Fitness cost, realized heritability and stability of resistance to spiromesifen in house fly, Musca domestica L. (Diptera: Muscidae),Pesticide Biochemistry and Physiology

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Fitness cost, realized heritability and stability of resistance to spiromesifen in house fly, Musca domestica L. (Diptera: Muscidae)
Pesticide Biochemistry and Physiology ( IF 4.2 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.pestbp.2020.104648
Mehboob Alam ₁ , Rizwan Mustafa Shah ₁ , Sarfraz Ali Shad ₁ , Muhammad Binyameen ₁

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The house fly, Musca domestica L. (Diptera: Muscidae), is an insect pest of public health and veterinary importance. Spiromesifen is a new chemistry insecticide widely used for the management of sucking insect pests of vegetables and crops. In the present study, assessment of resistance risk and fitness costs associated with spiromesifen resistance in M. domestica was studied. Moreover, stability of resistance to spiromesifen and other tested insecticides (fipronil, spinosad, and bifenthrin) was evaluated in the spiromesifen-selected-strain (SPIRO-SEL-POP). After 7-generations of selection with spiromesifen, SPIRO-SEL-POP developed 108.76-fold resistance compared with the unselected strain (UNSEL-POP). The estimated value of realized heritability was 0.59 for spiromesifen resistance. Due to withdrawal of spiromesifen selection for five generations (F6-F10) on SPIRO-SEL-POP, a decline in LC50 values against spiromesifen, spinosad and bifenthrin was 0.16, 0.14 and 0.13-folds, respectively. In biological trait experiments, larval weight of Cross1 (SPIRO-SEL-POP♀ × UNSEL-POP♂) and SPIRO-SEL-POP was significantly lower than that of Cross2 (SPIRO-SEL-POP♂ × UNSEL-POP♀) and UNSEL-POP. Pupal weight of SPIRO-SEL-POP was higher when compared with Cross1 while it was similar to that of Cross2 and UNSEL-POP. Adult emergence rate of UNSEL-POP was higher than Cross1, but similar to the Cross2 and SPIRO-SEL-POP. The SPIRO-SEL-POP and Cross1 showed the lowest relative fitness when compared with USEL-POP and Cross2. Intrinsic rate of natural increase of SPIRO-SEL-POP was much lower than that of UNSEL-POP and Cross2 followed by Cross1. The SPIRO-SEL-POP exhibited lower biotic potential when compared with UNSEL-POP and Cross2 but similar to Cross1. Fecundity and hatching rates were lower in SPIRO-SEL-POP compared to UNSEL-POP. It could be concluded that spiromesifen resistance in M. domestica comes with a cost and is instable. Therefore, spiromesifen rotation with other insecticides and withdraw of its usage for some period could help to sustain its efficacy by delaying the development of resistance.

中文翻译：

家蝇，家蝇，家蝇（双翅目：蝇科）的适应成本，已实现的对螺蛉的抗性的遗传性和稳定性

家蝇，家蝇，家蝇（双翅目：Muscidae），是一种对公共卫生和兽医具有重要意义的害虫。螺螨酯是一种新型化学杀虫剂，广泛用于蔬菜和农作物吸食性害虫的防治。在本研究中，研究了与家蝇中螺麦昔芬抗性相关的抗性风险和健康成本的评估。此外，在螺菌素选择菌株 (SPIRO-SEL-POP) 中评估了对螺菌素和其他测试杀虫剂（氟虫腈、多杀菌素和联苯菊酯）的抗性稳定性。经过 7 代螺环素筛选后，SPIRO-SEL-POP 与未筛选菌株 (UNSEL-POP) 相比产生了 108.76 倍的抗性。对于螺环素抗性，已实现遗传力的估计值为 0.59。由于在 SPIRO-SEL-POP 上取消了五代 (F6-F10) 的螺菌素选择，针对螺菌素、多杀菌素和联苯菊酯的 LC50 值分别下降了 0.16、0.14 和 0.13 倍。在生物学性状实验中，Cross1（SPIRO-SEL-POP♀×UNSEL-POP♂）和SPIRO-SEL-POP的幼虫重量显着低于Cross2（SPIRO-SEL-POP♂×UNSEL-POP♂）和UNSEL -流行音乐。与Cross1相比，SPIRO-SEL-POP的蛹重更高，而与Cross2和UNSEL-POP的蛹重量相似。UNSEL-POP的成虫出现率高于Cross1，但与Cross2和SPIRO-SEL-POP相似。与 USEL-POP 和 Cross2 相比，SPIRO-SEL-POP 和 Cross1 的相对适应度最低。SPIRO-SEL-POP的内在自然增长率远低于UNSEL-POP和Cross2，其次是Cross1。与 UNSEL-POP 和 Cross2 相比，SPIRO-SEL-POP 表现出较低的生物潜力，但与 Cross1 相似。与 UNSEL-POP 相比，SPIRO-SEL-POP 的繁殖力和孵化率较低。可以得出结论，家蝇中螺蛉的抗性是有代价的，而且是不稳定的。因此，螺麦酯与其他杀虫剂轮换使用并在一段时间内停止使用可以通过延迟抗药性的发展来帮助维持其效力。

更新日期：2020-09-01

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