Insecticide Resistance of the Cotton Aphid, Aphis gossypii GLOVER. III. Host Preference and Organophosphorus Susceptibility.

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  • ワタアブラムシの薬剤抵抗性に関する研究　第３報　ナスとキュウリに寄生する個体群の寄生選好性と有機リン剤感受性
  • ワタアブラムシ ノ ヤクザイ テイコウセイ ニ カンスル ケンキュウ 3 ナス
  • III. Host Preference and Organophosphorus Susceptibility
  • 第3報 ナスとキュウリに寄生する個体群の寄主選好性と有機リン剤感受性

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Abstract

The host preference between eggplants (Solanum merongena L.) and cucumbers (Cucumis sativus L.) in spring, and the susceptibility to fenitrothion of populations of the cotton aphid, Aphis gossypii GLOVER, overwintered on shepherd's purse (Capsella bursa-pastoris M.), speedwell (Veronica persica P.) and rosemallow (Hibiscus syriacus L.) were investigated in closed plastic minihouses at Higashihiroshima in Hiroshima Prefecture from 1988 to 1990. Two biotypes with different host plant preferences for eggplant and cucumber were observed in field populations overwintered on winter host plants such as shepherd's purse, speedwell and rosemallow. Populations transferred from eggplants to overwintering host plants preferred the original host eggplant to cucumber in the early spring. Populations transferred from cucumbers to overwintering host plants preferred the original host cucumber to eggplant. Susceptibility to fenitrothion was higher in the populations on eggplants than those on cucumbers.

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