Organophosphate Temephos
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Resistance to temephos and deltamethrin in Aedes aegypti from Brazil between 1985 and 2017
BACKGROUND Aedes aegypti populations in Brazil have been subjected to insecticide selection pressures with variable levels and sources since 1967. Therefore, the Brazilian Ministry of Health (MoH) coordinated the activities of an Ae. aegypti insecticide resistance monitoring network (MoReNAa) from 1999 to 2012. OBJECTIVES The objective of this study was t
Mem. Inst. Oswaldo Cruz. Publicado em: 29/04/2019
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2. Variation in temephos resistance in field populations of Aedes aegypti (Diptera: Culicidae) in the State of Sergipe, Northeast Brazil
Abstract INTRODUCTION The organophosphate temephos was first used in Brazil in the 1960s for the control of Aedes aegypti. Because of its extensive and longstanding use worldwide, selection for mosquito populations resistant to the chemical has been observed not only in different regions of Brazil but also in several parts of the world. The objective of th
Rev. Soc. Bras. Med. Trop.. Publicado em: 2018-06
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3. Larvicidal activity of Syzygium aromaticum (L.) Merr and Citrus sinensis (L.) Osbeck essential oils and their antagonistic effects with temephos in resistant populations of Aedes aegypti
Environmentally friendly botanical larvicides are commonly considered as an alternative to synthetic larvicides against Aedes aegypti Linn. In addition, mosquito resistance to currently used larvicides has motivated research to find new compounds acting via different mechanisms of action, with the goal of controlling the spread of mosquitos. Essential oils h
Mem. Inst. Oswaldo Cruz. Publicado em: 04/07/2016
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4. Spatial and temporal country-wide survey of temephos resistance in Brazilian populations of Aedes aegypti
The organophosphate temephos has been the main insecticide used against larvae of the dengue and yellow fever mosquito (Aedes aegypti) in Brazil since the mid-1980s. Reports of resistance date back to 1995; however, no systematic reports of widespread temephos resistance have occurred to date. As resistance investigation is paramount for strategic decision-m
Mem. Inst. Oswaldo Cruz. Publicado em: 29/04/2016
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5. Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti
IntroductionThe effects of piperonyl butoxide (PBO) on the toxicity of the organophosphate temephos (TE) and the role of esterases in the resistance of Aedes aegypti to this insecticide were evaluated.MethodsA. aegypti L4 larvae susceptible and resistant to TE were pre-treated with PBO solutions in acetone at concentrations of 0.125, 0.25, 0.5, 1, and 2% for
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-10
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6. ASPECTOS DA CAPACIDADE VETORIAL E PERFIL DE SUSCETIBILIDADE AO TEMEPHÓS DE POPULAÇÕES DE AEDES AEGYPTI (DIPTERA: CULICIDAE) DE DIFERENTES REGIÕES DO ESTADO DE SERGIPE, BRASIL / CAPACITY ASPECTS OF VECTOR PROFILE AND SUSCEPTIBILITY TO A TEMEPHOS POPULATIONS OF AEDES AEGYPTI (DIPTERA: CULICIDAE) OF DIFFERENT REGIONS OF THE STATE OF SERGIPE, BRAZIL.
Estudos da ecologia de populações de Aedes aegypti são fundamentais para se conhecer o comportamento e as adaptações apresentadas pela espécie de acordo com o ambiente em que vivem e que se evidenciaram durante o processo evolutivo em função das diferentes pressões seletivas que as espécies enfrentam em seu ambiente de origem. Assim, este estudo te
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/02/2012
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7. Fitness evaluation of two Brazilian Aedes aegypti field populations with distinct levels of resistance to the organophosphate temephos
In Brazil, decades of dengue vector control using organophosphates and pyrethroids have led to dissemination of resistance. Although these insecticides have been employed for decades against Aedes aegypti in the country, knowledge of the impact of temephos resistance on vector viability is limited. We evaluated several fitness parameters in two Brazilian Ae.
Mem. Inst. Oswaldo Cruz. Publicado em: 2012-11
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8. The efficacy of a chitin synthesis inhibitor against field populations of organophosphate-resistant Aedes aegypti in Brazil
The mosquito Aedes aegypti is the main focus of dengue control campaigns. Because of widespread resistance against conventional chemical insecticides, chitin synthesis inhibitors (CSIs) are considered control alternatives. We evaluated the resistance status of four Brazilian Ae. aegypti populations to both the organophosphate temephos and the pyrethroid delt
Mem. Inst. Oswaldo Cruz. Publicado em: 2012-05
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9. Impact of water renewal on the residual effect of larvicides in the control of Aedes aegypti
This study was carried out to evaluate the residual effect of three larvicides under laboratory conditions for 100 days in Aedes aegypti. The larval mortality rate was measured without water renewal or with daily water renewal (80%). With temephos, there was 100% mortality in both groups until the 70th day. In the Bacillus thuringiensis israelensis (Bti)-WDG
Publicado em: 2011
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10. Aedes aegypti resistance to temephos during 2001 in several municipalities in the states of Rio de Janeiro, Sergipe, and Alagoas, Brazil
For more than 30 years temephos, an organophosphate insecticide, has been the sole larvicide used in Brazil in the control of Aedes aegypti. Organophosphates were also used for adult control, being replaced by pyrethroids since l999. In this same year, the Brazilian Health Foundation started the coordination of the Ae. aegypti Insecticide Resistance Monitori
Memórias do Instituto Oswaldo Cruz. Publicado em: 2004-03
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11. Effect of phenobarbital on inducing insecticide tolerance and esterase changes in Aedes aegypti (Diptera: Culicidae)
The effect of phenobarbital (PB) on the induction of tolerance to the organophosphorous insecticide temephos (TE) was investigated in Aedes aegypti L4 larvae submitted to two different PB-treatments:(1) continuous treatment from the egg to the larval L4 stage and (2) discontinuous treatment in which L4 larvae were exposed for 30 h. Mosquitoes from two Brazil
Genetics and Molecular Biology. Publicado em: 2004
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12. Resistance of Aedes aegypti from the state of São Paulo, Brazil, to organophosphates insecticides
Since the reintroduction of Aedes aegypti in the state of São Paulo, in the middle of the 1980-decade, organophosphate insecticides are being used to control the dengue vector. In 1996, an annual program for monitoring the susceptibility of Ae. aegypti to the insecticides was implemented. Some of the results of this monitoring program are presented. Ae. aeg
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-07