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

概要

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In the under-structure horticulture areas of Kochi, diflubenzuron, IGR incecticide had been introduced to control the house-fly since 1985. However, in 1998 the IC-50 values of a colony of the house-flies collected in these areas (M.'98 colony: from Misato) showed more than 40,000ppm at 10th and 20th generations colonized in our laboratory. And those of F_1 F_2 progenies from the straight cross between this colony (M.'98 col.) and a susceptive colony (H.'98 colony: from Harigi in 1998, the IC-50 values: 1.9-2.9ppm at 10th and 18th generations) were reduced to 50.3-89.8ppm. In these experiments, the inhibited rate-concentration regression line of the resistant colony (M.'98 col.), the F_1 and the F_2 had a distinct plateau from 156 to 40,000ppm. And the inhibited rate of emergence at that the plateau was shown had been raised from 30-40% to 80-90% by the cross with the susceptive colony (H.'98 col.). On the other hand, the resistant colny (M.'98 col.) showed no obvious cross-resistance to cyromazine grouped in the similar insecticides to inhibit forming of epidermis with diflubenzuron.
日本ペストロジー学会の論文
2000-05-31