Fisheries Infosite

FAR 2018/13 - A comparison of a trawl survey index with CPUE series for hake (Merluccius australis) off the west coast of South Island (HAK 7).

Filename
FAR-2018-13-Comparison-Trawl-CPUE-Indices-HAK7.pdf

Link to file
FAR-2018-13-Comparison-Trawl-CPUE-Indices-HAK7.pdf (7.9 MB)

Abstract
A series of CPUE indices were compared with the available research trawl survey indices. Even when removing midwater trawl data, or using only data from the trawl survey area, or analysing separate fleets with consistent fishing gear and practice, the resulting CPUE trajectories were similar to that produced previously for the entire fishery. None of the series matched the research trawl survey indices. It is unlikely that any current WCSI hake CPUE series is a reliable index of fish abundance.

Document date
Thursday, 14 June 2018
Document type
V 1.3
File format
Adobe PDF
File size
7.9 MB
Reference number
978-1-77665-842-8
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Uploaded from
FAR-2018-13-Comparison-Trawl-CPUE-Indices-HAK7.pdf

Uploaded date
Thursday, 14 June 2018

Search tags
Species: HAK;
Stock: HAK 7;
Author: Horn P.; Ballara S.;

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