1983 年 49 巻 9 号 p. 1459-1464
The fatty acid composition of total lipids extracted from the muscles and viscera of wild and cultured ayu (sweet smelt), caught monthly from May to November, was investigated.
It was noticed that the content of C15:0, C17:1, C18:3, C20:5, and C22:5 was higher in the lipids of wild ayu, and that of C18:1 and C18:2 in the cultured ayu. The composition of fatty acids differed slightly during the maturation period after summer; but the decrease of C14:0 and C16:1 and the increase of C20:5 and C22:6 in the viscera of wild ayu were remarkable.
The lipids of wild and cultured ayu seemed to be affected by those of sessile algae and commercial diet, respectively.