Abstract The dusky cotton bug, Oxycarenus hyalinipennis (Costa) (Hemiptera: Lygaeidae) is a serious pest of cotton and damages cotton seed by reducing the oil content. In Pakistan, O. hyalinipennis is managed by using various insecticides and has developed resistance to several insecticides. In this study, O. hyalinipennis was selected with bifenthrin for 12 generations (G1 to G12) and developed a 55.64-fold resistance when compared with an unselected population (Unsel Pop). Bifenthrin resistance declined from 55.64 to 24.93-fold when selected population was removed from bifenthrin selection pressure for four generations (G13 to G16). Bifenthrin selected (Bifen-Sel) population showed a very low cross-resistance to profenofos (2.82-fold), deltamethrin (2.35-fold) and acetamiprid (2.21-fold) when compared with a field population (Field Pop). The bifenthrin resistance was incomplelety dominanat and autosomal. The relative fitness (Rf) of Bifen-Sel population was 0.58 along with significant decreases in average nymphal survival, fecundity, egg hatchability, intrinsic rate of population increase (rm), net reproductive rate (Ro) and biotic potential (Bp). The Rf of Cross1 and Cross2 was 1.07 and 1.22, respectively. The high fitness costs, instable resistance and a very low cross-resistance with other insecticides might be useful in slowing down the evolution of bifenthrin resistance by implementing an insecticide rotation plan.

中文翻译：

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Oxycarenus hyalinipennis (Costa)（半翅目：Lygaeidae）中实验室诱导的联苯菊酯抗性选择：稳定性、交叉抗性、优势和对生物适应性的影响

摘要 暗色棉虫Oxycarenus hyalinipennis (Costa) (半翅目: Lygaeidae) 是一种严重的棉花害虫，通过降低含油量危害棉籽。在巴基斯坦，O. hyalinipennis 通过使用各种杀虫剂进行管理，并已对几种杀虫剂产生抗药性。在这项研究中，O. hyalinipennis 与联苯菊酯一起选择了 12 代（G1 到 G12），与未选择的种群 (Unsel Pop) 相比，产生了 55.64 倍的抗性。Bifenthrin resistance declined from 55.64 to 24.93-fold when selected population was removed from bifenthrin selection pressure for four generations (G13 to G16). 与野外种群 (Field Pop) 相比，联苯菊酯选择 (Bifen-Sel) 种群对丙苯磷（2.82 倍）、溴氰菊酯（2.35 倍）和啶虫脒（2.21 倍）的交叉耐药性非常低。联苯菊酯抗性是不完全显性和常染色体。Bifen-Sel 种群的相对适应度 (Rf) 为 0.58，同时若虫平均存活率、繁殖力、卵孵化率、种群内在增长率 (rm)、净繁殖率 (Ro) 和生物潜力 (Bp) 显着降低。Cross1 和 Cross2 的 Rf 分别为 1.07 和 1.22。高适应性成本、不稳定的抗性以及与其他杀虫剂的极低交叉抗性可能有助于通过实施杀虫剂轮换计划来减缓联苯菊酯抗性的演变。净繁殖率 (Ro) 和生物潜力 (Bp)。Cross1 和 Cross2 的 Rf 分别为 1.07 和 1.22。高适应性成本、不稳定的抗性以及与其他杀虫剂的极低交叉抗性可能有助于通过实施杀虫剂轮换计划来减缓联苯菊酯抗性的演变。净繁殖率 (Ro) 和生物潜力 (Bp)。Cross1 和 Cross2 的 Rf 分别为 1.07 和 1.22。高适应性成本、不稳定的抗性以及与其他杀虫剂的极低交叉抗性可能有助于通过实施杀虫剂轮换计划来减缓联苯菊酯抗性的演变。