Changes in the lipid composition of Acanthephyra purpurea Milne Edwards (Crustacea: Decapoda) during its diurnal migration: A preliminary investigation

The lipids of the mesopelagic decapod Acanthephyra purpurea Milne Edwards have been studied in relation to its diurnal vertical migration. The total lipid content increased between midnight and early morning, and both the triglyceride and wax ester fractions showed considerable variation in amount. There was a significant increase in the phospholipid content during its period in deep water, suggesting a diurnal rhythm of lipid metabolism associated with the migratory rhythm.