Sagitta pacifica   Tokioka,  1940 (Marine Worm)
Organism information awaits expert curation
Class: Sagittoidea

Image copyrights: A. Pierrot-Bults

Size: Maximum adult body length 14 mm; tail 22-28%.

Body slender; transversal musculature absent; head narrow; hooks serrated, both in juveniles and in adults. Fin bridge absent. Anterior fins of medium length, fully rayed, rounded; posterior fins of medium length, partially rayed, angular. Collarette absent; gut diverticula absent. Large eyes, with T-shaped pigment spot. Seminal vesicles with knob and trunk; position of seminal vesicles: touching, or close to, posterior fins and well separated from tail fin. Ovaries of medium length, reaching to region of ventral ganglion; ova large. Adhesive papillae and adhesive organs absent. Apical glands absent. Hooks: 5-8; anterior teeth: 7-13; posterior teeth: 16-24.

Synonym (s)
Sagitta serratodentata Beraneck, 1895
Sagitta serratodentata Burfied and Harvey, 1926
Sagitta serratodentata Burfield, 1950
Sagitta serratodentata Furuhashi, 1953
Sagitta serratodentata Ghirardelli, 1947
Sagitta serratodentata Hida, 1957
Sagitta serratodentata Johnston and Taylor, 1919
Sagitta serratodentata Michael, 1911
Sagitta serratodentata Rao, 1958
Sagitta serratodentata Schilp, 1941
Sagitta serratodentata Serene, 1937
Sagitta serratodentata Tokioka, 1939
Sagitta serratodentata pacifica Furuhashi, 1961
Sagitta serratodentata pacifica Hamon, 1956
Sagitta serratodentata pacifica Murakami, 1959
Sagitta serratodentata pacifica Tokioka, 1940
Sagitta serratodentata pacifica type Rao and Ganapati, 1958
Sagitta serratodentata pacifica type Thompson, 1947
Sagitta serratodentata (variety pacifica Rao, 1958
Sagitta serratodentata f. pacifica Baldasseroni, 1915

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Chennai Coast INDIA (Record: 2008)
• Kerala, Off Vizhinjam INDIA (Record: 01/1990-12/1990)
• Tamil Nadu, Gulf of Mannar INDIA (Record: 1999)
• Bay of Bengal INDIA

Literature Source(s)
  • Nair, VR Chaetognatha NIO, Goa Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • 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 -
  • 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 -
  • 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
  • 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 -

Page last updated on:2011-06-24

Back to Search