Effect of temperature on the toxicity of several insecticides to &lt;i&gt;Apolygus lucorum&lt;/i&gt; (Heteroptera: Miridae)

Ma, Yajun; Gao, Zhiling; Dang, Zhihong; Li, Yaofa; Pan, Wenliang

doi:10.1584/jpestics.d11-013

Cited by 20 publications

(21 citation statements)

References 28 publications

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“…However, there is no clear reason for doing so, because our results show that imidacloprid is the least toxic agent to A. lucorum out of all of the insecticides tested in this study. We speculate that the most likely reason for the low toxicity of imidacloprid is that its toxicity is temperature dependent (Ma et al 2012). At a low tested temperature (the tested temperature in this study was 25°C), the toxicity of imidacloprid to A. lucorum was surprisingly much lower than it was at a high temperature (e.g.…”

Section: Discussionmentioning

confidence: 66%

“…The key data of our study showed that there were significant differences between the LD 50 or LC 50 values for the insecticides tested against A. lucorum within each insecticidal class (Tables 1, 2). Many reports have confirmed that fipronil exhibits high toxicity against highly damaging agricultural pests, including cotton plant bugs (Zhang et al 2009;Zhao and Salgado 2010;Ma et al 2012). This conclusion, in relation to A. lucorum, is exemplified by the results demonstrating that fipronil had the highest acute oral and contact toxicity to 4th-instar nymphs and adults.…”

Section: Discussionmentioning

confidence: 86%

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Insecticide susceptibility of the green plant bug, Apolygus lucorum Meyer-Dür (Homoptera: Miridae) and two predatory arthropods

Zhang¹,

Zhang²,

Liu³

et al. 2015

Journal of Plant Protection Research

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The green plant bug (Apolygus lucorum Meyer-Dür) is a key pest of Bt cotton in China. Along with biological control, chemical control is one of the most important strategies in A. lucorum Integrated Pest Management (IPM). The goal of this study was to evaluate the toxicity of eight conventional insecticides to A. lucorum and to assess the susceptibility of two generalist predators Chrysopa sinica (Jieder) and Propylaea japonica (Thunbery) to insecticides that are commonly used in A. lucorum management. Via glass-vial and leaf-dip bioassay, toxicity tests with selected insecticides at two different life-stages of A. lucorum indicated significant differences between the LD50 or LC50 values for these compounds within different insecticidal classes. Phenylpyrazole fipronil had the highest toxicity to 4th-instar nymphs and adults of A. lucorum, whereas neonicotinoid imidacloprid had the lowest toxicity among the insecticides. Females were more tolerant to insecticides than were males, as shown by the higher LD50 values for females. Furthermore, laboratory tests showed that endosulfan had the highest selectivity to C. sinica and P. japonica: the selective toxicity ratios (STRs) were superior to other tested insecticides, particularly imidacloprid, and were 5.396 and 4.749-fold higher than baseline STRs, respectively. From this study, we conclude that fipronil can potentially be used to efficiently control A. lucorum. An alternative control agent worth consideration is endosulfan, owing to its relative safety to non-targeted natural enemies.

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Section: Discussionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 86%

Insecticide susceptibility of the green plant bug, Apolygus lucorum Meyer-Dür (Homoptera: Miridae) and two predatory arthropods

Zhang¹,

Zhang²,

Liu³

et al. 2015

Journal of Plant Protection Research

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“…The effectiveness of this product can be especially influenced by weather conditions at the time of application, as it is known that efficacy of pyrethroids is markedly influenced by high temperatures and solar UV radiation (Kolařík & Rotrekl, 2012b;Ma et al, 2012). These products can completely lose their efficacy, enabling insect pests to continue to survive and feed, so that a grower expecting such an application to prevent seed yield losses will not be successful if the application takes place on an unsuitable date.…”

Section: Discussionmentioning

confidence: 99%

“…After finishing their development, larvae pupate and a new generation of beetles hatches in June and July (Hansen & Boelt, 2008;Ma et al, 2012;Lundin et al, 2012;Rotrekl, 2000). Larvae cause the most significant damage and significantly reduce seed yield (Hansen & Boelt, 2008;Ma et al, 2012). To minimize damage and protect the crops, both agrotechnical (cultural) and chemical methods of control may be used (Kolařík & Rotrekl, 2012a, 2012c.…”

Section: Introductionmentioning

confidence: 99%

Regulation of the abundance of clover seed weevils, Apion spp. (Coleoptera: Curculionidae) in a seed stand of red clover (Trifolium pratense L.)

Kolařík¹,

Rotrekl²

2013

J Entomol Acarol Res

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The clover seed weevils, Apion trifolii and Protapion apricans, members of the genus Apion, are responsible for causing serious economic damage in clover. In 2010-2012, the effectiveness of some insecticides against clover seed weevils in the genus Apion were tested in red clover stands. The efficacy of different products was evaluated on the basis of analyses of specimens trapped in the herb layer of red clover using a sweep net and red clover heads sampled in individual plots. Over the course of these trials, the applications of the products tested resulted in a marked reduction in their numbers (particularly of adults and, to a lesser extent, also of larvae). The highest efficacy was observed with Biscaya 240 (A.I. thiacloprid) and Mospilan 20 SP (A.I. acetamiprid). Results obtained in this study corroborated the low efficacy of the insecticide Karate Zeon Technology 5 CS against seed weevils of the genus Apion.

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“…The imidacloprid solution was then transferred in its entirety to a 50 mL cylindrical beaker and subjected to reduction using sponge iron (excess during degradation) in acidic conditions. Temperature has obvious effects on pesticide degradation (Ma et al, 2012;Wu et al, 2012), therefore, the degradation experiment was carried out in a cylindrical single-compartment where the reactor was externally immersed in water to keep the reaction at a constant temperature of 20 6 2 8C. This ensured the reduction degradation was performed at, approximately, ambient temperature.…”

Section: Methodsmentioning

confidence: 99%

Reduction of Imidacloprid by Sponge Iron and Identification of its Degradation Products

Zhou

Tian

Liu

et al. 2018

Water Environment Research

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In this study, imidacloprid was degraded by sponge iron in aqueous solution via chemical reduction. The effects of initial pH, reaction time, and operating model were investigated. Lower of pH was advantageous to the reduction degradation reaction. The influence of agitation was investigated in terms of reaction kinetics and degradation yield. Imidacloprid degradation with agitation showed first-order reaction kinetics with a reaction rate of 0.0235 min À1 , and degradation without agitation possessed two distinctive kinetics regimes; a rapid reduction in the initial stage and a slower process until removal was complete. Both stages of the degradation showed first-order reaction kinetics with reaction rates of 0.0122 min À1 and 0.0030 min À1 , respectively. Transformation products were identified using high-performance liquid chromatography-mass spectrometry (HPLC-MS). HPLC-MS exhibited nine fragment ions at m/z 97, 155.9, 174.9, 196.9, 211.1, 269.9, 266.1, 279, and 301.1. Finally, a degradation pathway of imidacloprid was proposed. Water Environ. Res., 90, 2049Res., 90, (2018.

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Effect of temperature on the toxicity of several insecticides to <i>Apolygus lucorum</i> (Heteroptera: Miridae)

Cited by 20 publications

References 28 publications

Insecticide susceptibility of the green plant bug, Apolygus lucorum Meyer-Dür (Homoptera: Miridae) and two predatory arthropods

Insecticide susceptibility of the green plant bug, Apolygus lucorum Meyer-Dür (Homoptera: Miridae) and two predatory arthropods

Regulation of the abundance of clover seed weevils, Apion spp. (Coleoptera: Curculionidae) in a seed stand of red clover (Trifolium pratense L.)

Reduction of Imidacloprid by Sponge Iron and Identification of its Degradation Products

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