Abstract
The level of enzyme polymorphism was compared in tenDrosophila melanogaster populations collected in farmyards and distilleries in two regions of Hungary. The total genetic diversity was partitioned into between-and within-population components at each investigated locus using Wright's F-statistics. Population differentiation was studied in two different ways. Genetic distances between pairs of populations were calculated and a hierarchical analysis of gene diversity was performed. Based on the F values gene flow was estimated among the populations at different levels of the hierarchy. The results indicated that our ‘farmyard populations’ collected within a region could be considered as parallel samples from a panmictic population rather than samples of distinct populations. In distilleries, the flies might be influenced by two different evolutionary forces: (i) selection due to the extremely high concentration of ethanol in the fermenting mash and (ii) genetic drift due to the combination of repeated founder effects and fluctuating population size. Our results suggested that ‘distillery populations’ could not be regarded as real populations either. They could be considered as peculiar cases: founder individuals taken from the total population (region) established special populations which survived in the distilleries for many generations. Thus the dominating force acting on the ‘distillery populations’ was genetic drift.
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Pecsenye, K., Meglécz, E. Enzyme polymorphism inDrosophila melanogaster populations collected in two different habitats in Hungary. Genetica 96, 257–268 (1995). https://doi.org/10.1007/BF01439580
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DOI: https://doi.org/10.1007/BF01439580