Download FAR 2023/36 Relative abundance, size and age structure, and stock status of blue cod off south Otago in 2022

This report describes the results of the random-site potting survey for blue cod (Parapercis colias) off south Otago in March–April 2022. Estimates are provided for population abundance, size and age structure, sex ratio, total mortality (Z), and fishing mortality (F). The 2022 potting survey was the fourth in the south Otago time series, with previous surveys in 2010, 2013, and 2018. The 2010 survey was a dual random-site and fixed-site experimental survey in three of the six strata; and 2013 and 2018 were solely random-site surveys in all six strata.