Doryteuthis sibogae   (Adams,  1954) (Squid)
Organism information awaits expert curation
Class: Cephalopoda

Size: 90mm- 153mm

Mantle is slender and cylindrical; widest about the middle, the mantle tapers from the point of insertion of fins and ends in a blunt point posteriorly. On the dorsal side the anterior margin of the mantle is produced in the middle to a pointed lobe; the ventral margin is emarginated beneath the funnel. No ridge is present along the mid ventral line; a pair of light organs are present, one on either side of the ink sac.
Fins are rhombic in shape; the anterior margins are slightly convex and the posterior margins almost straight.
Head is small, slightly longer than wide both in male and female. Eyes are large with the membrane covering the eye. The funnel is short and thick, and the anterior free end reaches up to the anterior margin of the eye.The oral arms are short. All arms are keeled and slightly compressed. The third arm is the largest, and its aboral keel is well developed in the form of a swimming membrane; all the arms are with protective membrane; suckers are biserially arranged on the oral arms and they are small in size The horny ring of the largest sucker has 5 to 9 blunt, squarish teeth on the distal half; the proximal half is smooth or sometimes wavy; the lateral teeth are slightly broader, but shorter than the distal teeth. In males, the left ventral arm is distinctly hectocotylized.
The tentacles are very slender with short and moderately expanded clubs; the club has feebly developed swimming membrane on either side. There are seven buccal lappets around the mouth and each one possesses 5-11 minute suckers at the tip on the oral side. The rostrum of the upper beak is narrow, sharp and deeply curved; the insertion wing is very broad; in the lower beak the rostrum, rostral wing and the insertion wing are narrow The gladius is narrow, with almost straight margins. The vane of the gladius is broader at the anterior region, tapering sharply to the posterior end. The gladius of female is slightly wider than that of the male. There are five distinct ribs on the vane, one thick median, two lateral and two marginal, of which the median and the two lateral ribs extend on to the rachis which is triangularly pointed at the anterior end.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Kerala, Vizhinjam (Lat: 8.37) (Long: 76.95) INDIA
• Tamil Nadu, Chennai (Lat: 13.09) (Long: 80.29) INDIA
• Kerala, Trivandrum (Lat: 8.5) (Long: 76.91) INDIA
• Kerala, Vizhinjam Bay INDIA
• Kerala, Trivandrum INDIA
• Tamil Nadu, Kasimode INDIA

Literature Source(s)
  • Rao, DVS (2005) Comprehensive review of the records of the biota of the Indian Seas and the introduction of non-indigenous species Aquatic Conservation: Marine and Freshwater Ecosystems John Wiley and Sons, Ltd. 15(2) 117-146 Available at -
  • Integrated Taxonomic Information System (ITIS) Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Silas, EG; Prabhakaran K; Nair and Sarvesan R (1985) New record of a Loliginid squid, Doryteuthis sibogae Adam 1954, Cephalopoda; Loliginidae), from Indian waters. Indian Journal of Fisheries Indian Journal of Fisheries for the Indian Council of Agricultural Research, Cochin, India 32(3) 281-287 Available at -
  • Silas, EG; Sarvesan, R; Rao, KS; Nair, KP and Meiyappan, MM (1985) Identity of common species of cephalopods of India Cephalopod bionomics, fisheries and resources of the exclusive economic zone of India Bulletin of Central Marine Research Institute CMFRI 37 13-37 Available at -
  • Pillai, PKM and Augustine, SK (2000) A code list of common marine living resources of the Indian seas CMFRI Special Publication No.12 CMFRI 1-115 Available at -

Page last updated on:2011-12-19

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