Estimates of current and reference absolute biomass are not available for any gurnard stock. .
Estimates of current and reference biomass were available for GUR 1W and GUR 1E after the 1997–
98 stock assessment, but can no longer be considered current and in 2008 the Northern Inshore
Finfish Working Group (NINSWG) recommended that this assessment be revisited.
Red gurnard is a major bycatch species subject to wide variations in recorded catch. This is partly
due to changes in target fisheries and stocks, and to natural variations in the red gurnard stocks. The
MCY estimates derived from catch statistics are subject to a great deal of uncertainty and are
probably conservative.
The current TACCs were based on a period of highest ever catches, and these levels have not been
reached in recent years. In GUR 1, current catch levels are probably constrained by changes in the
target fisheries.
GUR 1W
The available stock assessment was based on data up to the end of the 1997–98 fishing year. The
model indicated that B
MID99 was about 80% of B0 (range 40–147%, performance index 3%),MSY. Catch levels at that time appeared to be sustainable, and continued catches at thatMSY.
GUR 1E
The available stock assessment was based on data up to the end of the 1997–98 fishing year.
|
|
Plenary (GUR_07)
|
|
Plenary (GUR_06)
|
Title: Fisheries Assessment Plenary May 2017: Stock Assessments and Stock Status
73_GUR_2017.pdf
(1.9 MB)
The May 2017 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 83 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. GUR
|
Title: Fisheries Assessment Plenary May 2016: Stock Assessments and Stock Status
73_GUR_2016_FINAL.pdf
(1.8 MB)
The May 2016 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 83 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. GUR.
|
Title: Fisheries Assessment Plenary May 2015: Stock Assessments and Stock Status
73_GUR_2015 FINAL.pdf
(1.7 MB)
The May 2015 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 82 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. GUR.
|
|
The May 2014 Fisheries Plenary Report summarises fishery, biological, stock assessment and stock status information for 82 of New Zealand’s commercial fish species or species groups in a series of Working Group or Plenary reports. Each species or species group is split into 1-10 stocks for management purposes. Volume 2 covers the John Dory to Red Gurnard.
|
|
Estimates of current and reference absolute biomass are not available for any gurnard stock. Estimates of current and reference biomass were available for GUR 1W and GUR 1E after the 1997–98 stock assessment, but can no longer be considered current and in 2008 the Northern Inshore Finfish Working Group (NINSWG) recommended that this assessment be revisited.
Red gurnard is a major bycatch species subject to wide variations in recorded catch. This is partly due to changes in target fisheries and stocks, and to natural variations in the red gurnard stocks. The MCY estimates derived from catch statistics are subject to a great deal of uncertainty and are probablyconservative.
The current TACCs were based on a period of highest ever catches, and these levels have not been reached in recent years. In GUR 1, current catch levels are probably constrained by changes in the target fisheries.
GUR 1W
Standardised CPUE indices of abundance suggest that stock size has fluctuated around the long-term average since 1989-90.
GUR 1E Recent CPUE analyses for East Northland (up to 2004–05) indicate that abundance declined from 1991-92 to 1995-96 and then increased back to the former high by 2004-05.The CPUE analysis for the Bay of Plenty show a declining trend from 1991-92 to 1994-95 and has remained constant sincethat time.
Stable or increasing CPUE trends in con
|
|
This document summarises the most recent New Zealand fishery, biological, stock assessment and stock status information about red gurnard.
|
