Hepatic Fatty Acids in Wild Rockhopper (Eudyptes crestatus) and Magellanic (Spheniscus magellanicus) Penguins before and after Moulting(Biochemistry)

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Intra- and inter-species hepatic differences for wild rockhopper (Eudyptes crestatus) and magellanic (Spheniscus magellanicus) penguin fatty acids were compared both pre-and post-moult. Linoleic (18:2n-6) and arachidonic (20:4n-6) acid composition were significantly higher and palmitic (16:0) acid significantly lower in pre moult rockhopper penguins than in comparable magellanics. Post-moult magellanics had significantly more palmitoleic (16:1), gadoleic (20:1n-9) and erucic, (22:1n-9) and less arachidonic and eicosapentaenoic (20:5n-3) percent fatty acids than post-moult rockhoppers. In both species moulting resulted in a significant reduction in eicosapentaenoic and docosapentaenoic (22:5n-3), and a significant increase in linoleic acid (18:2n-6) percent. In rockhoppers, post moult was associated with an increase in the proportion of palmitic (16:0) and a decrease in palmitoleic (16:1) acid. In the post-moult magellanics, however, there was a decrease in stearic (18:0) and an increase in gadoleic (20:1n-9) and erucic (22:1n-9) fatty acid composition.
社団法人日本動物学会の論文
1992-04-15