Sagitta hexaptera   d'Orbigny,  1843 (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 70 mm; tail 16-20 %

Body flaccid, transparent; transversal musculature absent; head of medium width; hooks not serrated. Fin bridge absent. Anterior fins very short, partially rayed, round; posterior fins short, partially rayed, angular. Collarette absent; gut diverticula absent. Small eyes, with small round pigment spot. Seminal vesicles round; position of seminal vesicles: touching tail fin, well separated from posterior fins. Ovaries of medium length, reaching to region of ventral ganglion; ova small. Adhesive papillae and adhesive organs absent. Apical glands absent. Hooks: 7-10; anterior teeth: 3-5; posterior teeth: 0-6.


Synonym (s)
Sagitta gazellae Furnestin, 1953
Sagitta hexaptera f. magna Germain and Joubin, 1916

Common Name (s)
Economic Importance and Threats

Ecology

Biogeography


• Tamil Nadu, Chennai Coast INDIA (Record: 2008)
• Bay of Bengal INDIA

Literature Source(s)
  • Alfred, JRB; Das, AK and Sanyal, AK (Eds.) (1998) Faunal diversity in India ZSI, Calcutta 1-497 Available at - NCL, Pune
  • 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
  • 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

Page last updated on:2011-06-24

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