チャ葉の延命処理によるチャノホソガの室内飼育法

抄録

As the younger larva of the tea leafroller Caloptilia theivora (Walsingham) (Lepidoptera, Gracillariidae) mines only into a young tea leaf, such a tea leaf must be kept fresh for at least 10 days in order to permit rearing in 25℃ laboratory condition. We tested two alternative treatments for keeping a young tea leaf fresh by rearing larvae on treated leaves; first, removing the basal half of the leaf, and second by providing some sucrose solution for leaf absorption. A combination of the treatments kept young leaves fresh for more than 15 days, and over 80% of larvae pupated successfully. Emerging adults laid 90-132 eggs per female. In this way, the tea leafroller can be mass-reared in the laboratory by providing treated fresh young tea leaves, without the use of potted tea plants.