Research Document - 2003/104

Assessment of the Status of Division 4X/5Y Haddock in 2003

By Hurley, P.C.F., Black, G.A.P., Simon, J.E.,
Mohn, R.K. and Comeau, P.A.

Abstract

The quota for NAFO Division 4X/5Y haddock has remained at 8,100t for the last 5 years. Reported landings have been close to the quota each year. The quota in 2003 is 10,000t. Abundance has been increasing since the early 1990s and is presently near the high levels observed in the late 1970s.
Size-at-age and growth have decreased since 1970, particularly at older ages. Exploitation rate for ages 5-7 decreased from approximately 50% in the early 1980s to below 20% (corresponds to currently used F0.1=0.25) since 1994. Partial recruitment has changed in recent years and fully recruited ages have changed from 5-7 to 8-10. Exploitation on fully recruited ages (8-10) has remained high at about 20%. The 1998 yearclass is estimated to be the largest observed in the time series, and the 1999 yearclass is estimated to be very large; however due to the retrospective pattern these yearclasses may be substantially over-estimated. Spawning stock biomass (ages 4+) is estimated to increase to a high in 2004 and then decrease subsequently unless further strong recruitment occurs. Projected yield at F0.1 in the 2004 fishing year is estimated to be 11,000t; however due to the retrospective pattern, this may also be over-estimated. Emphasis should be on how the potential yield from the current good recruitment is to be utilised over time. The catch of cod in the mixed groundfish fishery is a concern and conservation of cod should be considered in the management plan for this fishery.

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