Between July 2005 and March 2007, eight Catch Assessment Surveys (CASs)
have been conducted at 54 pre-selected fish landing sites in the Ugandan part
of Lake Victoria comprising approximately 10% of all landing sites in each of
the 11 districts sharing the lake. The CASs were conducted following regionally
harmonised Standard Operating Procedures (SOPs). This report covers the
CAS conducted in March 2007 and puts into context the trends generated by
results of the previous surveys.
The catch rates of Nile perch in gillnetting boats with motor/sail, which are able
to operate in distant waters, decreased from 30.6 kg boat-1 day-1 observed in the December 2006 survey to 21.5 kg boat-1 day-1 in March 2007.