Life‐history variation among local populations of Atlantic cod from the Norwegian Skagerrak coast |
| |
| Authors: | E M Olsen†‡ H Knutsen J Gjøsæter P E Jorde§ J A Knutsen N C Stenseth § |
| |
| Institution: | Institute of Marine Research, Department of Coastal Zone, Flødevigen Marine Research Station, N‐4817 His, Norway,; Division of Marine Biology and Limnology, Department of Biology, University of Oslo, P. O. Box 1064 Blindern, N‐0316 Oslo, Norway and; Centre for Ecological and Evolutionary Synthesis, Department of Biology, University of Oslo, P. O. Box 1050, Blindern, N‐0316 Oslo |
| |
| Abstract: | 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. |
| |
| Keywords: | Gadus morhua growth life history maturation survival |
|
|
