Spatial distribution and esterase activity in populations of Aedes (Stegomyia) aegypti (Linnaeus) (Diptera: Culicidae) resistant to temephos

Gambarra, Wanessa Porto Tito; Martins, Walter Fabricio Silva; Lilioso, Maurício; Albuquerque, Ingredy Meneses Cavalcanti de; Apolinário, Otávia Karla dos Santos; Beserra, Eduardo B.

doi:10.1590/0037-8682-1727-2013

Cited by 20 publications

(27 citation statements)

References 21 publications

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“…The scarcity of studies on Culicidae in Paraíba is one of the factors contributing to the lack of records of its species in the state. Many studies in the state are concentrated in the Aedes aegypti (Linnaeus, 1762) and Aedes albopictus (Skuse, 1894) species, dealing mainly with biological and bio-ecological studies on insecticide resistance [42][43][44][45], population [46] and competition genetics [47,48]. These both species were not founded during the catchings.…”

Section: The Possible Pathogens Vector Capacity Of Captured Specimensmentioning

confidence: 99%

New Records of Culicidae Species with Medical Importance in the State of Paraíba, Brazil

Aragão¹,

Monteiro²,

Beserra³

2017

JAST-A

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This paper aimed to investigate the Culicidae fauna in the state of Paraíba and review the possible pathogens vector capacity of captured specimens. The catches occurred on November from day 17 to 21, 2014 in Mata do Buraquinho, João Pessoa/PB and were performed with the use of aerial insect net and an oral aspirator. There were 88 Culicidae specimens collected from the Buraquinho Forest. This is the first report of Aedes fulvithorax, A. scapularis, A. serratus, A. taeniorhynchus, Anopheles nimbus, Coquillettidia albicosta, C. venezuelensis, Limatus durhamii and Mansonia titillans, also genus Wyeomyia in Paraíba state. The capacity of these mosquitoes to transmit diseases, mainly arboviruses, outlines the need for epidemiological surveillance in the state.

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Section: The Possible Pathogens Vector Capacity Of Captured Specimensmentioning

confidence: 99%

New Records of Culicidae Species with Medical Importance in the State of Paraíba, Brazil

Aragão¹,

Monteiro²,

Beserra³

2017

JAST-A

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“…The intense and long-term use of chemical insecticides for vector control has selected for populations of resistant mosquitoes and reduced both the presence of susceptible individuals and the variability of field populations 1 . Chemical insecticides are still widely used in vector control programs, despite selection for resistant populations of Aedes aegypti and Aedes albopictus, which threatens the effectiveness of control programs 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Temephos-containing larvicides in emulsifiable concentrate preparations, diluted solutions, granules, and slow release formulations 19 are commercially available, and can be applied in different ways depending on the place and rate of a required application 1 . Temephos-based larvicides have many advantages over other classes of insecticides, such as a low odor, low cost, and low toxicity 15 , and because they can be safely used in drinking water when the dosage do not exceed 56-112g/ha (5.6-11.2mg/m 2 ) or 1mg/l 20 .…”

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confidence: 99%

Variation in temephos resistance in field populations of Aedes aegypti (Diptera: Culicidae) in the State of Sergipe, Northeast Brazil

Corte

Melo

Dolabella

et al. 2018

Rev. Soc. Bras. Med. Trop.

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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 this study was to evaluate the susceptibility of Ae. aegypti to the organophosphate temephos, a larvicide used in vector control activities in Sergipe/Northeast Brazil. Methods: This study included mosquito populations from seven municipalities of Sergipe and was carried out from October 2010 to August 2011. Qualitative bioassays of diagnostic dose and dose responses were performed. The resistance ratio was calculated based on lethal concentrations for mosquitoes of the susceptible Rockefeller strain. Results: All populations were classified as resistant to temephos. The resistance ratio ranged from 22.2 to 297.9, the lowest being seen in Aracaju, a coastal area of the state, and the highest in Pinhão, a semi-arid region, 96.6km from Aracaju. Conclusions: High levels of temephos resistance were observed in the Ae. aegypti populations of Sergipe. The variation between regions indicates that there have been different regimes of insecticide use and also points to the potential of small cities to generate and spread insecticide resistance.

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“…Ciudades fronterizas de esta región, tales como Foz de Iguazú (Brasil) y Puerto Iguazú (Argentina) han reportado estudios de evaluación de resistencia de Ae. aegypti en los cuales hacen referencia a modificaciones en la susceptibilidad de las poblaciones naturales, identificando niveles bajos de resistencia a Temefos (12,20). Así, la aplicación de estos compuestos constituye una poderosa fuerza evolutiva, al permitir la sobrevivencia de aquellos individuos que poseen características fenotípicas de resistencia y éstos heredan esa capacidad a sus descendientes.…”

Section: Introductionunclassified

Aedes aegypti (Díptera-Culicidae) Susceptibility to Temephos in Ciudad del Este, Alto Paraná, Paraguay

Coronel

Dias

Rodovalho

et al. 2016

Mem. Inst. Investig. Cienc. Salud

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I. Perfil de susceptibilidad a Temefos en poblaciones de Aedes aegypti (Diptera: Culicidae) de Ciudad del Este -Alto Paraná, Paraguay Mem. Inst. Investig. Cienc. Salud. 2016;14(2): 98-105 R E S U M E NEn Paraguay, el control del mosquito Aedes aegypti involucrado en la transmisión de varias arbovirosis implica la utilización del Temefos, un organofosforado que ha sido utilizado por los programas nacionales para el control vectorial por más de dos décadas en busca de la reducción de los estadios larvarios. En vista de la necesidad de evaluar periódicamente la actividad larvicida del compuesto químico mencionado, este estudio tuvo como objetivo monitorear el perfil de susceptibilidad de larvas de Ae. aegypti al Temefos. Para ello se aplicó un estudio analítico experimental con ensayos biológicos tipo dosisrespuesta, utilizando larvas del tercer estadio de la primera generación procedentes de una colonia de mosquitos colectada en Ciudad del Este. Las larvas fueron expuestas a la acción del Temefos a diferentes concentraciones definidas por un pre-test. Se registraron valores correspondientes al número de larvas expuestas y mortalidad al término de cada ensayo. Los resultados fueron concentración letal CL50 = 0,00966 mg/L y CL90 = 0,03015mg/L, a partir de estos valores se obtuvieron los indicadores cuantitativos de resistencia, Razón de resistencia RR50 = 2,3734 y RR90 = 4,1643 respectivamente. Este último es un indicativo de resistencia baja en las poblaciones de Ae. aegypti evaluadas, acorde con rangos estandarizados (RR>3<5). Los resultados observados en las poblaciones silvestres de larvas revelan una situación de alerta, considerando que el presente estudio evidenció un proceso de resistencia incipiente al Temefos. Finalmente, basados en los resultados se recomienda plantear y ejecutar estrategias basadas en acciones que permitan preservar la actividad larvicida de este compuesto, evitando el aumento progresivo de resistencia en las poblaciones silvestres. Palabras claves: Aedes aegypti -Temefos -Control vectorial.Aedes aegypti (Díptera-Culicidae) Susceptibility to Temephos in Ciudad del Este, Alto Paraná, Paraguay A B S T R A C TIn Paraguay, the control of Aedes aegypti mosquitoes, involved in the transmission of several arboviruses, implies the use of temephos, an organophosphate that has been used by national vector control programs for more than two decades in search of reducing larval stages. In view of the need to evaluate periodically the larvicidal activity of this chemical compound, this study aimed to monitor the susceptibility profile to temephos of larval

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Spatial distribution and esterase activity in populations of Aedes (Stegomyia) aegypti (Linnaeus) (Diptera: Culicidae) resistant to temephos

Cited by 20 publications

References 21 publications

New Records of Culicidae Species with Medical Importance in the State of Paraíba, Brazil

New Records of Culicidae Species with Medical Importance in the State of Paraíba, Brazil

Variation in temephos resistance in field populations of Aedes aegypti (Diptera: Culicidae) in the State of Sergipe, Northeast Brazil

Aedes aegypti (Díptera-Culicidae) Susceptibility to Temephos in Ciudad del Este, Alto Paraná, Paraguay

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