocirratulus kingstonensis Augener, 1922: not a cirratulid but an annelid of uncertain affinities (Polychaeta?: Pseudocirratulida new order, Pseudocirratulidae new family). Mémoires du Muséum national D'histoire naturelle 162: 634. Rosenberg, G.; Petit, R. E. (1987). Ryckholt's <i>Mélanges Paléontologiques</i>, 1851-1862, with a new name for <i>Tudicula</i> H. & A. Adams, non Ryckholt. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 139: 53-64. Blake, J.A. 1996. Family Cirratulidae Ryckholdt, 1851. Including a revision of the genera and species from the eastern North Pacific. pages 263-384. IN: Blake, James A.; Hilbig, Brigitte; and Scott, Paul H. Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel. 6 - The Annelida Part 3. Polychaeta: Orbiniidae to Cossuridae. Santa Barbara Museum of Natural History. Santa Barbara Carus, J. Victor 1863. Vermes, in W. C. H. Peters, J.V. Carus and C.E.A. Gerstäcker eds., Handbuch der zoologie: Leipzig, Wilhelm Engelmann, p. 422-484. Ryckholt, Philippe de (Baron). (1851). Mélanges paléontologiques. Part 1. <em>Memoires Couronnes et Memoires des Savants Etrangers de l'Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique.</em> 24: 1-176, plates 1-10.
Contributor
Read, Geoffrey, G.B.

Classification

provided by World Register of Marine Species
Placed under Spionida
license
cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Fauchald, K. (1977). The polychaete worms, definitions and keys to the orders, families and genera. <em>Natural History Museum of Los Angeles County: Los Angeles, CA (USA), Science Series.</em> 28:1-188. Petersen, Mary E. 1994. [Abstract only] Pseudocirratulus kingstonensis Augener, 1922: not a cirratulid but an annelid of uncertain affinities (Polychaeta?: Pseudocirratulida new order, Pseudocirratulidae new family). Mémoires du Muséum national D'histoire naturelle 162: 634. Rosenberg, G.; Petit, R. E. (1987). Ryckholt's <i>Mélanges Paléontologiques</i>, 1851-1862, with a new name for <i>Tudicula</i> H. & A. Adams, non Ryckholt. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 139: 53-64. Blake, J.A. 1996. Family Cirratulidae Ryckholdt, 1851. Including a revision of the genera and species from the eastern North Pacific. pages 263-384. IN: Blake, James A.; Hilbig, Brigitte; and Scott, Paul H. Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel. 6 - The Annelida Part 3. Polychaeta: Orbiniidae to Cossuridae. Santa Barbara Museum of Natural History. Santa Barbara Carus, J. Victor 1863. Vermes, in W. C. H. Peters, J.V. Carus and C.E.A. Gerstäcker eds., Handbuch der zoologie: Leipzig, Wilhelm Engelmann, p. 422-484. Ryckholt, Philippe de (Baron). (1851). Mélanges paléontologiques. Part 1. <em>Memoires Couronnes et Memoires des Savants Etrangers de l'Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique.</em> 24: 1-176, plates 1-10.
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