A. Georges Bank cod
This stock was last assessed and peer reviewed in August 2005 (O’Brien et al. 2006). The assessment was conducted using VPA with landings only, i.e. discards and recreational landings were not included in the catch at age. For terminal year 2004, total commercial landings were 4,583 mt and fully rec...
| Main Authors: | , , , , |
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.173.1409 http://www.nefsc.noaa.gov/nefsc/publications/crd/crd0815/pdfs/garm3a.pdf |
| Summary: | This stock was last assessed and peer reviewed in August 2005 (O’Brien et al. 2006). The assessment was conducted using VPA with landings only, i.e. discards and recreational landings were not included in the catch at age. For terminal year 2004, total commercial landings were 4,583 mt and fully recruited F (ages 4-8, unweighted average) was estimated to be 0.24, the lowest F in the time series (1978-2004). Spawning stock biomass was 22,564 mt in 2004, 30 % higher than the time series low in 1994. Since 1991, recruiting year classes had all been below the long term average (14 million age 1 fish) with the 2000 and 2001 year classes being the lowest in the time series. The 2003 year class, however, was estimated to be above average (21 million age 1 fish). The NEFSC spring and autumn bottom trawl survey indices continued to remain near record low values. The most recent above average autumn recruitment index of age 1 fish had occurred in 1988. In 2002, biological reference points (BRPs) were developed for Georges Bank cod (NEFSC 2002) based on landings only, using a Beverton-Holt stock-recruit relationship with an assumed prior for the unfished recruitment. The BRPs were: FMSY = 0.18, MSY = 35,200 mt and SSBMSY = 217,000 mt. This assessment, with terminal year 2007, includes USA and Canadian commercial landings and discards, and USA recreational landings in the catch at age as recommended by the GARM II panel (Mayo and Terceiro 2005). 2.0 Fishery Georges Bank Atlantic cod is a transboundary stock that is harvested by both USA and Canadian fishing fleets. USA cod landings are generally highest in the second calendar quarter (April-June) and are taken predominantly from the western part of Georges Bank (statistical |
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