Sagitta robusta   Doncaster,  1903 (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: Maximum adult body length 12 mm; tail 27-28%.

Body firm, opaque; transversal musculature absent; head wide; hooks not serrated. Fin bridge absent. Anterior fins of medium length, fully rayed, rounded; posterior fins of medium length, fully rayed, angular. Collarette long; gut diverticula present. Small eyes, with T-shaped pigment spot. Seminal vesicles with knob and trunk; position of seminal vesicles: touching both posterior fins and tail fin. Ovaries long, reaching neck region; ova small. Adhesive papillae and adhesive organs absent. Apical glands absent. Hooks: 7-8; anterior teeth: 6-9; posterior teeth: 10-15.


Synonym (s)
Sagitta ferox Bieri, 1957
Sagitta ferox Sund, 1961
Sagitta ferox Sund and Renner, 1959
Sagitta ferox Tokioka, 1959
Sagitta ferox americana Tokioka, 1959
Sagitta hispida Aida, 1897
Sagitta hispida Michael, 1911
Sagitta hispida Rao, 1958
Sagitta hispida Rao and Ganapati, 1958

Common Name (s)
Economic Importance and Threats

Ecology

Biogeography


• Tamil Nadu, Chennai Coast INDIA
• Kerala, Off Vizhinjam INDIA (Record: 01/1990-12/1990)
• Tamil Nadu, Gulf of Mannar INDIA
• Maharashtra, Mumbai INDIA
• Maharashtra, Off Mumbai INDIA
• Palk Bay INDIA (Record: 01/1955-12/1958)
• Tamil Nadu, Gulf of Mannar INDIA (Record: 01/1955-12/1958)
• Bay of Bengal INDIA

Literature Source(s)
  • Nair, VR Chaetognatha NIO, Goa Available at - http://www.nio.org/Biology/Chaetognaths/Chaetognaths.jsp
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at - http://tnenvis.nic.in/PDF/coastal%20data.pdf
  • George, RM; Thomas, PA; Jasmine, S; Nair, KR and Vasanthakumar, R (1998) Observations on the distribution and seasonal fluctuations of chaetognaths off Vizhinjam, southwest coast of India Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 40(1&2) 6-10 Available at - NIO, Goa
  • Pierrot-Bults, A (2004) Chaetognatha of the world World biodiversity database Available at - http://nlbif.eti.uva.nl/bis/chaetognatha.php?menuentry=zoeken
  • Maruthanayagam, C and Subramanian, P (1999) Bio-chemical variation of zooplankton population Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 41(1&2) 111-115 Available at - NIO, Goa
  • Nair, VR; Gajbhiye, SN and Desai, BN (1991) Effect of pollution on the distribution of chaetognaths in the nearshore waters of Bombay. Indian Journal of Marine Sciences 20(1) 43-48 Available at - NIO, Goa
  • Nair, VR and Ramaiah, N (1998) Zooplankton characteristics of the coastal ecosystem off Bombay, India Proceedings of the 2nd International Conference In: Pelagic Biogeography ICoPB II 272-278 Available at - NIO, Goa
  • Sudarsan, D (1961) Observations on the chaetognatha of the waters around Mandapam Indian Journal of Fisheries Indian Council of Agricultural Research 8 (2) 364-382 Available at - http://eprints.cmfri.org.in/1973/1/Article_06.pdf
  • Pierrot-Bults, A (2004) Chaetognatha of the world World biodiversity database Available at - http://nlbif.eti.uva.nl/bis/chaetognatha.php?menuentry=zoeken
  • Jitlang, I; Pattarajinda, S; Mishra, R and Wongrat, L (2007) Composition, Abundance and Distribution of Zooplankton in the Bay of Bengal The Ecosystem-Based Fishery Management in the Bay of Bengal 65-92 Available at - http://map.seafdec.org/downloads/BIMSTEC/010-Zooplankton-Issaporn.pdf
  • Patel, MI (1976) Seasonal variation in zooplankton from the coastal waters of Saurashtra Indian Journal of Marine Sciences Scientific Publishers 5(1) 140-144 Available at - NIO, Goa

Page last updated on:2011-07-18

Back to Search