Análise in vitro da ação de carrapaticidas em cepas de Boophilus microplus (Canestrini, 1887) colhidas de bovinos leiteiros da região nordeste do Estado de São Paulo

Soares, Vando Edésio; Silveira, Daniela Miyasaka da; Nunes, Tiago Lot da Silva; Oliveira, Gilson Pereira de; Barbosa, Oeliton Ferreira; Costa, Alvimar José da

doi:10.5433/1679-0359.2001v22n1p85

Cited by 4 publications

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“…These associations were recommended for these producers by Embrapa (n = 47; 40.2%), followed by associations of phosphorates (Caberson®, Ectofós®) (n = 45; 38.5%), phenylpyrazoles (Top-line®) (n = 15; 12.8%) and others (n = 10; 8.5%). Similar results have also been found by several other authors (SOARES et al 2001;ROCHA 2005). Thus, it could be seen that for a large proportion of the farm properties, associations between active agents were the only means for controlling ticks efficiently.…”

Section: Resultssupporting

confidence: 81%

“…The assessments that have been made so far have been limited to evaluations on product performance in certain regions of Brazil, such as Mato Grosso, São Paulo (SOARES et al, 2001); Paraná (SOUZA et al, 2003) and Pernambuco (SANTANA et al, 2001), and also in some other countries HOPE, 2007). Given that linking between the problem of resistance and producers' comprehension is essential for changing the understanding of tick control methods, the aim of the present study was to investigate whether, with greater importance for the process of understanding and adopting strategic control methodologies, producers are in a position to understand and apply strategic control, in order to assess what information should be provided and how to do this.…”

Section: Introductionmentioning

confidence: 99%

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Strategic control of cattle ticks: milk producers' perceptions

Amaral

Rocha

Faccini

et al. 2011

Rev. Bras. Parasitol. Vet.

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In order to evaluate milk producers' knowledge about tests on tick sensitivity to acaricides, efficiency tests and strategic control, questionnaires were delivered to 670 producers. From these, 163 responses were received. These producers had sent ingurgitated female ticks to be subjected to tests on tick sensitivity to acaricides at Embrapa between 2001 and 2005. Most of the completed questionnaires came from the State of Minas Gerais, Brazil. After descriptive analysis and correlation of variables, it was found that 48.5% of the properties owned herds of up to 100 head of cattle and 57.3% of the producers belonged to a cooperative. Among the respondents, 157 (98.7%) applied the acaricide indicated by the efficiency test, and 144 (92.9%) said that they applied strategic control but incorrectly. There was improvement in some control stages. However, only 12 (7%) showed comprehension of all the stages of strategic control. It was concluded that there is a need for continuing assistance, so as to achieve effective improvement in controlling Rhipicephalus (Boophilus) microplus.Keywords: Rhipicephalus (Boophilus) microplus, knowledge, milk producers. ResumoObjetivando avaliar o conhecimento dos produtores de leite que usufruíram do teste de sensibilidade dos carrapatos aos carrapaticidas -teste de eficácia e controle estratégico -foram enviados questionários a 670 produtores. Desses, 163 foram respondidos. Esses produtores representam aqueles que enviaram fêmeas ingurgitadas para proceder aos testes de sensibilidade dos carrapatos aos carrapaticidas pela Embrapa, de 2001 a 2005. Dos respondidos, a maioria localiza-se no Estado de Minas Gerais. Após análise descritiva e cruzamento de variáveis, constatou-se que 48,5% das propriedades possuem rebanho até 100 cabeças de gado; 57,3% produtores pertencem a uma cooperativa. Um total de 157 (98,7%) entrevistados aplicou o acaricida indicado pelo teste de eficácia, e 144 (92,9%) respondentes afirmaram ter seguido o controle estratégico, porém, não de forma correta, havendo, entretanto, melhora em algumas etapas do controle. No entanto, apenas 12 (7%) demonstraram compreender todas as fases do controle estratégico, apesar de terem recebido informações técnicas de como proceder com o controle. Conclui-se que há necessidade de assistência continuada para melhoria efetiva do controle de Rhipicephalus (Boophilus) microplus.Palavras-chave: Rhipicephalus (Boophilus) microplus, conhecimento, produtores de leite.

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Section: Resultssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Strategic control of cattle ticks: milk producers' perceptions

Amaral

Rocha

Faccini

et al. 2011

Rev. Bras. Parasitol. Vet.

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“…Ticks resistance has been reported in various countries (LI et al, 2004;ROSADO-AGUILAR et al, 2008), including Brazil (CAMPOS JÚNIOR;OLIVEIRA, 2005;GOMES et al, 2011), where, there are reports in Rio Grande do Sul (PATARROYO; COSTA, 1980), Minas Gerais, Bahia and Espírito Santo (LEITE et al, 1995), and São Paulo (SOARES et al, 2001). In the state of Pernambuco, Santana et al (2001) verified that synthetic pyrethroids and amitraz showed lower effectiveness, whereas organophosphates and carbamates displayed good action.…”

Section: Introductionmentioning

confidence: 99%

Susceptibility of Rhipicephalus(Boophilus) microplus (Acari: Ixodidae) to pyrethroids and their associations in Pernambuco, Brazil

Santana

Ramos²,

Santana

et al. 2013

Rev. Bras. Parasitol. Vet.

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The synthetic pyrethroids and their associations have been widely used for controlling Rhipicephalus (Boophilus) microplus. The frequent use of acaricides has been inducing the development of resistance in the tick populations. The aim of this study was to assess the susceptibility of R. (B.) microplus populations to pyrethroids and their associations in the region of Garanhuns, Pernambuco, Brazil. In addition, the level of information among farm owners regarding tick control measures was investigated. Ticks were collected directly from naturally infested dairy cattle in the region and were exposed to pyrethroids and their associations. At the same time, an epidemiological questionnaire was applied with the aim of investigating the level of information among the farmers. The results reported here indicate that R. (B.) microplus populations in the dairy region of Garanhuns show resistance to pyrethroids and their associations, except when the product is associated with piperonyl butoxide. Regarding the results from the epidemiological survey, it was seen that there is a considerable lack of information among the farmers in relation to ixodid control measures. The level of ticks resistance to acaricides varied widely across the region studied. No alternative control programs have been implemented among these farms, thus demonstrating that there is a need for more information relating to the biology and control of R. (B.) microplus.Keywords: Ticks, resistance, acaricide, in vitro test, bovine, microregion of Garanhuns. ResumoOs piretróides sintéticos e associações são acaricidas amplamente utilizados para o controle do Rhipicephalus (Boophilus) microplus. O uso frequente destes fármacos tem induzido o surgimento de populações de carrapatos resistentes. Objetivou-se neste estudo avaliar a susceptibilidade de populações de R. (B.) microplus aos piretróides e associações. Além disso, investigou-se o nível de informações dos proprietários com relação às medidas de controle utilizadas. Os carrapatos foram coletados diretamente de bovinos naturalmente infestados na região leiteira de Garanhuns, Pernambuco e expostos a piretróides e suas associações. Contemporaneamente, foi aplicado um questionário epidemiológico com o objetivo de avaliar o nível de informação dos produtores. Os resultados aqui obtidos demonstram que populações de R. (B.) microplus provenientes da região leiteira de Garanhuns apresentam resistência aos piretróides, exceto quando o produto está associado com butóxido de piperonila. Em se tratando dos resultados referentes ao inquérito epidemiológico, verificou-se considerável falta de informação por parte dos produtores com relação às medidas de controle de ixodídeos. Assim, verifica-se que o nível de resistência aos acaricidas é muito variável na região estudada e que não há, nas propriedades, a adoção de programas alternativos de controle, demonstrando a necessidade de maiores informações relacionadas à biologia e ao controle do R. (B.) microplus.Palavras-chave: Carrapatos, resistência, acaricida...

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“…However, the indiscriminate use of these substances has been conducted to the appearance of several cases of tick resistance (Arantes et al, 1995). This phenomenon has been widely reported (Li et al, 2004;Rosado-Aguilar et al, 2008), including various descriptions in Brazil (Campos Júnior;Oliveira, 2005;Gomes et al, 2011), where there are reports in Rio Grande do Sul (Patarroyo;Costa, 1980), Minas Gerais, Espírito Santo (Leite et al, 1995), São Paulo (Soares et al, 2001), Bahia and Pernambuco (Santana et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the efficacy of cypermethrin and amitraz against Rhipicephalus (Boophilus) microplus, in the State of Pernambuco, Brazil

et al. 2016

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The Rhipicephalus (Boophilus )microplus is an important tick species which affect bovines in tropical areas. Its control is based on the use of chemical acaricides, but the frequent use of these substances has been conducted to the development of tick resistance. The aim of this study was to assess the efficacy of cypermethrin and amitraz against R. (B. )microplus collected of bovines from different municipalities of the state of Pernambuco. From August 2009 to July 2011, engorged females were collected and subjected to the "Adult Immersion Test" in order to evaluate the efficacy of cypermethrin and amitraz. The results indicate that populations of R. (B. )microplus from Pernambuco present resistance to acaricides (i.e., cypermethrin and amitraz). In this study, a single population (Brejo da Madre de Deus) was susceptible to cypermethrin, whereas two (Timbaúba and Limoeiro) were susceptible to amitraz. Data herein reported follow a pattern observed in other regions of Brazil and alert to the fact that alternative measures of control should be implemented in this area studied.

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Análise in vitro da ação de carrapaticidas em cepas de Boophilus microplus (Canestrini, 1887) colhidas de bovinos leiteiros da região nordeste do Estado de São Paulo

Cited by 4 publications

References 5 publications

Strategic control of cattle ticks: milk producers' perceptions

Strategic control of cattle ticks: milk producers' perceptions

Susceptibility of Rhipicephalus(Boophilus) microplus (Acari: Ixodidae) to pyrethroids and their associations in Pernambuco, Brazil

Evaluation of the efficacy of cypermethrin and amitraz against Rhipicephalus (Boophilus) microplus, in the State of Pernambuco, Brazil

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