40_JDO_09

Filename
40_JDO_09.pdf

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40_JDO_09.pdf (200.6 kb)

Abstract
Estimates of absolute current and reference biomass are not available.

John dory is principally a bycatch species and, as such, estimates of MCY based on catch statistics are uncertain. Under such conditions it is difficult to determine whether changes in the reported catches indicate actual changes in the stocks or simply changes in the catches of the target species.

In 1994–95, the TACC for JDO 1 was slightly overcaught for the first time since the start of the QMS. The 1994–95 landings followed a consistent trend of increasing catches, probably due to increased targeting for John dory. However, other factors, such as increased abundance or changing fishing practices, may also have contributed to JDO 1 catch increases but trawl surveys in sub-areas of JDO 1 reveal no apparent trend in John dory biomass. Since 1994–95, the TACC for JDO 1 has been undercaught.

For JDO 1 recent catch levels and the current TACC are likely to be sustainable at least in the shortterm. It is not known if recent catch levels and the current TACC are sustainable in the long-term. For all other JDO stocks it is not known if the recent catch levels and current TACCs are sustainable. For all Fishstocks it is unknown if recent catches or the current TACCs are at levels that will allow the stocks to move towards a size that will support the MSY.

Document date
Sunday, 31 May 2009

Document type
V 1.3

File format
Adobe PDF

File size
200.6 kb

Reference number
2009

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M:\SCIPOL\Working Groups 2009\Plenary 2009\FINAL\MFish 2009 May Plenary\May 2009 - PDF\40_JDO_09.pdf

Uploaded date
Thursday, 11 June 2009

Search tags

Species: JDO;
Stock: JDO1; JDO10; JDO2; JDO3; JDO7;

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