copepod are the dominant zooplankton biomass in the oceans(e.g., Humes, 1994) and copepod nauplii and copepodites consti-tute the natural food for most marine fish larvae (Hunter, 1981). Forthis reason, copepods are today cultivated for being used as feed fornewly hatched larvae in marine aquaculture systems (Toledo et al.,1999; Støttrup, 2006).