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<Author> Takahisa MIYATAKE ; Masaaki YAMAGISHI ; Hiroyuki KAKINOHANA |
We discuss quality control in mass-reared melon flies, Bactrocera cucurbitae, after the eradication, based on the results of artificial selection experiments. First, a history of quality control in mass-rearing insects is described briefly. In practical mass- rearing of the melon fly, many traits have already been differentiated between mass-reared and wild flies. Thus, the differing traits of wild and mass-reared melon flies are reviewed and the factors which have caused these differences are considered. It was considered that these differences between wild and mass-reared melon flies depended on the selection pressures from the mass-rearing method. Next, the results of several artificial selection experiments using the melon fly are reviewed. Finally, consideration is given to some correlated responses to artificial selection in mass-rearing. The longevity that is correlated to early fecundity was successfully controlled by artificial selection for reproduction in the mass-rearing system. On the basis of these results, an improved method for quality control in the mass-reared melon fly with quantitative genetics considerations is discussed. |
