BYX 1
The current fishery is unlikely to have had much effect on the state of the BYX 1 stock, which is likely to be lightly exploited. Current catch levels are most probably sustainable. No stock assessment has yet been conducted for BYX 1, and the state of the stock in relation to BMSY is not known.
BYX 2
For BYX 2, the current TACC (1575 t) is within the range of the F calculated in 1991. These F the CPUE for this analysis came from fishing on part of the potential BYX habitat, yields may be under-estimated. Annual landings from 1986 to 1994–95 remained generally stable, within the estimated range of F 0.1 yield estimates of 1320–1800 t0.1 estimates were based upon a CPUE index in the target trawl fishery. As 0.1 yield. Landings since 1995 result of expansion of the fishery into other areas. Therefore, recent catch levels and the current TACC appear sustainable. However, it is not known if recent catch levels and the current TACC will allow the stock to move towards a size that will support the MSY. –96 have sometimes been slightly outside the range of F0.1 estimates, as a
BYX 3
Alfonsino on the Chatham Rise (BYX 3) were lightly fished prior to 1995–96 and recent catches, although greatly increased, have been less than the TACC. BYX 3 catches have increased in recent years
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Plenary (BYX_07)
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Plenary (BYX_06)
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Title: Fisheries Assessment Plenary May 2017: Stock Assessments and Stock Status
02_BYX_2017.pdf
(645.3 kb)
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.
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Title: Fisheries Assessment Plenary May 2016: Stock Assessments and Stock Status
02_BYX_2016_FINAL.pdf
(655.7 kb)
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. BYX.
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Title: Fisheries Assessment Plenary May 2015: Stock Assessments and Stock Status
02_BYX_2015_FINAL.pdf
(645.2 kb)
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. BYX
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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 1 covers the Introductory Sections to Jack Mackerel.
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BYX 1
The current fishery is unlikely to have had much effect on the state of the BYX 1 stock, which is likely to be lightly exploited. Current catch levels are most probably sustainable. No stock assessment has yet been conducted for BYX 1, and the state of the stock in relation to BMSY is not known.
BYX 2
Annual landings from 1986 to 2007-08 have remained reasonably stable at or above the level of the TACC. Catch at this level appears to be sustainable in the short to medium term.
BYX 3
Alfonsino on the Chatham Rise (BYX 3) were lightly fished prior to 1995–96 when catches increased to near the TACC, due to the development of new fishing grounds. Catch has fluctuated around the TACC since then. It is not known if the recent catch levels or the current TACC are sustainable.
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This document summarises the most recent New Zealand fishery, biological, stock assessment and stock status information about alfonsino.
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