Implications of the 1981 Georges Bank and Gulf of Maine Cod and Haddock Assessments for Future Management Strategies
نویسنده
چکیده
منابع مشابه
Pre-1900 – late 1930s
Recent observations of cod movement across stock boundaries are generally consistent with historical tagging data as well as information from other stock identification approaches. This working paper provides a historical context in which to consider recent tagging data for spatial delineation of cod stock assessments (TOR C). Introduction The objective of this report is to review the literatur...
متن کاملGenetic differentiation among Atlantic cod (Gadus morhua) from Browns Bank, Georges Bank, and Nantucket Shoals
The Atlantic cod (Gadus morhua) is a migratory gadid found on both sides of the North Atlantic. In the Northwest Atlantic, cod are distributed nearly continuously along the continental shelf from Greenland to North Carolina, spawning in relatively discrete, temporally stable areas, and different regions are regarded as different management units defined primarily by latitude and bathymetry (Ruz...
متن کاملReaction Norms for Age and Size at Maturation: Study of the Long-term Trend (1970-1998) for Georges Bank and Gulf of Maine Cod Stocks. Ices Cm 2002/y:03
Average age and size at maturation have decreased in many commercially exploited fish stocks during the last few decades. This phenomenon could be either a direct phenotypic response to some environmental variation, or the evolutionary consequence of some selective pressure. Traditionally used maturation indices, i.e. the age and size at which 50% of individuals are mature, are not appropriate ...
متن کاملProject Title : Genetic Identification of Atlantic Cod Spawning Stocks in U . S . Waters using Microsatellite and SNP DNA
In this collaborative research project, we formed a partnership of commercial fisherman and scientists from UNH and NYU to investigate stock definitions for Atlantic cod using DNA markers. Cod in U.S. waters are currently managed as two stocks: 1) a Gulf of Maine stock and 2) a Georges Bank and south stock. This designation is decades old and warrants reevaluation in light of concerns that fish...
متن کاملProject Title : Genetic Identification of Atlantic Cod Spawning Stocks in U . S . Waters
In this collaborative research project, we formed a partnership of commercial fisherman and scientists from UNH and NYU to investigate stock definitions for Atlantic cod using DNA markers. Cod in U.S. waters are currently managed as two stocks: 1) a Gulf of Maine stock and 2) a Georges Bank and south stock. This designation is decades old and warrants reevaluation in light of concerns that fish...
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