An initial analysis of the characteristics of Antarctic krill taken by the commercial fishery and Antarctic fur seals during the winters of 2002 and 2003 at South Georgia

We present an initial analysis of the fishing locations, fishing depth and length-frequency distribution of krill at South Georgia during the winter of 2002 and 2003 and compare these with the length-frequency distribution and frequency of occurrence of krill in the diet of Antarctic fur seals. There were significant differences in the mean size of krill taken by vessels/measured by observers that should be addressed prior to more detailed analysis, nevertheless there was considerable overlap in the size composition of krill in the fishery and the diet of Antarctic fur seals. During the period of the winter when there was a reduction in the frequency of occurrence of krill in the diet of seals the fishery appeared to operate at greater depth suggesting a possible depth change of krill during winter. It may be appropriate to review the number of krill measured by observers in order to ensure that other sufficient time can be allocated to other activities, especially the assessment of by-catch.