Electrophoretic studies of cod (Gadus morhua) from Faroe Bank and Faroe Plateau compared with results found in other distribution areas.

The Faroe Bank covers a relatively small area with water masses fairly well isolated from the water masses on the Faroe Plateau. Individual growth of cod on the Faroe Bank is higher than observed in almost all other areas in the world. It has been shown that there are morpho- and physiological differences between cod from the Faroe Bank and cod on the Faroe Plateau. In this paper results from electrophoretic studies are presented. In the genetic analyses there were no differences between cod living on the Faroe Plateau and on the Faroe Bank. This genetic similarity is caused by migration between the areas. No differences were detected in allele frequencies neither between the two sexes nor among different year classes neither within nor between the two populations. The results also show that there were no differences in mean size of cod within genotypes or among loci. Indication of the genetic similarity between cod living on the Faroe Plateau and the Faroe Bank is in agreement with results found in similar investigations of Atlantic cod elsewhere . Results from electrophoretic investigations of cod stocks in the North Atlantic show great genetic uniformity where local variations within populations often exceed variations between populations.

[1]  E. Parker,et al.  Multiple forms of lactate dehydrogenase in the cod, Gadus morhua L. , 1969, Biochemical Genetics.

[2]  D. Rand,et al.  Heteroplasmy of short tandem repeats in mitochondrial DNA of Atlantic cod, Gadus morhua. , 1992, Genetics.

[3]  E. Árnason,et al.  Gene flow and lack of population differentiation in Atlantic cod, Gadus morhua L., from Iceland, and comparison of cod from Norway and Newfoundland , 1992 .

[4]  K. Jørstad,et al.  Genotype distributions of cod from the Norwegian Skagerrak coast , 1992 .

[5]  G. Nævdal,et al.  Genetic studies of redfish (Sebastes spp.) along the continental slopes from Norway to East Greenland , 1991 .

[6]  W. Grant,et al.  Description of electrophoretic loci in Atlantic cod, Gadus morhua, and comparison with Pacific cod, Gadus macrocephalus. , 2008, Hereditas.

[7]  T. Haug,et al.  Genetic Population Structure of Atlantic Halibut, Hippoglossus hippoglossus , 1988 .

[8]  N. Ryman,et al.  Genetic Variation in Atlantic Cod (Gadus morhua) Throughout Its Range , 1985 .

[9]  J. Mork,et al.  The haemoglobin polymorphism in Atlantic cod (Gadus morhua L.); genotypic differences in somatic growth and in maturing age in natural populations. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983 , 1984 .

[10]  J. Mork,et al.  LDH gene frequencies in cod samples from two locations on the Norwegian coast , 1980 .

[11]  M. Nei,et al.  Estimation of average heterozygosity and genetic distance from a small number of individuals. , 1978, Genetics.

[12]  T. Cross,et al.  Geographic Variation in Atlantic Cod, Gadus morhua, off Eastern North America: A Biochemical Systematics Approach , 1978 .

[13]  F. B. Christiansen,et al.  Geographical patterns of four polymorphisms in Zoarces viviparus as evidence of selection. , 1974, Genetics.

[14]  Dando Pr.  Distribution of multiple glucosephosphate isomerases in teleostean fishes. , 1974, Comparative biochemistry and physiology. B, Comparative biochemistry.

[15]  J. Lavety,et al.  Some biochemical characteristics of cod (Gadus morhua L.) from the Faroe bank compared with those from other fishing grounds. , 1974, Comparative biochemistry and physiology. B, Comparative biochemistry.

[16]  I. Lush.  Lactate dehydrogenase isoenzymes and their genetic variation in coalfish (Gadus virens) and cod (Gadus morrhua) , 1970 .

[17]  D. Møller,et al.  Genetic diversity in spawning cod along the Norwegian coast. , 2009, Hereditas.

[18]  A. Jamieson,et al.  Two races of cod at Faroe , 1967, Heredity.

[19]  O. Frydenberg,et al.  Haemoglobin polymorphism in Norwegian cod populations. , 2009, Hereditas.

[20]  K. Sick.  Haemoglobin polymorphism of cod in the Baltic and the Danish Belt Sea. , 2009, Hereditas.

[21]  S. Siegel,et al.  Nonparametric Statistics for the Behavioral Sciences , 2022, The SAGE Encyclopedia of Research Design.