Sagitta bipunctata   Quoy & Gaimard,  1828 (Marine Worm)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chaetognatha
Class: Sagittoidea
Order:Aphragmophora
Family:Sagittidae

Image copyrights: A. Pierrot-Bults

Description
Size: Length up to 19 mm.

Body rigid and opaque. Trunk is about the same width along its length. No gut diverticula. Anterior fins wide and roundish, beginning just behind the ventral ganglion. The posterior fins are wider and longer than the anterior fins and are equally distributed over the body and tail sections. Fins completely rayed. On either side of head 5-10 hooks, 4-8 anterior teeth and 8-16 posterior teeth. There is a prominent collarette from the neck to the anterior fins, between the lateral fins and also between the posterior fins and the seminal vesicles.

Mature ovaries are long and can reach the ventral ganglion. Ova are quite large, irregularly arranges in 1 or 2 rows. The seminal vesicles touch the caudal fins, situated well behind the posterior fins.


Synonym (s)
Sagitta atlantica Gray, 1922
Sagitta californica Bieri, 1957
Sagitta californica Michael, 1913
Sagitta californica Sund, 1961
Sagitta hispida Burfield and Harvey, 1926
Sagitta hispida George, 1952
Sagitta multidentata Hsu, 1943

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Pelagic

Biogeography


• INDIA
• Tamil Nadu, Porto Novo INDIA
• West Coast (Lat: 15) (Long: 69) INDIA (Record: 12/09/1986-26/09/1986)
• West Coast (Lat: 19) (Long: 73) INDIA (Record: 12/09/1986-26/09/1986)

Literature Source(s)
  • Alfred, JRB; Das, AK and Sanyal, AK (Eds.) (1998) Faunal diversity in India ZSI, Calcutta 1-497 Available at - NCL, Pune
  • Venkatraman, K; Srinivasan, M; Satyanarayana, CH and Prabhakar D (2002) Faunal diversity of Gulf of Mannar biosphere reserve Conservation area series 15 ZSI 77 pp; VIII pla Available at - NCL, Pune
  • Omne vivum Available at - http://www.omne-vivum.com/c/18170.htm
  • Nair, VR Chaetognatha NIO, Goa Available at - http://www.nio.org/Biology/Chaetognaths/Chaetognaths.jsp
  • Conway, DVP; White, RG; Hugues-Dit-Ciles, J; Gallienne, CP and Robins, DB (2003) Guide to the coastal and surface zooplankton of the south western Indian Ocean Occasional publication no 15 Marine Biological Association of the United Kingdom Occasional Publication of the Marine Biological association of the United Kingdom 354 pp Available at - http://www.mba.ac.uk/nmbl/publications/occpub/pdf/occ_pub_15.pdf
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • World Biodiversity Database Available at - http://nlbif.eti.uva.nl/bis/
  • Sealifebase Available at - http://www.sealifebase.org/
  • Krishnamurthy, K (1965) Seasonal variation in the plankton of Porto Novo waters (India) Hydrobiologia Springer 29(1-2) 226-238 Available at - http://www.springerlink.com/content/n81g3x442qg28ljn/fulltext.pdf
  • Madhupratap, M; Nair, SRS; Haridas, P and Padmavati, G (1990) Response of zooplankton to physical changes in the environment: coastal upwelling along central west coast of India Journal of coastal research Coastal Education and Reserch Foundation 6 413-426 Available at - http://drs.nio.org/drs/handle/2264/2439
  • Lutschinger, S (1993) The marine fauna of New Zealand: Chaetognatha (Arrow worms) New Zealand Oceanographic Institute Memoir 101 61pp Available at - NIO, Goa

Page last updated on:2011-09-05

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