Susceptibilidade do aedes aegypti ao inseticida temephos no distrito federal, em 2000

Carvalho, Maria do Socorro Laurentino de; Caldas, Eloísa Dutra; Yoshizawa, Maria Amélia Cavalcanti; Dégallier, Nicolas; Oliveira, Cristiane de; Knox, Monique Britto

doi:10.5123/s0104-16732001000500012

Cited by 5 publications

(4 citation statements)

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“…A opção para combater a dengue continua sendo o controle do A. aegypti por meio de inseticidas químicos sintéticos usados nas campanhas nacionais. Contudo, têm surgido problemas significativos como o aparecimento de resistência (OPAS, 1997;FUNASA, 2002;Campos & Andrade, 2001;Carvalho et al, 2004;Luna et al, 2004).…”

Section: Introductionunclassified

ESTUDO DAS ALTERAÇÕES MORFO-HISTOLÓGICASEM LARVAS DE Aedes aegypti (DIPTERA, CULICIDAE) SUBMETIDAS AO EXTRATO BRUTO ETANÓLICO DESapindus saponaria Lin (SAPINDACEAE)

Barreto¹,

Cavasin²,

Silva³

et al. 2007

Rev Patol Trop

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Section: Introductionunclassified

ESTUDO DAS ALTERAÇÕES MORFO-HISTOLÓGICASEM LARVAS DE Aedes aegypti (DIPTERA, CULICIDAE) SUBMETIDAS AO EXTRATO BRUTO ETANÓLICO DESapindus saponaria Lin (SAPINDACEAE)

Barreto¹,

Cavasin²,

Silva³

et al. 2007

Rev Patol Trop

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“…Since larvicide treatments are performed every 2 months, it is imperative that they Table 3. Evaluation of the mortality of larvae exposed to the sun as a function of the different larvicides tested during the simulated field in Arapiraca, Brazil, 2005. remain active at least during the 2-month interval between visits (Carvalho et al 2000, Da Silva 2012.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Persistence of Three Larvicides Used To Control Aedes aegypti In Arapiraca, Northeastern Brazil

Amorim

Bauzer

Braga

et al. 2019

Journal of the American Mosquito Control Association

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The chemical control of the mosquito Aedes aegypti is a great challenge worldwide, since several populations of this species are already resistant to traditional insecticides, such as temephos. In Brazil, alternative larvicides, such as Bacillus thuringiensis israelensis ( Bti) and pyriproxyfen, have been used more recently. In this study we evaluated the persistence of pyriproxyfen (Sumilarv 0.5%G), 2 commercial formulations of Bti (Vectobac WDG and Vectobac G), and temephos (Fersol 1G) under field and simulated field conditions with treatments exposed to sun and shadow. In the field tests, the 2 formulations of Bti presented less persistence in the 8th wk of evaluation (46% and 37% positivity) compared with temephos (3.6% and 6.8% positivity) and Sumilarv (6.6% and 3.8% positivity) in containers exposed to the sun and shadow, respectively. In the simulated field trial, temephos and the 2 formulations of Bti presented high persistence (100% mortality at 8th wk) when applied in the water box and in deposits placed in the shade. In containers exposed to the sun, the persistence of these products was lower (>80% mortality by temephos after 4 wk, Bti formulations for 3 wk, and Sumilarv for 6 wk). Based on these data, however, Sumilarv presented better performance in the containers exposed to the sun than the 2 formulations of Bti (Vectobac G and Vectobac WDG), which were affected by the sun.

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“…In particular, the organophosphate (OP) temephos is the main larvicide recommended by the Ministry of Health of Brazil to control of larvae of A. aegypti. However, several studies found resistance to temephos in these larvae in different regions of the country (Marcoris et al, 1995(Marcoris et al, , 2003Braga et al, 2004;Lima et al, 2006;Pinheiro and Tadei, 2002;Carvalho et al, 2004). The mechanism 38 F. R. ABE ET AL.…”

Section: Please Scroll Down For Articlementioning

confidence: 92%

Ecotoxicity and Environmental Risk Assessment of Larvicides Used in the Control ofAedes aegyptitoDaphnia magna(Crustacea, Cladocera)

Abe

Coleone

Machado

et al. 2014

Journal of Toxicology and Environmental Health, Part A

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Dengue transmitted by mosquitoes of the genus Aedes, species aegypti, is a major public health concern in Brazil. The chemical control of the mosquito larvae has been performed with the larvicide temephos since 1967. However, vector resistance was reported to temephos in several Brazilian states, and the Ministry of Health ordered the replacement of this larvicide by diflubenzuron (DFB), an inhibitor of chitin synthesis. Both insecticides are diluted in water with larvae and are able to reach aquatic environments in which they subsequently adversely damage nontarget organisms. The aims of this study were to (1) determine the acute toxicity (EC50) and environmental risk (RQ) of DFB and temephos to the microcrustacean Daphnia magna, and (2) evaluate the chronic toxicity (no-observed-effect concentration [NOEC] and lowest-observed-effect concentration [LOEC]) of these larvicides to D. magna. The experiments were performed according to a completely randomized design. The estimated 48-h EC50 of temephos was 0.15 μg/L (lower limit = 0.1 and upper limit = 0.2 μg/L) and the 48-h EC50 of DFB was 0.06 μg/L (lower limit = 0.03 and upper limit = 0.1 μg/L). RQ values were 4.166.7 to DFB and 6.666.6 to temephos. NOEC and LOEC values were respectively 2.5 and 5 ng/L for DFB, and respectively 6.2 and 12.5 ng/L for temephos. Thus, temephos and DFB are classified as highly toxic to Daphnia magna and pose a high environmental risk to this species. Mortality of D. magna was observed at concentrations lower than those used in the field to control A. aegypti larvae.

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Susceptibilidade do aedes aegypti ao inseticida temephos no distrito federal, em 2000

Cited by 5 publications

References 0 publications

ESTUDO DAS ALTERAÇÕES MORFO-HISTOLÓGICASEM LARVAS DE Aedes aegypti (DIPTERA, CULICIDAE) SUBMETIDAS AO EXTRATO BRUTO ETANÓLICO DESapindus saponaria Lin (SAPINDACEAE)

ESTUDO DAS ALTERAÇÕES MORFO-HISTOLÓGICASEM LARVAS DE Aedes aegypti (DIPTERA, CULICIDAE) SUBMETIDAS AO EXTRATO BRUTO ETANÓLICO DESapindus saponaria Lin (SAPINDACEAE)

Evaluation of the Persistence of Three Larvicides Used To Control Aedes aegypti In Arapiraca, Northeastern Brazil

Ecotoxicity and Environmental Risk Assessment of Larvicides Used in the Control ofAedes aegyptitoDaphnia magna(Crustacea, Cladocera)

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