PROBLEM TO BE SOLVED: To provide the mass-collection of egg parasitoids as a biological control agent and the evasion of the medicine resistivity of a chemical control agent as an object.SOLUTION: When the common concentration of a chemical control agent as an object reaches a sublethal concentration, by biological control with egg parasitoids and the chemical control agent (at common concentration) as an object, medicine resistivity individual reserve troops in the region is decreased, and individuals having sensitivity to the objective chemical are increased.COPYRIGHT: (C)2015,JPO&INPIT【課題】生物的防除剤としての卵寄生蜂の大量採集と対象とする化学的防除剤の薬剤抵抗性の回避を提供する。【解決手段】対象とする化学的防除剤の常用濃度が亜致死濃度となった時点で、卵寄生蜂による生物的防除と対象となる化学的防除剤(常用濃度)により、地域内の薬剤抵抗性個体予備軍の減少と対象薬剤に対する感受性をもった個体の増加を図る。【選択図】図1