Fisheries Infosite

New Zealand Fisheries Assessment Report 2017/63. 61 p. Relative abundance, population structure, and stock status of blue cod in the Foveaux Strait in 2014. Experimental evaluation of pot catchability and size selectivity.

Filename
FAR-2017-63-Relative-abundance-population-structure-and-stock-status-of-blue-cod-in-the-Foveaux-Strait-in-2014.pdf

Link to file
FAR-2017-63-Relative-abundance-population-structure-and-stock-status-of-blue-cod-in-the-Foveaux-Strait-in-2014.pdf (2.2 MB)

Abstract
The 2014 Foveaux Strait blue cod random site potting survey mean catch rate of all blue cod was 7.6 kg.pot-1, c.v.=11.6%. Size ranged from 9 to 46 cm, though few were >40 cm. The mean age was 5.3 years for males and 5.4 years for females and Z ranged from 0.59 to 0.87. SPR was F20%, which is beyond the target reference point and should be of concern. Concurrent video counts had more small blue cod and a variable relationship with subsequent catch from both type 1 and type 2 blue cod survey pots.

Document date
Friday, 1 December 2017
Document type
V 1.3
File format
Adobe PDF
File size
2.2 MB
Reference number
978-1-77665-739-1
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Uploaded from
FAR-2017-63-Relative-abundance-population-structure-and-stock-status-of-blue-cod-in-the-Foveaux-Strait-in-2014.pdf

Uploaded date
Friday, 1 December 2017

Search tags
Author: Carbines, G.D.; Haist, V.;
Species: Blue Cod;

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