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首页> 外文期刊>Nematropica >Effect of dinotefuran, indoxacarb, and imidacloprid on survival and fitness of two Arizona-native entomopathogenic nematodes against Helicoverpa zea(Lepidoptera: Noctuidae).
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Effect of dinotefuran, indoxacarb, and imidacloprid on survival and fitness of two Arizona-native entomopathogenic nematodes against Helicoverpa zea(Lepidoptera: Noctuidae).

机译：地呋喃，茚虫威和吡虫啉对两个亚利桑那州原产线虫病线虫对鳞翅目Helicoverpa zea（鳞翅目：夜蛾科）的存活和适应性的影响。

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摘要

The effect of three insecticides commonly used in Arizona, dinotefuran, indoxacarb, and imidacloprid, was?evaluated on two Arizona-native entmopathogenic nematodes (EPN), Heterorhabditis sonorensis (Caborca strain)?and Steinernema riobrave (SR-5 strain), using Helicoverpa zea (Lepidoptera: Noctuidae) as the insect host.?Specifically, we assessed their effect on EPN survival and fitness (virulence and reproduction). Three application?timings were considered: i) EPN applied first, insecticide applied 24 h later, ii) insecticide applied first, EPN?applied 24 h later, and iii) simultaneous application of EPN and insecticide. Our results showed that infective?juvenile (IJ) survival of S. riobrave and H. sonorensis was not significantly affected by the application of the?selected insecticides. Indoxacarb had an ambiguous effect on the S. riobrave life cycle showing a synergistic?effect in the virulence of this nematode but reducing its progeny production by two-fold. Similar results were?observed for nematode progeny production when H. sonorensis and indoxacarb were applied simultaneously. All?combinations of imidacloprid were antagonistic to the virulence of S. riobrave but additive with respect to the?virulence of H. sonorensis . Dinotefuran had an additive effect in all combinations and timings evaluated for both?EPN species. The negative effect of indoxacarb in the progeny of the tested EPN species suggests this insecticide?may have an impact in the recycling of IJs in the soil.
机译：使用Helicoverpa评估了两种在亚利桑那州常用的杀虫剂，二甲呋喃，茚虫威和吡虫啉的杀虫效果，分别针对两种亚利桑那州的病原性线虫（EPN），Heterorhabditis sonorensis（Caborca株）和Steinernema riobrave（SR-5株）。玉米（鳞翅目：夜蛾科）作为昆虫寄主。具体来说，我们评估了它们对EPN生存和适应性（毒力和繁殖）的影响。考虑了三种施用时机：i）首先施用EPN，24小时后施用杀虫剂，ii）首先施用杀虫剂，24小时后施用EPN®，和iii）同时施用EPN和杀虫剂。我们的结果表明，选择的杀虫剂的施用对S. riobrave和H. sonorensis的感染性（IJ）存活率没有显着影响。茚虫威对S. riobrave的生命周期有模棱两可的影响，显示该线虫的毒力具有协同效应，但其子代产量降低了两倍。当同时使用H. sonorensis和茚虫威时，线虫后代的生产也观察到类似的结果。吡虫啉的所有组合都对里氏链球菌的毒力具有拮抗作用，但对Sonorensis的毒力却具有累加作用。 Dinotefuran在两种EPN物种的所有组合和时间选择中均具有加和作用。茚虫威在测试的EPN物种的子代中具有负面影响，表明这种杀虫剂可能对土壤中IJ的再循环产生影响。

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