Fisheries Infosite

FAR 2018/07 Relative abundance, population structure, and stock status of blue cod off north Otago in 2013. Concurrent fixed and random site potting surveys.


Link to file
FAR-2018-07-BCO3-North-Otago.pdf (2.7 MB)

Third fixed and first random site potting surveys in north Otago time series. Twenty-seven fixed and 40 random sites surveyed (6 pots per site, 402 pot lifts) from 4 coastal and 2 offshore strata. Pot catch weighed, length and sex of blue cod recorded. Otoliths from random and fixed sites produced age-length keys applied to the scaled length frequency distributions to estimate the population age structures. Estimates of  Z and F%SPR indicate that spawning biomass has been reduced to 34-36%.

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

Uploaded date
Thursday, 14 June 2018

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

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