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

Date

2002-09-01

Author

Shulman, GE
Chesalin, MV
Abolmasova, GI
Yuneva, TV
Kıdeyş, Ahmet Erkan

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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.

Subject Keywords

Temperature, Cephalopods, Growth, Fatty-acids, Loligo-opalescens, Energy-metabolism, Oxygen-consumption, Nitrogen-excretion, Respiratory metabolism, Mantle muscle

URI

https://hdl.handle.net/11511/54110

Journal

BULLETIN OF MARINE SCIENCE

Collections

Graduate School of Marine Sciences, Article

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Citation Formats

G. Shulman, M. Chesalin, G. Abolmasova, T. Yuneva, and A. E. Kıdeyş, “Metabolic strategy in pelagic squid of genus Sthenoteuthis (Ommastrephidae) as the basis of high abundance and productivity. An overview of the Soviet investigations,” BULLETIN OF MARINE SCIENCE, pp. 815–836, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54110.