Lipids in Acanthodiaptomus denticomis during starvation and fed on three different algae

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Abstract
Variations in the levels of triglycerides, wax esters and polar lipids were determined in adults of the calanoid copepod Acanthodiaptomus denticornis when freshly caught, starved or fed on the following algae: Anabaena spiroides, Cyclotella pseudostelligera and Pediastrum duplex. Over 7 days starvation, triglycerides and wax esters were almost entirely used up by the copepods. Subsequent feeding over 20 days partially restored triglycerides but restored only a relatively small fraction (Cyclotella pseudostelligera or Pediastrum duplex than in those feeding on Anabaena spiroides. Fatty acid composition of neutral lipids was closely linked to fatty acid composition of algae. The results suggest that lipid and fatty acid contents of Acanthodiaptomus denticornis are good indices of the copepod's nutritional status and short-term (0–20 days) feeding history.

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