Abstract
Modification of the fitness of diazinon resistance genotypes of the Australian sheep blowfly, Lucilia cuprina, in the absence of the insecticide from SS > RS > RR to SS = RS = RR (McKenzie et al., 1982) has been shown previously to be due to the segregation of a gene(s) on chromosome III (McKenzie and Purvis, 1984). In this study the gene (gene complex) is mapped to the w locus region of that chromosome by comparing changes in frequency of SS individuals in population cages initiated with RS genotypes segregating for field derived regions of chromosome III. Comparison of percentage egg hatch, the percentage of first instar larvae reaching adulthood and the time of development from egg to adult for combinations of modifier and resistance genotypes show that the modifier affects only the latter. Developmental time is decreased for RS and RR genotypes. The effect is dominant. The developmental time of SS genotypes is unaffected by modifier genotype.
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McKenzie, J., Game, A. Diazinon resistance in Lucilia cuprina; mapping of a fitness modifier. Heredity 59, 371–381 (1987). https://doi.org/10.1038/hdy.1987.145
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DOI: https://doi.org/10.1038/hdy.1987.145
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