高知の施設園芸地帯で発生したdiflubenzuron抵抗性のイエバエについて : (2)室内実験による抵抗性系統の淘汰

概要

論文の詳細を見る
In the under-structure horticulture areas of Kochi, diflubenzuron, IGR insecticide had been introduced to control houseflies since about 1985. However, in 1998 the IC_<50> values of colonies collected in these areas (M.'98 colony: from Misato) showed more than 40,000ppm. The response of emergence-inhibition rate on concentration presented a plateau from 625 to 40,000ppm. And the inhibited rates of emergence on the plateau were raised from 30-40% to 80-90% by a cross with a susceptible colony (H.'98 colony: from Harigi in 1998). Then, the F_5 of the cross and the 33th generation of the M.'98 colony were selected by diflubenzuron. As a result, by the selection of 50ppm diflubenzuron to the F_5 and the progenies, the IC_<50> values of the 1st to 3rd generations showed more than 40,000ppm again, and these response of emergence-inhibition rate on concentration presented a plateau from 625 to 40,000ppm at the inhibited rates of 27.4-37.4%. On the other hand, by the selection of 10,000ppm diflubenzuron to the 33th generation of the M.'98 colony and the progenies, the 1st to 3rd generations were not susceptible at less than 40,000ppm concentrations. These results suggested that the resistant colonies collected in the under-structure horticulture areas of Kochi, were consisted of plural populations that have different susceptibility respectively.
日本ペストロジー学会の論文
2001-05-30