Mitochondrial DNA analysis of Scottish populations of Arctic charr, Salvelinus alpinus (L.)

Mitochondrial DNA analysis of a total of 82 individuals from seven Scottish populations of Arctic charr (Salvelinus alpinus L.) using restriction fragment length polymorphism and direct nucleotide sequencing of the cytochrome b gene revealed little variation within or between populations. One of 19 restriction enzymes showed a polymorphism that was present in three of the seven populations. Only one nucleotide substitution was detected in a 288 base pair segment of the cytochrome b gene examined in 26 fish. Approximately 4% of the mitochondrial genome was surveyed with these complementary procedures.