The Experts below are selected from a list of 306 Experts worldwide ranked by ideXlab platform
Stuart R. Reitz - One of the best experts on this subject based on the ideXlab platform.
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Western flower thrips resistance to Insecticides: detection, mechanisms and management strategies
Pest management science, 2012Co-Authors: Yulin Gao, Zhongren Lei, Stuart R. ReitzAbstract:Insecticide resistance continues to be one of the most important issues facing agricultural production. The challenges in Insecticide resistance and its management are exemplified by the situation with the western flower thrips Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae). This highly invasive pest has a great propensity for developing Insecticide resistance because of its biological attributes, and cases of resistance to most classes of Insecticides used for its management have been detected. To combat Insecticide resistance in the western flower thrips, several Insecticide resistance management (IRM) programs have been developed around the world, and these are discussed. Successful programs rely on non-insecticidal tactics, such as biological and cultural controls and host plant resistance, to reduce population pressures, rotations among Insecticides of different mode of action classes to conserve Insecticide efficacy, resistance monitoring, sampling to determine the need for Insecticide applications and education to assure proper implementation. More judicious Insecticide use is possible with the development of well-founded economic thresholds for more cropping systems. While growers will continue to rely on Insecticides as part of western-flower-thrips- and thrips-transmitted virus management, more effective management of these pests will be achieved by considering their management in the context of overall integrated pest management, with IRM being a key component of those comprehensive programs.
Pablo Bielza - One of the best experts on this subject based on the ideXlab platform.
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Insecticide resistance management strategies against the western flower thrips frankliniella occidentalis
Pest Management Science, 2008Co-Authors: Pablo BielzaAbstract:Western flower thrips (WFT), Frankliniella occidentalis (Pergande), is an economically important pest of a wide range of crops grown throughout the world. Insecticide resistance has been documented in many populations of WFT. Biological and behavioural characteristics and pest management practices that promote Insecticide resistance are discussed. In addition, an overview is provided of the development of Insecticide resistance in F. occidentalis populations and the resistance mechanisms involved. Owing to widespread resistance to most conventional Insecticides, a new approach to Insecticide resistance management (IRM) of F. occidentalis is needed. The IRM strategy proposed consists of two parts. Firstly, a general strategy to minimise the use of Insecticides in order to reduce selection pressure. Secondly, a strategy designed to avoid selection of resistance mechanisms, considering cross-resistance patterns and resistance mechanisms.
Chino Cantor Araceli - One of the best experts on this subject based on the ideXlab platform.
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Manejo de la resistencia a insecticidas en el mosquito Aades aegypti (Linneus, 1762) en Guerrero, México.
Colegio de Postgraduados (COLPOS), 2014Co-Authors: Chino Cantor AraceliAbstract:El dengue es una de las enfermedades más graves a nivel mundial en salud pública, y a la fecha el uso de insecticidas químicos ha sido la principal medida de control del vector Aedes aegypti transmisor del virus causal del dengue. Con la finalidad de aportar bases para definir una estrategia de manejo regional de insecticidas, se determinó la susceptibilidad de poblaciones de Aedes aegypti L., provenientes de tres regiones de Guerrero, México (Tierra Caliente, Costa Chica y Acapulco), a los insecticidas malatión, temefos, clorpirifós étilico, pirimifós-metil, permetrina, lambda cialotrina, propoxur y espinosina. La población susceptible New Orleans se usó como referencia. Los productos en grado técnico y comercial se evaluaron por aplicación residual en larvas de cuarto estadio temprano, de acuerdo a la metodología propuesta por la Organización Mundial de la Salud (OMS). La mortalidad se registró 24 h después de aplicar los insecticidas y mediante análisis Probit se determinaron los valores de las CL50 y el factor de resistencia para cada producto. Las tres poblaciones de A. aegypti resultaron resistentes al insecticida lambda-cialotrina, y las provenientes de la Costa Chica y Acapulco moderadamente resistentes al pirimifós-metil. En contraste, las tres poblaciones mostraron susceptibilidad al insecticida malatión, temefós, clorpirifós, permetrina, propoxur y espinosina. No obstante, aunque la mayor cantidad de los productos evaluados resultaron efectivos, se recomienda que estos se usen en rotación con insecticidas de diferente modo de acción y en conjunto con otras alternativas, como la remoción de criaderos, a fin de conservar la vida útil de los productos autorizados. El presente trabajo aporta información referencial de gran utilidad para el desarrollo e implementación de estrategias para el manejo y vigilancia de la resistencia de A. aegypti a insecticidas a nivel regional en Guerrero, México. _______________ RESISTANCE MANAGEMENT TO InsecticideS IN Aedes aegypti (Linneus, 1762) FROM GUERRERO, MÉXICO. ABSTRACT: Dengue fever is one of the most serious diseases in public health around the world, and chemical Insecticides have been the most important management strategy used to control the mosquito Aedes aegypti, dengue virus vector. In order to provide bases to define a regional Insecticide management strategy, the susceptibility of populations of Aedes aegypti from three regions of Guerrero, México (Tierra Caliente, Costa Chica and Acapulco), to Insecticides malathion, temephos, chlorpyriphos, pirimiphos-metil, permethrin, lambda-cyhalothrin, propoxur, and spinosin was determinated. The New Orleans population was used as a reference. Commercial and technical grade Insecticides were evaluated by residual application in early fourth instar larvae according to the methodology proposed by the World Health Organization (WHO). The mortality was recorded 24 h after of exposure. Probit analysis was used to determine the response lines log dose-mortality, LC50 values and the resistant factor for each product. Results indicated that the three populations of A. aegypti were resistant to the Insecticide lambda cyhalothrin, and the populations from Acapulco and Costa Chica were moderately resistant to pirimiphos methyl. In contrast, the three field populations were susceptible to malathion, temephos, chlorpyriphos, permethrin, propoxur and spinosin. However, although some products were found to be effective, it is recommended to use them in a rotation bases combining different mode of action Insecticides and in conjunction with other alternatives, as removal of breeding sites, to preserve the effective life of authorized products. This study provides useful reference information for the development and implementation of strategies for the managing and monitoring local Insecticide resistance of A. aegypti, in Guerrero, México
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Manejo de la resistencia a insecticidas en el mosquito Aades aegypti (Linneus, 1762) en Guerrero, México.
Colegio de Postgraduados (COLPOS), 2013Co-Authors: Chino Cantor AraceliAbstract:El dengue es una de las enfermedades más graves a nivel mundial en salud pública, y a la fecha el uso de insecticidas químicos ha sido la principal medida de control del vector Aedes aegypti transmisor del virus causal del dengue. Con la finalidad de aportar bases para definir una estrategia de manejo regional de insecticidas, se determinó la susceptibilidad de poblaciones de Aedes aegypti L., provenientes de tres regiones de Guerrero, México (Tierra Caliente, Costa Chica y Acapulco), a los insecticidas malatión, temefos, clorpirifós étilico, pirimifós-metil, permetrina, lambda cialotrina, propoxur y espinosina. La población susceptible New Orleans se usó como referencia. Los productos en grado técnico y comercial se evaluaron por aplicación residual en larvas de cuarto estadio temprano, de acuerdo a la metodología propuesta por la Organización Mundial de la Salud (OMS). La mortalidad se registró 24 h después de aplicar los insecticidas y mediante análisis Probit se determinaron los valores de las CL50 y el factor de resistencia para cada producto. Las tres poblaciones de A. aegypti resultaron resistentes al insecticida lambda-cialotrina, y las provenientes de la Costa Chica y Acapulco moderadamente resistentes al pirimifós-metil. En contraste, las tres poblaciones mostraron susceptibilidad al insecticida malatión, temefós, clorpirifós, permetrina, propoxur y espinosina. No obstante, aunque la mayor cantidad de los productos evaluados resultaron efectivos, se recomienda que estos se usen en rotación con insecticidas de diferente modo de acción y en conjunto con otras alternativas, como la remoción de criaderos, a fin de conservar la vida útil de los productos autorizados. El presente trabajo aporta información referencial de gran utilidad para el desarrollo e implementación de estrategias para el manejo y vigilancia de la resistencia de A. aegypti a insecticidas a nivel regional en Guerrero, México. _______________ RESISTANCE MANAGEMENT TO InsecticideS IN Aedes aegypti (Linneus, 1762) FROM GUERRERO, MÉXICO. ABSTRACT: Dengue fever is one of the most serious diseases in public health around the world, and chemical Insecticides have been the most important management strategy used to control the mosquito Aedes aegypti, dengue virus vector. In order to provide bases to define a regional Insecticide management strategy, the susceptibility of populations of Aedes aegypti from three regions of Guerrero, México (Tierra Caliente, Costa Chica and Acapulco), to Insecticides malathion, temephos, chlorpyriphos, pirimiphos-metil, permethrin, lambda-cyhalothrin, propoxur, and spinosin was determinated. The New Orleans population was used as a reference. Commercial and technical grade Insecticides were evaluated by residual application in early fourth instar larvae according to the methodology proposed by the World Health Organization (WHO). The mortality was recorded 24 h after of exposure. Probit analysis was used to determine the response lines log dose-mortality, LC50 values and the resistant factor for each product. Results indicated that the three populations of A. aegypti were resistant to the Insecticide lambda cyhalothrin, and the populations from Acapulco and Costa Chica were moderately resistant to pirimiphos methyl. In contrast, the three field populations were susceptible to malathion, temephos, chlorpyriphos, permethrin, propoxur and spinosin. However, although some products were found to be effective, it is recommended to use them in a rotation bases combining different mode of action Insecticides and in conjunction with other alternatives, as removal of breeding sites, to preserve the effective life of authorized products. This study provides useful reference information for the development and implementation of strategies for the managing and monitoring local Insecticide resistance of A. aegypti, in Guerrero, México.Tesis (Maestría en Ciencias, especialista en Entomología y Acarología).- Colegio de Postgraduados, 2013.Consejo Nacional de Ciencia y Tecnología (CONACYT)
Yulin Gao - One of the best experts on this subject based on the ideXlab platform.
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Western flower thrips resistance to Insecticides: detection, mechanisms and management strategies
Pest management science, 2012Co-Authors: Yulin Gao, Zhongren Lei, Stuart R. ReitzAbstract:Insecticide resistance continues to be one of the most important issues facing agricultural production. The challenges in Insecticide resistance and its management are exemplified by the situation with the western flower thrips Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae). This highly invasive pest has a great propensity for developing Insecticide resistance because of its biological attributes, and cases of resistance to most classes of Insecticides used for its management have been detected. To combat Insecticide resistance in the western flower thrips, several Insecticide resistance management (IRM) programs have been developed around the world, and these are discussed. Successful programs rely on non-insecticidal tactics, such as biological and cultural controls and host plant resistance, to reduce population pressures, rotations among Insecticides of different mode of action classes to conserve Insecticide efficacy, resistance monitoring, sampling to determine the need for Insecticide applications and education to assure proper implementation. More judicious Insecticide use is possible with the development of well-founded economic thresholds for more cropping systems. While growers will continue to rely on Insecticides as part of western-flower-thrips- and thrips-transmitted virus management, more effective management of these pests will be achieved by considering their management in the context of overall integrated pest management, with IRM being a key component of those comprehensive programs.
Mohamed A Ahmed - One of the best experts on this subject based on the ideXlab platform.
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synergistic action of octopamine receptor agonists on the activity of selected novel Insecticides for control of dengue vector aedes aegypti diptera culicidae mosquito
Pesticide Biochemistry and Physiology, 2015Co-Authors: Mohamed A Ahmed, Christoph F A VogelAbstract:Studying Insecticide resistance in mosquitoes has attracted the attention of many scientists to elucidate the pathways of resistance development and to design novel strategies in order to prevent or minimize the spread and evolution of resistance. Here, we tested the synergistic action of piperonyl butoxide (PBO) and two octopamine receptor (OR) agonists, amitraz (AMZ) and chlordimeform (CDM) on selected novel Insecticides to increase their lethal action on the fourth instar larvae of Aedes aegypti L. However, chlorfenapyr was the most toxic Insecticide (LC50 = 193, 102, and 48 ng/ml, after 24, 48, and 72 h exposure, respectively) tested. Further, PBO synergized all Insecticides and the most toxic combinatorial Insecticide was nitenpyram even after 48 and 72 h exposure. In addition, OR agonists significantly synergized most of the selected Insecticides especially after 48 and 72 h exposure. The results imply that the synergistic effects of amitraz are a promising approach in increasing the potency of certain Insecticides in controlling the dengue vector Ae. aegypti mosquito.
