Life-history variation among local populations of Atlantic cod from the Norwegian Skagerrak coast

Small-scale spatial variation in life history was found among genetically distinct local populations of Atlantic cod Gadus morhua from the Norwegian Skagerrak coast. Among populations, age at 50% maturity varied from 2(.)6 to 3(.)8 years, total (L-T) length at 50% maturity from 35 to 60 cm, annual survival from 33 to 64%, mean L-T at age 4 years from 43 to 63 cm, and mean backcalculated L-T at age 1 year from 8 to 12 cm. (C) 2004 The Fisheries Society of the British Isles.