Pre-recruit (0+) snapper (Chrysophrys auratus) beam trawl and beach seine surveys of East Northland and the Hauraki Gulf (SNA 1)

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FAR-2019-72-Pre-recruit-SNA-1-surveys.pdf

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FAR-2019-72-Pre-recruit-SNA-1-surveys.pdf (5.1 MB)

Abstract
Stock assessment and management of the SNA 1 stock would benefit from estimates of snapper year-class strength, before these fish recruit into the adult fished populations. A single-phase stratified-random beam trawl survey of the Hauraki Gulf (102 stations) returned an estimate of 10.69 million 2019-year-class recruits (CV 15.9%). A two-phase stratified random survey in East Northland (102 stations), returned an estimate of 634 000 recruits (CV 18.7%). These results demonstrate that beam trawl surveys have the potential to generate year class strength estimates for 0+ snapper.

Document date
Thursday, 5 December 2019

Document type
V 1.3

File format
Adobe PDF

File size
5.1 MB

Reference number
2019/72

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FAR-2019-72-Pre-recruit-SNA-1-surveys.pdf

Uploaded date
Thursday, 5 December 2019

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ISBN: 978-1-99-001716-2;
ISSN: 1179-5352;
AUTHOR: Morrison, M.A.; McKenzie, J.; Bian, R.;
FAR: 2019/72;

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