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, cilt.71, sa.2, ss.815-836, 2002 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 71 Sayı: 2
- Basım Tarihi: 2002
- Dergi Adı: BULLETIN OF MARINE SCIENCE
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.815-836
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
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.