Canalipalpata

Canalipalpata
Spirobranchus giganteus , East Timor
Systematics
Empire : Animals (Animalia) Over trunk : Lophotrochozoa (Lophotrochozoa) Trunk : Annelids (Annelida) Class : Polychaete (Polychaeta) Subclass : Palpata Order : Canalipalpata
Scientific name
Canalipalpata
Rouse & Fauchald 1997

Canalipalpata is the name of an order of mostly sessile and tube -building polychaeta (polychaeta) living as filter feeders in the subclass Palpata , which can be found in seas worldwide.

features

The Canalipalpata have neither teeth nor jaws. On their palps , which are sitting on the prostomium , there is an eyelash groove with numerous cilia , with which small food particles, mostly detritus , caught from the water are transported to the mouth. The palps have a U-shaped cross-section through the eyelash groove. Only in the Siboglinidae , which feed themselves exclusively through a symbiosis with bacteria and therefore do not need any outside nutrition, these eyelash grooves are missing.

Distribution, habitat and way of life

The Spionida are widespread in oceans worldwide and live on both soft and hard substrates, where they build their living tubes and thus live as sessile animals . They feed the filter feeders of detritus and phytoplankton , which they catch with their palps of the ocean current and transport with eyelashes activity on the palps to mouth.

Systematics

According to the systematics according to Rouse & Fauchald from 1998 , the order Canalipalpata and its sister group , the Aciculata , form the subclass Palpata .

According to this system, the order Canalipalpata includes the suborders Sabellida , Terebellida and Spionida with the following families :

• Sabellida
  • Siboglinidae (former animal phyla Pogonophora and Vestimentifera)
  • Sabellariidae
  • Sabellidae
  • Serpulidae
  • Oweniidae
• Terebellida
  • Acrocirridae
  • Flabelligeridae
  • Cirratulidae
  • Alvinellidae
  • Ampharetidae
  • Pectinariidae
  • Terebellidae
  • Trichobranchidae
• Spionida
  • Apistobranchidae
  • Spionidae
  • Trochochaetidae
  • Longosomatidae
  • Magelonidae
  • Poecilochaetidae
  • Chaetopteridae

literature

• Stanley J. Edmonds: Fauna of Australia, Volume 4A. Polychaetes & Allies. The Southern Synthesis 4. Commonwealth of Australia, 2000. Class Polychaeta. P. 233, Canalipalpata.
• Gregory W. Rouse, Kristian Fauchald (1998): Recent views on the status, delineation, and classification of the Annelida. (PDF). American Zoologist. 38 (6), pp. 953-964. doi: 10.1093 / icb / 38.6.953
• Peter Ax: The system of Metazoa II. A textbook on phylogenetic systematics. Gustav Fischer Verlag, Stuttgart / Jena 1999. pp. 47–56, chapter Polychaeta : Aciculata - Canalipalpata , p. 52.

Web links

Commons : Canalipalpata  - collection of images, videos and audio files

• Fredrik Pleijel and Gregory W. Rouse: Canalipalpata. In: The Tree of Life Web Project, 2004.