Nature, origin and possible roles of lipid deposits in Maurolicus muelleri (Gmelin) and Benthosema glaciale (Reinhart) from Ullsfjorden, northern Norway

Falk-Petersen, I-B.; Falk-Petersen, S.; Sargent, JR.

Polar Biology 54: 235-240

1986


ISSN/ISBN: 0722-4060
DOI: 10.1007/bf00446091
Accession: 021394560

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Abstract
The lipid-rich pelagic teleost Maurolicus muelleri has large lipid depots located subcutaneously, intramuscularly and around the digestive tract. The lipid is contained within conventional adipocytes and is composed largely of triacylglycerols rich in 20:1 (n-9) and 22:1 (n-11) fatty acids. A similar situation holds for the lipid-rich mesopelagic teleost Benthosema glaciale, except that the lipid is predominantly wax esters whose fatty alcohols and fatty acids are both rich in 20:1 (n-9) and 22:1 (n-11) moieties. An origin for the lipids of both species in the wax esters of calanoid copepods is indicated. The anatomical distribution of the lipids in these teleosts and their intracellular location point to their being fundamentally an energy store. The twin roles of neutral lipids in providing metabolic energy and buoyancy are discussed.

Nature, origin and possible roles of lipid deposits in Maurolicus muelleri (Gmelin) and Benthosema glaciale (Reinhart) from Ullsfjorden, northern Norway