Genetic variations of Iranian and French stocks of Rainbow trout (Oncorhynchus mykiss)

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Abstract

Rainbow trout, Oncorhynchus mykiss is the most important cold water farmed fish as a nonindigenous
species in Iran. Eyed eggs have been imported from different countries to Iran. In this
study, genetic diversity of 50 fish (male and female) from Iranian generation and 24 fish from
French generation were evaluated. Six microsatellite markers including OMM1019 ،OMM1036
،OMM1307 ، OmyFGT5TU ،Omy77DU and Omy207UoG were applied. Average number of
observed alleles in the Iranian and the French stocks were 6.68 and 6.83, respectively. Average
number of effective alleles in the Iranian and French stocks were 3.13 and 3.45, respectively. Mean
expected and observed heterozygosis was 0.68, 0.53 and 0.71, 0.61 in Iranian and French stocks,
respectively. The results showed significant deviation from Hardy-Weinberg equilibrium at the
most of loci × stock. Fixation index Fst calculated based on allelic frequency between two stocks
was 0.058 with significant difference between 2 stocks. The results of this study showed
insignificant genetic differentiation based on six microsatellite loci.

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Iranian Scientific Fisheries Journal
Volume 23, Issue 1 - Serial Number 86
January and February 2015
Pages 75-84

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