ショウジョウバエの変異と環境VIII. : 硫酸銅に対する抵抗性I

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Effect of pre-culture in copper-containing medium during larval stages on copper resistance of the next generation was studied, using Drosophila melanogaster Oregon wild type. Parent flies were reared in 0.5mM copper-containing Pearl's medium, which had no effect on the life span of the animals, during all or some stages of larvae. Copper resistance of the next generation was studied, using 4mM copper-containing medium, which had previously been proved as killed about 50% of normal larvae. The animals whose parents had lived in copper medium (0.5mM CuSO_4) during larval stages, developed faster in copper-containing medium (4mM CuSO_4) than the animals which had never come into contact with copper; namely, the former pupated and emerged faster than the latter. Both rates of pupation and emergence in copper-containing medium (4mM CuSO_4) were higher in the animals which had been brought into contact with copper during larval stages of their parents than the animals whose ancestors had never been treated with copper. Of course, when the normal medium was used, there no significant differences in development, emergence and pupation rates among many series investigated.
社団法人日本動物学会の論文
1959-06-15