Fisheries Infosite

FAR 2018/08 - Relative abundance, population structure, and stock status of blue cod off south Otago in 2013. Estimates of pot catchability and size selectivity.


Link to file
FAR-2018-08-BCO3-South-Otago.pdf (3.8 MB)

Second random site potting surveys in the time series. Forty potting sites surveyed (6 pots per site = 240 pot lifts) from six strata. Pot catch weighed, length and sex of blue cod recorded. Otoliths age-length keys applied to the scaled length frequency distributions estimate population age structures. Estimates of  Z and F%SPR indicate spawning biomass reduced to 57% (inshore) and 74% (offshore). Density/pot catch relationships differ among areas imply pot catchability is spatially variable.

Document date
Thursday, 14 June 2018
Document type
V 1.3
File format
Adobe PDF
File size
3.8 MB
Reference number
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Uploaded date
Thursday, 14 June 2018

Search tags
Species: BCO;
Author: Carbines G.; Haist V.;

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