Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer Aromia bungii Larvae in Dietary Toxicity Test.
Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer Aromia bungii Larvae in Dietary Toxicity Test.
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两种新烟碱类杀虫剂在膳食毒性试验中对入侵木螟幼虫的功效。
DOI：
10.3390/insects12070592
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发表时间：
2021-06-29
期刊：
影响因子：
3
通讯作者：
Urano T
中科院分区：
文献类型：
--
作者：
Sunamura E;Tamura S;Taki H;Sato H;Shoda-Kagaya E;Urano T
本文研究了噻虫嗪和呋虫胺两种烟碱类杀虫剂对日本小食心虫的防治效果。用不同浓度的杀虫剂喂饲小幼虫和大幼虫，然后在实验室中饲养3周（新生幼虫）或12周（大幼虫）。暴露于高浓度两种杀虫剂（新生儿≥1 ppm，大型幼虫≥10 ppm）的幼虫的摄食量立即下降。它们的生长受到显著抑制，存活率随时间逐渐下降（大型幼虫在12周内下降≥87%）。新生儿和大型幼虫之间的这些影响是相似的，但新生儿受到更低的杀虫剂浓度比大型幼虫。这两种杀虫剂使A.白蛉幼虫在实际应用中，快速抑制A.通过将这些杀虫剂注射到受感染的树木中，可以预期到树皮钻蛀损害。然而，可能需要相对长期的杀虫剂保留以杀死树木中的幼虫，特别是大幼虫。新生儿可以用比大幼虫少的杀虫剂和短的接触时间来控制。近年来，树干注药技术在防治木材蛀干害虫中得到了实际应用。然而，很少有研究详细调查杀虫剂和木材蛀干害虫之间的剂量-反应关系。采用噻虫嗪和呋虫胺两种市售烟碱类杀虫剂，研究了其对入侵蛀干害虫小食心虫幼虫的剂量-反应关系。在实验室用含不同浓度杀虫剂（0.01-100 ppm）的人工饲料饲养新生幼虫和晚龄幼虫，记录其食物挖掘活动、存活率和体重变化。暴露于高浓度噻虫嗪或呋虫胺（新生幼虫≥1 ppm，晚龄幼虫≥10 ppm）的幼虫的摄食量立即下降。在12周内，晚龄幼虫的体重和存活率逐渐下降。这些结果表明，这两种烟碱类化合物对A.幼虫逐渐死亡。在实际应用中，快速抑制A.树干注射烟碱类杀虫剂可引起树皮蛀干。然而，可能需要相对长期的杀虫剂保留以杀死大型幼虫。与较大的幼虫相比，新生幼虫可以用较低的杀虫剂剂量和较短的接触时间来控制。
This study investigated the effects of two neonicotinoid insecticides (thiamethoxam and dinotefuran) on alien wood borer Aromia bungii, which invaded Japan recently. Small neonates and large larvae were fed artificial diet with different insecticide concentrations and then reared for 3 (neonates) or 12 (large larvae) weeks in the laboratory. Diet excavation immediately dropped in larvae exposed to high concentrations of both insecticides (≥1 ppm in neonates and ≥10 ppm in large larvae). Their growth was significantly suppressed, and the survival rate gradually declined over time (≥87% decline over 12 weeks in large larvae). These effects were similar between neonates and large larvae, but neonates were affected more by lower insecticide concentrations than large larvae. The two insecticides gradually debilitate A. bungii larvae. In practical use, rapid suppression of A. bungii wood boring damage can be expected by injecting these insecticides into infested trees. However, a relatively long–term retention of the insecticides may be required to kill the larvae in the trees, especially large larvae. Neonates may be controlled with less insecticides and shorter exposure than large larvae. In recent years, insecticide trunk injection was put into practical use for controlling wood boring pests. However, few studies have investigated the dose–response relationships between insecticides and wood–boring pests in detail. This study used two commercial formulations of the neonicotinoid insecticides thiamethoxam and dinotefuran and investigated their dose–response relationships with invasive wood borer Aromia bungii (Coleoptera: Cerambycidae) larvae. Neonates and late instar larvae were reared with an artificial diet containing different insecticide concentrations (0.01–100 ppm) in the laboratory, and their diet excavation activity, survival rate, and weight change were recorded. Diet excavation immediately dropped in larvae exposed to high concentrations of thiamethoxam or dinotefuran (≥1 ppm in neonates and ≥10 ppm in late instar larvae). The weight and survival rate gradually declined over 12 weeks in late instar larvae. These results suggest that the two neonicotinoids intoxicate and debilitate A. bungii larvae gradually to death. In practical use, rapid suppression of A. bungii wood boring damage can be expected by trunk injection of neonicotinoid insecticides. However, a relatively long-term retention of the insecticides may be required to kill large larvae. Neonates may be controlled with lower insecticide dosage and shorter exposure than larger larvae.
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影响因子：
2.8
作者：
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通讯作者：
Drinkwater, TW
影响因子：
4.1
作者：
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影响因子：
2.2
作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
2.2
作者：
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通讯作者：
Cappaert, David