Odontosyllis gravelyi   Fauvel,  1928 (Marine Worm)
Organism information awaits expert curation
Class: Polychaeta

Size: Length 15-30 mm. by 1.5-2 mm.

Color: Yellowish white with a longitudinal dark brown dorsal streak running the whole length of the body. On a variable number of anterior segments , a brown dorsal spot at the base of the feet.

Body long, thick, rounded dorsally, very brittle; 80-150 segments. Prostomium sub-rectangular. Four large eyes set in trapezium. 3 tentacles, the median twice as long as the laterals. 2 broad palps. Proboscis with 6-7 large pharyngeal teeth pointing backwards and two large lateral folds. Pharynx extending from the 4th-5th segments to the 10th. Proventriculus twice as long; a rounded flap over the prostomium. 2 pairs of long, unequal, tentacular cirri. Dorsal cirri unjointed, rapidly decreasing in length, about as long as half the body’s breadth. Ventral cirri broad and short. Compound setae of 2 kinds in every foot; the upper ones with a long needle or awl-like terminal piece, slightly flattened, very indistinctly bifid and bulbous at the tip; the lower ones much more numerous, with an enlarged shaft and a short bidentate appendix. On the last segments, a small dorsal simple seta, slightly bent and a ventral simple bifid seta. Mature specimens with long swimming bristles. Two long anal cirri.

Synonym (s)
Odontosyllis gravelyi Fauvel, 1930

Common Name (s)
Economic Importance and Threats

Habitat:  Demersal, Estuarine


• Tamil Nadu, Gulf of Mannar INDIA
• Tamil Nadu, Krusadai Island INDIA
• Kerala, Kochi Backwaters INDIA (Record: 1981)

Literature Source(s)
  • Fauvel, P (1953) The fauna of India including Pakistan, Ceylon, Burma and Malaya: Annelida, Polychaeta The Indian press ltd., Allahabad 507 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Sealifebase Available at - http://www.sealifebase.org/
  • Sarala Devi, K., Jayalakshmi, KV and Venugopal, P. (1991) Communities and coexistance of benthose in northern limb of Cochin backwaters Indian Journal of Marine Sciences 20 249-254 Available at - NIO, Goa
  • James, PSBR ; Thomas, PA ; Pillai, CSG and Achari Kumaraswamy, GP (1969) Catalogue of types and of sponges, corals, polychaetes, crabs and echinoderms in the reference collections of the Central Marine Fisheries Research Institute Bulletin of Central Marine Research Institute CMFRI, Cochin 7 1-66 Available at - http://eprints.cmfri.org.in/567/1/Bulletin_7.pdf

Page last updated on:2011-03-15

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