The relative net fitness of a compound chromosome strain of Drosophila melanogaster was about 0.05, compared with the chromosomally normal strain from which it was derived. Based on meiotic considerations alone, the expected relative fitness was about 0.25. There were no significant differences in fertility between the compound and normal strains; the compound strain produced about 28% as many offspring as the normal strain and developed faster than the normal strain in two replicates, and slower in one replicate. The low relative fitness of the compound strain was apparently due to assortative mating, in which normal females discriminated strongly against compound males. Implications for pest control projects are dicussed.
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Communicated by J. S. F. Barker
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Halliburton, R., Tata, J. Components of fitness in a compound chromosome strain of Drosophila melanogaster . Theoret. Appl. Genetics 75, 468–473 (1988). https://doi.org/10.1007/BF00276751
- Compound chromosomes
- Assortative mating
- Pest control