|| 要旨トップ | 目次 |||日本生態学会第64回全国大会 (2017年3月、東京) 講演要旨
一般講演（ポスター発表） P1-A-012 （Poster presentation）
Wing acquisition enabled insects to find a novel habitat, foods and mates in a wide range, however apterous individuals exist in some species. Winged species sometimes produce apterous mutants that often bear physical weakness. The mutant cannot spread through its population because of the female sterility or the recessive inheritance of the mutation. In Callosobruchus maculatus, known as a bean weevil, an apterous trait was reported to be sex linked; the trait is invisible in males. Apterous females in C. maculatus are highly sterile. The invisible mutant trait in males might be an antagonistic phenotype against sterility. The mutant in C. maculatus was lost a century ago, but recently I found apterous mutants in C. analis. I examined the inheritance system of the mutant in C. analis. The mutation followed essentially the simple Mendelian inheritance that is presumed to be through a single autosomal locus with two alleles. Contrary to the case of C. maculatus, the apterous trait of C. analis was visible in both females and males. I found that sterility was observed only in female mutants, but was cured by a paternal zygote of a wild type. This rescue effect may be an antagonistic trait against female mutant’s sterility.