Resistance to DDT and pyrethroids in Brazilian populations of Sitophilus zeamais Motsch. (Coleoptera: Curculionidae)

Guedes, Raul Narciso C.; Lima, JoséOscar G.; Santos, J. P. dos; Cruz, Cosme Damião

doi:10.1016/0022-474x(94)00043-s

Cited by 88 publications

(96 citation statements)

References 16 publications

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“…The main method for controlling stored-product insects in warm climates is the use of insecticides due to the lack of other control alternatives (Guedes 1991). However, insecticide resistance is evident in many field populations of insects that infest stored products, where these compounds are extensively used (Champ & Dyte 1976, Badmin 1990, Guedes et al 1995, 1997bc, 1998, Subramanyam & Hagstrum 1996.…”

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confidence: 99%

“…The relative importance of the different insect pest species of stored products varies among areas and depends on the stored product (Champ & Dyte 1976). In Brazil, some species prevail due to their high reproduction capacity, broad distribution and high level of acquired resistance to the fumigants and contact insecticides , Guedes et al 1995, Lorini & Galley 1999.…”

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Spread of phosphine resistance among brazilian populations of three species of stored product insects

Pimentel¹,

Faroni²,

Silva³

et al. 2010

Neotrop. entomol.

113

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-The resistance to fumigant insecticides in stored-products insects is often recorded. Several factors influence the evolution of insecticide resistance. Among these, the frequency of applications and the migration of resistant populations are of primary importance for the stored-product insects. The aim of this study was to characterize the spectrum and investigate the status of phosphine resistance in Brazil, in 13 populations of the coleoptera Tribolium castaneum Herbst (Tenebrionidae), ten populations of Rhyzopertha dominica (Fabr.) (Bostrichidae), and eight populations of Oryzaephilus surinamensis (L.) (Silvanidae). The pattern of resistance dispersion in the populations of these species was also verified. The bioassays for the detection of phosphine resistance followed the FAO standard method. To test the influence of migration in the evolution of the phosphine resistance, the difference of mortality in the discriminating concentration and the geographical distance among each pair wise combination of collection sites were correlated. None of the populations exhibited mortality above 90% in the discriminating concentration, for the three species. Mortality in the discriminating concentration increased with the geographical distance for R. dominica and O. surinamensis. However, no significant linear response was observed among the variables for T. castaneum populations. These results suggest that the dispersion of insects and the local selection are relevant in the evolution of the phosphine resistance in populations of R. dominica and O. surinamensis. In contrast, grain trade and local selection are probably the factors that determine the evolution of the phosphine resistance in populations of T. castaneum.

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confidence: 99%

mentioning

confidence: 99%

Spread of phosphine resistance among brazilian populations of three species of stored product insects

Pimentel¹,

Faroni²,

Silva³

et al. 2010

Neotrop. entomol.

113

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“…Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae) praga cosmopolita de cereais armazenados (Throne, 1994) sujeita ao uso intenso de inseticidas, especialmente em áreas tropicais, devido à carência de métodos de controle alternativos eficientes (Guedes et al, 1995(Guedes et al, , 1996; entretanto, a crescente pressão sobre as indústrias de grãos para reduzirem sua dependência ao uso de inseticidas, tem levado à adoção do manejo integrado de pragas que, por sua vez, pode ser auxiliado pelas predições realizadas por modelos de crescimento populacional de insetos. Os modelos matemáticos são ferramentas importantes para predizer, avaliar e compreender a dinâmica de populações de pragas em ecossistemas naturais ou criados pelo homem em uma variedade de condições ambientais e de ações de manejo (Smerage, 1992).…”

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Modelos analíticos do crescimento populacional de Sitophilus zeamais em trigo armazenado

Silva¹,

Faroni²,

Guedes³

et al. 2006

Rev. bras. eng. agríc. ambient.

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RESUMOPara se atingir os objetivos propostos neste trabalho, desenvolveram-se modelos analíticos do crescimento populacional de S. zeamais em grãos de trigo armazenados com teor de umidade de 11,1%. O crescimento populacional foi avaliado durante 90 dias de armazenagem, nas temperaturas de 16, 20, 24, 28, 32 e 36 °C, partindo-se de infestações iniciais que variaram de 1,3 a 9,3 insetos por kg de trigo. Os modelos explicaram de 93,9 a 98,9% da variação na densidade populacional. O crescimento populacional foi afetado pelo tamanho da população que iniciou a infestação, ou seja, quanto maior foi a infestação inicial maior também foi o crescimento populacional ao longo do tempo de armazenagem, que ocorreu na temperatura de 28 °C e diminuiu drasticamente abaixo e acima desta. Na temperatura de 36 °C, todas as populações foram extintas entre 15 e 45 dias de armazenagem, mas nenhuma população se extinguiu a 16 °C. Os modelos apresentaram excelentes ajustes, estando em conformidade com os princípios gerais da dinâmica de populações de insetos em um sistema de grãos armazenados e descrevem muito bem o crescimento populacional de S. zeamais em relação ao efeito da temperatura e da densidade populacional inicial. Palavras-chave: grãos, insetos, infestação, temperaturaAnalytical models for population growth of Sitophilus zeamais in stored wheat ABSTRACTAnalytical models of population growth were developed for Sitophilus zeamais, in grain wheat stored at 11.1% of moisture content. Population growth was monitored for 90 days at the temperatures of 16, 20, 24, 28, 32 and 36 °C and initial adult population densities varying between 1.3 and 9.3 insects per kg. The models obtained explained between 93.9 and 98.99% of the variation in density of adult insects. The population growth was affected by initial population density of infestation and increased proportionately with degree of infestation. The highest population growth occurred at 28 °C and drastically decreased for lower and higher temperatures. Population extinction took place between 15 and 45 days of storage for all samples maintained at 36 °C, but no extinction was observed at 16 °C. The models obtained present excellent adjustments and are in agreement with general principles underlying the pest-storage system; they reproduce very well the general effect of temperature and initial population densities upon S. zeamais population growth.

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“…exposed for a long time to DDT on grain developed resistance to DDT and the pyrethroids deltamethrin, cypermethrin and permethrin (Guedes et al 1995). Also pyrethrin resistant strains of Sitophilus granarius (L.) showed resistance to DDT and other pyrethroids (Prickett 1980).…”

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The cross-resistance spectrum in deltamethrin resistance strains of Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae)

Lorini¹,

Galley

2001

Neotrop. Entomol.

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Resistência Cruzada em Raças de Rhyzopertha dominica (F.) (Coleoptera; Bostrychidae)Resistentes ao Inseticida Deltametrina RESUMO -Objetivou-se verificar a existência de resistência cruzada em raças de Rhyzopertha dominica (F.) resistentes ao inseticida deltametrina. Os experimentos foram conduzidos testando outros três inseticidas, também usados para controlar pragas de grãos armazenados, como permetrina (piretróide), pirimifós-metil e clorpirifós-metil (organofosforados). Quatro raças da praga foram usadas: duas raças suscetíveis, BR4 e UK1, e duas raças resistentes, BR6 e BR7, todas mantidas em laboratório após a coleta nos armazéns. Inicialmente todas as raças foram avaliadas em sua susceptibilidade ao inseticida deltametrina. Posteriormente, cada raça foi submetida a pressão de seleção ao inseticida deltametrina por três gerações consecutivas e no final da terceira geração cada raça foi avaliada em sua suscetibilidade com todos os inseticidas para determinar a resistência cruzada. Os resultados mostraram a existência de resistência cruzada para o inseticida permetrina, nas raças BR6 e BR7 de R. dominica. Não houve resistência cruzada aos dois inseticidas organofosforados testados. Isso indica que a resistência cruzada ocorreu dentro do mesmo grupo químico de inseticidas e não entre diferentes grupos.PALAVRAS-CHAVE: Insecta, pragas de grãos armazenados, permetrina, pirimifós-metil, clorpirifós-metil.ABSTRACT -In order to verify if there was cross-resistance in deltamethrin resistance strains of Rhyzopertha dominica (F.), experiments were carried out with three insecticides used in stored grain to control pests: permethrin (pyrethroid), pirimiphos-methyl and chlorpyrifos-methyl (organophosphates). Three strains from Brazil (BR4, BR6 and BR7) and one from United Kingdom (UK1) were tested. The strains BR4 and UK1 were susceptible and BR6 and BR7 were resistant to deltamethrin. Initially all strains were assessed in their susceptibility to deltamethrin insecticide. Then, after they were submitted to deltamethrin selection pressure throughout three generations, each strain was assessed with all other insecticides to determine the cross-resistance spectrum. Results showed that cross-resistance to permethrin existed in the BR6 and BR7 strains of R. dominica. No crossresistance to the organophosphates, pirimiphos-methyl and chlorpyrifos-methyl, was detected in deltamethrin-resistant strains.KEY WORDS: Insecta, stored grain pest, permethrin, pirimiphos-methyl, chlorpyrifos-methyl.The cross-resistance spectrum exhibited by a species is a very useful tool in detecting the mechanism involved in resistance of a pest to a specific pesticide (Scott 1990). The patterns of cross-resistance of the house fly Musca domestica L. showed that resistance to organophosphorus insecticides conferred resistance to carbamate but not to pyrethroids (Kudamatsu et al. 1983). This pattern was similar to one found by Champ and Campbell-Brown (Champ & Campbell-Brown 1970b), where malathion resistant strains of Tribolium castaneum (Herbst) we...

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Resistance to DDT and pyrethroids in Brazilian populations of Sitophilus zeamais Motsch. (Coleoptera: Curculionidae)

Cited by 88 publications

References 16 publications

Spread of phosphine resistance among brazilian populations of three species of stored product insects

Spread of phosphine resistance among brazilian populations of three species of stored product insects

Modelos analíticos do crescimento populacional de Sitophilus zeamais em trigo armazenado

The cross-resistance spectrum in deltamethrin resistance strains of Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae)

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