S. Mahunka szerk.: Folia Entomologica Hungarica 48. (Budapest, 1987)

Table 5. Indices of polymorphism and genetic diversities at the Mdh

g locus in D. melano gaster

, D. hydei and D. immigrans D. melanogaster D. hydei Im

~ migR. 1 R. 2 R. 3 R. 1 R . 2 R. 3 rans average number of alleles 1.4 3 1.8 2 2 2.3 2.3 average frequency of rare allele 0.01 0.01 0.02 0.127 0. 050 0.090 0.037 average frequency of heterozygotes 0.03 0.03 0.03 0.271 0. 090 0.164 0.067 genetic diversity 0.125 0.168 0.130 0.513 0. 284 0.384 0.239 Table 3. Allele frequencies at the Mdhg locus of D. immigrans abc Kisar 0 98 0.01 0 01 2 Lónya 0 96 0 04 3 Jósvafő 0 95 0 05 D. immigrant Mdh locu« Fig. 10. The observed genotype frequencies at the Mdhg loóus of D. immigrans