Growth rates of larval Antarctic krill in mid-winter in the Marguerite Bay region

Langdon Quetin and Robin Ross

Ten instantaneous growth rate experiments were conducted over a month-long period to document growth rates of larval Antarctic krill in mid-winter. Total phaeopigment content of larvae collected at the same sites was compared to phaeopigment content of larvae of known feeding history. Low and negative growth rates were consistent with the low phaeopigment content in the larvae immediately after collection. Total length, wet weight, dry weight and organic carbon relationships will allow us to calculate production or loss of somatic tissue.