Lack of fitness cost and inheritance of resistance to abamectin based on the establishment of a near-isogenic strain of Tetranychus urticae
文献类型: 外文期刊
作者: Yan ZHANG;Tian TIAN;Kun ZHANG;You jun ZHANG;Qing jun WU;Wen XIE;Zhao jiang GUO;Shao li WANG
作者机构:
关键词: abamectin resistance;fitness cost;inheritance pattern;near-isogenic strain;two-spotted spider mite
期刊名称: Journal of Integrative Agriculture
ISSN: 2095-3119
年卷期: 2023 年 22 卷 6 期
页码:
收录情况: SCIE(2023版) ; ; CSCD(2023-2024年度) ; ; 科技核心(2023版) ; ; 农林核心(2020版)
摘要: Many populations of the two-spotted spider mite, Tetranychus urticae Koch, have developed high levels of resistance to the pesticide abamectin in China and other countries. This study developed a near-isogenic line to understand better the inheritance, cross-resistance, and fitness costs associated with abamectin resistance in the field population of T. urticae in China. We introduced the trait that confers extremely high abamectin resistance in a field-collected population of T. urticae into a susceptible laboratory strain (IPP-SS) to generate an abamectin-resistant near-isogenic line (NIL-Aba). This process was carried out through multiple backcrossing to IPP-SS and via parthenogenesis and abamectin screening. Compared with IPP-SS, the NIL-Aba strain had a 25 147-fold resistance to abamectin and a high level of cross-resistance to bifenthrin (288.17-fold), an intermediate level to emamectin benzoate (42.57-fold), and low levels to bifenazate, chlorfenapyr, cyflumetofen, cyenopyrafen, and cyetpyrafen with resistance ranging from 3.18- to 9.31-fold. But it had no cross-resistance to profenofos. The resistance to abamectin in NIL-Aba was autosomal, incompletely dominant, and polygenic. Based on two sex life table parameters, no fitness cost was found in NIL-Aba. Establishing the NIL-Aba strain provides a reliable basis for an in-depth study of abamectin resistance in T. urticae. New information on toxicological characteristics and fitness cost should facilitate the management of abamectin resistance in field populations of T. urticae.
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