Abstract
The genetic variability of Apis mellifera ligustica was screened throughout the Italian peninsula and Sardinia with eight polymorphic microsatellite loci. Samples of Apis mellifera mellifera, Apis mellifera carnica and from the Buckfast breeding line were genotyped for comparison. Low Fis and Fst values suggest the absence of genetic structure within and among A. m. ligustica populations, although the high number of alleles detected and heterozygosity. Phylogenetic and individual analyses confirmed that A. m. ligustica has come to resemble one large population, probably as a result of intensive beekeeping practices such as migratory beekeeping and large-scale commercial queen trading. Since the introgression of foreign alleles into both endemic natural and commercial A. m. ligustica populations, can be detected and monitored by microsatellite analysis, the results provide a reference data set for future local biodiversity conservation and other controlled breeding programs.
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