Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer <i>Aromia bungii</i> Larvae in Dietary Toxicity Test
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 ins...
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MDPI AG
2021-06-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/12/7/592 |
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| author | Eiriki Sunamura Shigeaki Tamura Hisatomo Taki Hiroki Sato Etsuko Shoda-Kagaya Tadahisa Urano |
| author_facet | Eiriki Sunamura Shigeaki Tamura Hisatomo Taki Hiroki Sato Etsuko Shoda-Kagaya Tadahisa Urano |
| author_sort | Eiriki Sunamura |
| collection | DOAJ |
| description | 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 <i>Aromia bungii</i> (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 <i>A. bungii</i> larvae gradually to death. In practical use, rapid suppression of <i>A. bungii</i> 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. |
| first_indexed | 2024-03-10T09:57:43Z |
| format | Article |
| id | doaj.art-5ce6560ebb684ab3a630b8c0031b889d |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-10T09:57:43Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-5ce6560ebb684ab3a630b8c0031b889d2023-11-22T02:12:31ZengMDPI AGInsects2075-44502021-06-0112759210.3390/insects12070592Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer <i>Aromia bungii</i> Larvae in Dietary Toxicity TestEiriki Sunamura0Shigeaki Tamura1Hisatomo Taki2Hiroki Sato3Etsuko Shoda-Kagaya4Tadahisa Urano5Forestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, Ibaraki 305-8687, JapanForestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, Ibaraki 305-8687, JapanForestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, Ibaraki 305-8687, JapanForestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, Ibaraki 305-8687, JapanForestry and Forest Products Research Institute, Matsunosato 1, Tsukuba, Ibaraki 305-8687, JapanKansai Research Center, Forestry and Forest Products Research Institute, Nagaikyutaroh 68, Momoyama-cho, Fushimi-ku, Kyoto 612-0855, JapanIn 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 <i>Aromia bungii</i> (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 <i>A. bungii</i> larvae gradually to death. In practical use, rapid suppression of <i>A. bungii</i> 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.https://www.mdpi.com/2075-4450/12/7/592<i>Aromia bungii</i>biological invasionsCerambycidaechemical controldinotefuranneonicotinoids |
| spellingShingle | Eiriki Sunamura Shigeaki Tamura Hisatomo Taki Hiroki Sato Etsuko Shoda-Kagaya Tadahisa Urano Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer <i>Aromia bungii</i> Larvae in Dietary Toxicity Test Insects <i>Aromia bungii</i> biological invasions Cerambycidae chemical control dinotefuran neonicotinoids |
| title | Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer <i>Aromia bungii</i> Larvae in Dietary Toxicity Test |
| title_full | Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer <i>Aromia bungii</i> Larvae in Dietary Toxicity Test |
| title_fullStr | Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer <i>Aromia bungii</i> Larvae in Dietary Toxicity Test |
| title_full_unstemmed | Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer <i>Aromia bungii</i> Larvae in Dietary Toxicity Test |
| title_short | Efficacy of Two Neonicotinoid Insecticides against Invasive Wood Borer <i>Aromia bungii</i> Larvae in Dietary Toxicity Test |
| title_sort | efficacy of two neonicotinoid insecticides against invasive wood borer i aromia bungii i larvae in dietary toxicity test |
| topic | <i>Aromia bungii</i> biological invasions Cerambycidae chemical control dinotefuran neonicotinoids |
| url | https://www.mdpi.com/2075-4450/12/7/592 |
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