Management of Resistance in Arthropods

Georghiou, George P.

doi:10.1007/978-1-4684-4466-7_32

Cited by 213 publications

(250 citation statements)

References 44 publications

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“…This suggests that cross-resistance between cyfluthrin and cypermethrin and multiple resistances between cypermethrin and dichlorvos has occurred in these populations. The use of insecticides with different modes of action could affect the frequency of individuals resistant to one pesticide which is declining during the application of an alternate insecticide (Georghiou 1983).…”

Section: Discussionmentioning

confidence: 99%

Susceptibility of Alphitobius diaperinus (Panzer) (Coleoptera, Tenebrionidae) to cypermethrin, dichlorvos and triflumuron in southern Brazil

Chernaki-Leffer¹,

Sosa–Gómez²,

Almeida³

et al. 2011

Rev. Bras. entomol.

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ABSTRACT. Susceptibility of Alphitobius diaperinus (Panzer) (Coleoptera, Tenebrionidae) to cypermethrin, dichlorvos and triflumuron in southern Brazil. The lesser mealworm, Alphitobius diaperinus (Panzer), is an important insect pest in poultry houses in Brazil. Susceptibility of the lesser mealworm collected from eight poultry houses in Paraná state, southern Brazil, was evaluated for cypermethrin, dichlorvos and triflumuron. Adult A. diaperinus were tested in bioassays with cypermethrin and dichlorvos. Larvae were fed rabbit feed wetted with a triflumuron-water solution. Concentration-mortality regressions were estimated using Probit analysis and resistance ratios were calculated based on the susceptible population. Among the field populations evaluated, cypermethrin LC 50 values for adults, ranged from 68.1 to 6,263 ng (AI)/cm 2 . LC 50 values for adults challenged with dichlorvos ranged from 10.3 to 1,385 ng (AI)/cm 2 . One population from Pato Branco showed reduced susceptibility to triflumuron (LC 50 = 272 µg (AI)/ml of solution) when compared to the most susceptible population (LC 50 = 109.8 µg (AI)/ml). Application of cypermethrin and dichlorvos analogues should be managed with caution to minimize insecticide resistance problems.KEYWORDS. Insect growth regulator; lesser mealworm; poultry house; pyrethroid; organophosphates. RESUMO. Suscetibilidade de Alphitobius diaperinus (Panzer) (Coleoptera, Tenebrionidae) a cipermetrina, diclorvós e triflumurom no sul do Brasil. O cascudinho, Alphitobius diaperinus (Panzer), é uma importante praga em aviários no Brasil. A suscetibilidade do cascudinho à cipermetrina, diclorvós e triflumurom foi avaliada em oito aviários do Estado do Paraná, Brasil. Adultos de A. diaperinus foram testados mediante bioensaios com cipermetrina e diclorvós. As larvas foram alimentadas com ração para coelhos impregnada com suspensões de triflumurom. As regressões de concentração-mortalidade foram estimadas usando análise de Probit e as razões de resistência calculadas com base na população suscetível. Entre as populações de campo avaliadas, os valores da CL 50 para adultos tratados com cipermetrina variaram entre 68,1 to 6.263 ng (IA)/cm 2 . Os valores da CL 50 para adultos tratados com diclorvós variaram de 10,3 to 1.385 ng (IA)/cm 2 . Uma população de Pato Branco apresentou reduzida suscetibilidade ao triflumurom (CL 50 = 272 µg (IA)/ml), quando comparada à população mais suscetível (CL 50 = 109,8 µg (IA)/ml de solução). Cipermetrina, diclorvós e análogos devem ser manejados e aplicados com cautela para minimizar os problemas de resistência a inseticidas.

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Section: Discussionmentioning

confidence: 99%

Susceptibility of Alphitobius diaperinus (Panzer) (Coleoptera, Tenebrionidae) to cypermethrin, dichlorvos and triflumuron in southern Brazil

Chernaki-Leffer¹,

Sosa–Gómez²,

Almeida³

et al. 2011

Rev. Bras. entomol.

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“…O custo adaptativo associado à resistência e a imigração de indivíduos suscetíveis de áreas não tratadas para as tratadas são as condições básicas para o sucesso das estratégias de manejo da resistência de pragas a pesticidas, principalmente para aquelas que preconizam o uso moderado do produto e rotação ou mistura de produtos químicos (Georghiou, 1983;Tabashnik, 1989).…”

Section: Custo Adaptativo Associado à Resistênciaunclassified

“…As estratégias de manejo da resistência de pragas a pesticidas são divididas em três categorias: manejo por moderação, manejo por saturação e manejo por ataque múltiplo (Georghiou, 1983). Estratégias de manejo da resistência por moderação têm como premissa o uso menos freqüente de produtos químicos mediante a adoção de táticas alternativas de controle (Georghiou, 1983).…”

Section: Implicações Para a Implementação De Estratégias De Manejo Daunclassified

“…A implementação destas estratégias não depende apenas da adoção do uso racional dos inseticidas mediante a diminuição, rotação ou mistura de produtos químicos (Georghiou, 1983). O conhecimento de fatores genéticos e bioecológicos ligados à evolução da resistência tem sido fundamental para o desenvolvimento e aperfeiçoamento das estratégias de manejo da resistência.…”

Section: Introductionunclassified

“…O conhecimento de fatores genéticos e bioecológicos ligados à evolução da resistência tem sido fundamental para o desenvolvimento e aperfeiçoamento das estratégias de manejo da resistência. Neste contexto, a estimativa de intervalos mínimos para o restabelecimento da suscetibilidade, avaliação do custo adaptativo associado à resistência, importância das áreas de refúgio para indivíduos suscetíveis e avaliação da capacidade de dispersão do organismo alvo, dentre outros fatores, ajudam a dimensionar as estratégias de manejo da resistência e a entender os sucessos e fracassos das mesmas (Georghiou, 1983;Roush & Daly, 1990;Omoto et al, 1995).…”

Section: Introductionunclassified

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Dinâmica da resistência de Brevipalpus phoenicis (Geijskes, 1939) (Acari: Tenuipalpidae) ao acaricida dicofol.

Alves¹

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Acaricide resistance management of leprosis mite (Brevipalpus phoenicis) in Brazilian citrus

Omoto

1998

Pestic. Sci.

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IntroductionThe Brazilian citrus industry is responsible for more than 30% of world citrus production.1 In order to compete in a global market, new production technologies are constantly reviewed and adopted by citrus producers. At the moment, among major problems that a †ect citrus production in Brazil, the phytophagous mite Brevipalpus phoenicis (Geijskes) is one of the most serious pests because it transmits citrus leprosis virus.2h4 Symptoms of the leprosis disease appear on fruits, leaves and stems and can lead to premature leaf and fruit drop, or even the death of the plant. For its control, great progress in the area of integrated pest management (IPM) has been achieved by Brazilian scientists. Studies on the bioecology of leprosis mite,5h7 sampling procedures,8 cultural practices,6,9 pesticide selectivity,10,11 and biological control11h13 have all contributed to improve leprosis mite management in citrus groves. However, we still rely on the use of chemicals for e †ective control of this pest.Approximately US$80 million are spent per year on acaricides in Brazilian citrus groves, which represents 21% of the citrus production cost.14 Acaricide use has increased due to the occurrence of another important acarine pest, the citrus rust mite, Phyllocoptruta oleivora (Ashmead). Both B. phoenicis and P. oleivora occur throughout the year on citrus trees. However, the critical period of mite infestation di †ers for each species. P. oleivora is a major problem during the summer and fall seasons when the temperature and relative humidity are very high. On the other hand, population densities of B. phoenicis start increasing when the relative humidity is lower, i.e. during the winter and spring seasons under Brazilian conditions.6 Hence acaricides are used throughout the citrus growing season with an average of two to four applications per year.Failure to control B. phoenicis with conventional acaricides has been reported frequently by citrus growers and advisors. Interestingly, control problems with this pest have also been detected for some new molecules that are coming to the market. Because of constant selection pressure with acaricides, the evolution of resistance in B. phoenicis could be one of the major factors a †ecting the efficacy of some products. Despite intensive use of acaricides on citrus in Brazil, there is a lack of research on the detection and monitoring of pest resistance to pesticides. This summary reports work to implement acaricide resistance management for B. phoenicis in Brazilian citrus. Factors a †ecting the evolution of resistance in Brevipalpus phoenicisFactors that may promote the development of resistance in B. phoenicis include its mode of reproduction, predominantly by thelytoky, and the karyotype of only two heterologous chromosomes.15 From an evolutionary perspective, thelytoky is often thought to be an evolutionary "dead endÏ because it increases homozygosity and mutational load, and limits or inhibits genetic recombination. However, the holokinetic chromosome structure and invert...

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Management of Resistance in Arthropods

Cited by 213 publications

References 44 publications

Susceptibility of Alphitobius diaperinus (Panzer) (Coleoptera, Tenebrionidae) to cypermethrin, dichlorvos and triflumuron in southern Brazil

Susceptibility of Alphitobius diaperinus (Panzer) (Coleoptera, Tenebrionidae) to cypermethrin, dichlorvos and triflumuron in southern Brazil

Dinâmica da resistência de Brevipalpus phoenicis (Geijskes, 1939) (Acari: Tenuipalpidae) ao acaricida dicofol.

Acaricide resistance management of leprosis mite (Brevipalpus phoenicis) in Brazilian citrus

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