Download FAR 2022/30 Modelling the length frequency of red rock lobsters (Jasus edwardsii) in New Zealand

In the past, commercial catch length frequency (LF) data for New Zealand red rock lobster stocks were processed as empirical LFs and a subjective equation was used to derive a measure of uncertainty for each LF. This document describes the development of a methodology for predicting LFs and associated uncertainty using a model and data collected by the observer catch sampling and voluntary logbook programmes. This methodology is applied to two Quota Management Areas (CRA 2 and CRA 3).