Metabolic strategy in pelagic squid of genus Sthenoteuthis (Ommastrephidae) as the basis of high abundance and productivity. An overview of the Soviet investigations

Shulman G., Chesalin M., Abolmasova G., Yuneva T., Kideys A.

BULLETIN OF MARINE SCIENCE, vol.71, no.2, pp.815-836, 2002 (Peer-Reviewed Journal) identifier

  • Publication Type: Article / Article
  • Volume: 71 Issue: 2
  • Publication Date: 2002
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.815-836


The long-term investigations of nektonic squid Sthenoteuthis pteropus and Sthenoteuthis oualaniensis (between 1978 and 1990) have revealed some special features in a metabolism of these animals. These are: (1) rate of energy expenditure is very high (coefficient V in equation Q = aW(k) is from 3.1 to 4.7 at 26degrees to 30degreesC (more than that of other fast swimming animals); (2) hepatopancreatic index is about 4% wet body weight, twice that of actively swimming fishes; (3) protein is the main substrate for energy metabolism; (4) the polyenoic fatty acid 22:6w3 in phospholipids of squid muscle is 42.6 to 45.7% of fatty acids (more than in the most active marine animals); (5) the large proportion of anaerobic metabolism of nitrogenous substances in energy metabolism enables the squid to inhabit zones of very low oxygen concentration.