Fisheries science
Print ISSN : 0919-9268
Fatty Acid Compositions in Glycerophospholipids from Brain Lobes of Rainbow Trout, Carp and Skipjack Tuna
Hideki UshioToshiaki OhshimaChiaki Koizumi
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1996 Volume 62 Issue 1 Pages 126-133

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Abstract

The fatty acid composition of glycerophospholipids extracted from certain brain lobes and optic nerves of rainbow trout, a cold freshwater fish, carp, a relatively warmer freshwater fish, and skipjack tuna, a relatively warm seawater fish, was investigated. The telencephalon, optic tectum and cerebellum of all species contained almost similar level of 22:6n-3 in glycerophospholipids, except for the carp telencephalon. Glycerophospholipids of rainbow trout tissues were relatively richer in total levels of monoenoic fatty chains, such as 18:1n-9, 24:1n-9, and 18:1 dimethylacetal, than those of carp and skipjack tuna. These results suggest that the level of 22:6n-3 in glycerophospholipids should be differentiated not by temperature adaptation but by physiological functions of the nervous tissues.

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