GENETIC-STRUCTURE AND DIFFERENTIATION AMONG GREEK BROWN TROUT (SALMO-TRUTTA L) POPULATIONS

Twenty five loci have been screened in four Greek brown trout (Salmo trutta L.) populations using starch gel electrophoresis. A number of alleles which were unique for the Greek populations were found. The degree of genetic differentiation within and among seven Greek brown trout populations was calculated. The values of genetic distance between these seven populations are similar to those reported for other populations of the same species. These results contradict the classification of Greek brown trout populations into five subspecies. Furthermore, the phylogenetic relationships between 19 European populations were investigated. The high values of genetic identity between the Mediterranean and the Black Sea populations indicate that they might be of common origin. © 1990 The Genetical Society of Great Britain.