L. Laikre et al., TEMPORAL CHANGE OF MITOCHONDRIAL-DNA HAPLOTYPE FREQUENCIES AND FEMALEEFFECTIVE SIZE IN A BROWN TROUT (SALMO-TRUTTA) POPULATION, Evolution, 52(3), 1998, pp. 910-915
We report data on genetic drift of mitochondrial DNA (mtDNA) haplotype
s in a natural brown trout (Salmo trutta) population in Sweden. Large
temporal frequency shifts were observed over the 14 consecutive year c
lasses studied. The observed rate of drift was used to estimate the ef
fective size of the population. This effective size applies to the fem
ale segment of the population as mtDNA is maternally inherited. The ma
gnitude of mtDNA haplotype frequency change is compared with the corre
sponding allele frequency changes at 14 allozyme loci in the same popu
lation. The female effective size is estimated as 58, which is approxi
mately half the effective size of 97 for the total population (both se
xes) previously obtained from the shifts of allozyme allele frequencie
s.