[The effect of male mating competitiveness, developmental rate, and viability of larvae and pupae in Drosophila melanogaster heterozygous for the temperature-sensitive lethal mutation l(2)M167DTS on the dynamics of the mutation elimination from the population].

The dependence of selection on an introduced mutation 1(2)M167DTS on male mating competitiveness, viability, and developmental rate of larvae and pupae of Drosophila melanogaster, heterozygous for this mutation, was examined in population experiments with preset conditions. The limitations of fitness parameters of individuals l(2)M167DTS/+ relative to individuals +/+ were estimated according to the conditions of the experiment and phenotypic characteristics of the mutation studied. Under conditions of limited food supply and dependence on emergence time in each generation, the sequence of female mating was shown to be of less importance than the order of medium utilization by the progeny of a certain genotype related to the male success in the first mating. The limiting factors acting on the l(2)M167DTS mutation were viability and developmental rate.