久米島におけるウリミバエの個体数変動と抑圧防除

概要

論文の詳細を見る
Suppression of the melon fly, Dacus cucurbitae, was conducted in Kume Is., ca. 6000 ha in area, as a part of the eradication programme. Before the suppression the maximum density was approximately 1000 males per 1000-trap-days in November 1972. The aerial distribution of cane fiber board squares, 60×60×9mm, containing 24g of cue-lure (97%) and naled (3%) solution was made in the island from December 1972 to June 1973 and from January to March 1974. The squares were dropped at the rate of about two or three per 100m^2 per month, but no remarkable decline of the density was observed. After June 1974,the following methods were used : 1. From June 1974 to January 1975 protein-hydrolysate solution mixed with malathion was applied from the ground in a bush area of ca. 440 sa where the feral host plants were abundant. A total of 16 applications were made at approximately two-week intervals. 2. From October to December 1974 cotton strings, 5mm in diameter and 50-mm long, containing 2 g of cue-lure (97%) and naled (3%) solution were dropped throughout the island at a rate of 40 per 100 m^2 per month. Then, the number of flies caught in the monitor traps became less than 20 per 1000-trap-days during the application.
日本応用動物昆虫学会の論文
1975-12-25