08_EMA_09

Filename
08_EMA_09.pdf

Link to file

08_EMA_09.pdf (154.8 kb)

Abstract
Little is known about the status of blue mackerel stocks and no estimates of current and reference biomass, or yield, are available for any blue mackerel area. It is not known if recent catch levels are sustainable or at levels that will allow the stocks to move towards a size that will support the MSY.

EMA 1
For EMA 1, the stability of the age composition data and the large number of age classes that comprise the catches suggests that blue mackerel may be capable of sustaining current commercial fishing mortality, at least in the short-term.

EMA 7
The broad spread of age classes seen in the catch from the trawl fishery is not consistent with the large decline in CPUE from 1999 to 2005. The Working Group agreed that it was is premature to make conclusions about trends in abundance based on the CPUE indices, due to the significant area/year interactions in the analysis.

Document date
Sunday, 31 May 2009

Document type
V 1.3

File format
Adobe PDF

File size
154.8 kb

Reference number
2009

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Uploaded from
M:\SCIPOL\Working Groups 2009\Plenary 2009\FINAL\MFish 2009 May Plenary\May 2009 - PDF\08_EMA_09.pdf

Uploaded date
Wednesday, 10 June 2009

Search tags

Species: EMA;
Stock: EMA1; EMA10; EMA2; EMA3; EMA7;

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