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Farming of Atlantic cod Gadus morhua in the vicinity of major spawning sites for Norwegian coastal cod populations - is it hazardous?

Fevolden, Svein-Erik; Westgaard, Jon-Ivar; Christiansen, Jørgen Schou
Working paper
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URI
http://hdl.handle.net/11250/102994
Date
2009
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  • ICES CM documents authored by IMR scientists (1949-2011) [3138]
Original version
This report is not to be quoted without prior consultation with the General Secretary.  
Abstract
Waters along and adjacent to the coast of northern Norway are unique

in housing two major populations of Atlantic cod with very di erent life

histories. The Northeast Arctic cod (NEAC) has its nursery and feeding

grounds in the Barents Sea but migrates to the coast of northern Norway

to spawn. Norwegian coastal cod (NCC) is more stationary, spawns

mainly at local sites in individual ords but to some degree also overlap

with the spawning sites of NEAC (Fig.1). These distinctive patterns in life

history are re ected in a clear-cut genetic divergence between the two

populations. Various molecular genetic markers (scnDNA, microsatellites

and SNPs) have displayed genetic di erences between NEAC and NCC

which are remarkable for marine sh with a comparable gene ow

potential (cf. Sarvas and Fevolden 2005, Wennevik et al. 2008, and

Westgaard and Fevolden 2008 for recent updates).
Publisher
ICES
Series
ICES CM documents;2009/Q:18

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