This project reports on: 1) our detailed evaluation of current methodologies for otolith chemical analysis, and our recommended procedures when electron probe microanalysis is used for stock delineation in finfish 2) our assessment of the accuracy and precision of otolith probe microanalysis...

1 A method was developed to rapidly assess the effectiveness of trap designs and identify the causes of differences in effectiveness. 2 Fish entry and escape probabilities are correlated across trap designs. The probabilities are very high for '0' and 'S' trap designs and are much lower for the 'Z'...