Abstract
We characterised the first twelve microsatellites for the freshwater amphipod Gammarus roeselii. Overall 47 individuals from two populations were analyzed from the River Rhine system located in Southern and Middle Germany. Allele numbers range from 2 to 8 and observed heterozygosities vary between the values 0.08 and 0.86. From the two investigated populations, two loci were found to be significant departure from Hardy–Weinberg equilibrium, respectively. The reported microsatellite markers will facilitate investigations on the population genetic structure of G. roeselii, which is recently repressed by invasive amphipod species in the River Rhine system.
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