Updated assessments and projections under alternative future catch levels for the horse mackerel resource

Furman, Liam B; Butterworth, Doug S

Updated assessments and projections under alternative future catch levels for the horse mackerel resource

Working Paper

2011

Publisher

University of Cape Town

Department

Marine Resource Assessment and Management Group

Faculty

Faculty of Science

Abstract

The age-structured production model assessment of Johnston and Butterworth (2007) is updated to take account of further catch and survey data. In addition length-frequency data from surveys and the Desert Diamond, and a GLM standardised CPUE series from the Desert Diamond are now included when fitting the model to the data. The assessments do indicate an increase in abundance of about 20% over the last five years, primarily as a result of good recruitment. However, long term projections under different levels of future catches remain fairly similar to those of Johnston and Butterworth (2007).

Keywords

horse mackerel resource

Updated assessments

Reference:

Collections

Working Papers

Full item page