Of the three jack mackerel species taken in JMA 7, recent information on stock status is only
available for
T. declivis. The current TACC is approximately 50% greater than the historical MCYbasedT. declivis and T. novaezelandiae combined. These estimates of yield do notT. murphyi which comprise an important part of the catches from JMA 7 in some years.T. declivis did not indicate sustainability concerns with this0, so the stock is probably above BMSY. The historical estimate of B0 (see MCY section) isT. novaezelandiae and T. murphyi in JMA 7 is not known, nor is the sustainability ofT. declivis) are sustainable at this time.
yield estimates for
include
The 2007 preliminary assessment for
component of JMA 7 at that time though there are uncertainties in the assessment relating to the catch
histories and abundance indices. The preliminary stock assessment indicates that current biomass is
53% of B
similar to that from the 2007 assessment.
The status of
current removals of these species.
Overall it cannot be determined if the TAC or current removals are sustainable for JMA 7, but it is
likely that the removals from one component of the fishery (
Given increased catches in recent years continued monitoring of the catch composition is strongly
recommended as is further work on potential abundance indi
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Plenary (JMA_07)
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Plenary (JMA_06)
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Title: Fisheries Assessment Plenary May 2017: Stock Assessments and Stock Status
34_JMA_2017.pdf
(629.3 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. JMA
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Title: Fisheries Assessment Plenary May 2016: Stock Assessments and Stock Status
34_JMA_2016_FINAL.pdf
(543.5 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. JMA.
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Title: Fisheries Assessment Plenary May 2016: Stock Assessments and Stock Status
35_JDO_2016_FINAL.pdf
(1.7 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. JMA.
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Title: Fisheries Assessment Plenary May 2015: Stock Assessments and Stock Status
34_JMA_2015_FINAL.pdf
(1.0 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. JMA
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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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Assessment of the status of JMA is complicated by the reporting and management of three species under a single code. This is further complicated by the uncertain ‘status’ of T. murphyi. The effect of the T. murphyi invasion on stocks of the New Zealand jack mackerels is unknown.
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This document summarises the most recent New Zealand fishery, biological, stock assessment and stock status information about jack mackerels.
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