These reports contain scientiric and technical information that represents an important contribution to existing knowledge but which for some reason may not be appropriate for primary scientific (i.e Journal) publication. Technical Reports are directed primarily towards a world wide Cludience and hClve an international distribution. No restriction is placed on subject mClller and the series reflects the broad interests nnd policies of the Fisheries and Mmine Service, namely, flsheries IllCln,lgement, technology and development, ocean sciences and nquatic environ ments relevant to ClnClda. TechnicClI Reports mClY be cited as full 11ublicntions. The correct cit'ltion appeClrs above the Clbstract of each report. Each report will be abstra...