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 (LT) length at 50% maturity from 35 to 60 cm, annual surviv...

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Veröffentlicht in:	Journal of fish biology 2004-06, Vol.64 (6), p.1725-1730
Hauptverfasser:	Olsen, E. M., Knutsen, H., Gjøsæter, J., Jorde, P. E., Knutsen, J. A., Stenseth, N. C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Agnatha. Pisces Biological and medical sciences Fundamental and applied biological sciences. Psychology Gadus morhua growth life history Marine maturation survival Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
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Beschreibung
Zusammenfassung:	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 (LT) length at 50% maturity from 35 to 60 cm, annual survival from 33 to 64%, mean LT at age 4 years from 43 to 63 cm, and mean backcalculated LT at age 1 year from 8 to 12 cm.
ISSN:	0022-1112 1095-8649
DOI:	10.1111/j.0022-1112.2004.00402.x