Potencial de Bacillus thuringiensis israelensis Berliner no controle de Aedes aegypti

Polanczyk, Ricardo Antônio; Garcia, Marcelo de Oliveira; Alves, Sérgio Batista

doi:10.1590/s0034-89102003000600020

Cited by 26 publications

(17 citation statements)

References 7 publications

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“…Porém, o uso frequente e em doses cada vez maiores desses produtos tem evidenciado os principais problemas devido ao uso destes inseticidas: o aparecimento de populações resistentes de mosquitos a esses produtos e os danos ambientais provocados por seu uso intensivo (Luna et al, 2004;Carvalho & Silva, 2000;Polanczyk et al, 2003).…”

Section: Introductionunclassified

Avaliação da atividade larvicida do óleo essencial do Zingiber officinale Roscoe (gengibre) frente ao mosquito Aedes aegypti

Gomes

Silva

Pinheiro

et al. 2016

Rev. bras. plantas med.

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Evaluation of the larvicidal effectof the essential oil of Zingiber officinale Roscoe (ginger) against the mosquito Aedes aegypti. This study analyzes the larvicidal effect of the oil of Zingiber officinale Roscoe against larvae in third stage of the mosquito Aedes aegypti (Linnaeus 1792). The essential oil was extracted quantitatively by hydrodistillation and we calculated the oil's LC 50 from Reed-Muench (1938) and Pizzi (1950) methods, respectively. The essential oil obtained LC 50 of 76.07 (±2.24) ug mL -1 , and yield of 0.52% m/v. The results indicate that the essential oil assessed has substances that provide larvicidal effect against Aedes aegypti.

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Section: Introductionunclassified

Avaliação da atividade larvicida do óleo essencial do Zingiber officinale Roscoe (gengibre) frente ao mosquito Aedes aegypti

Gomes

Silva

Pinheiro

et al. 2016

Rev. bras. plantas med.

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“…The cysteine, tyrosine, and tryptophan amino acids of the crystals are affected and the toxin is inactivated. Moreover, according to Polanczyk et al (2003), other abiotic factors such as temperature and rainfall interfere in the persistence of Bti. Therefore, it is important to consider the environmental particularities of the region where the product will be used in order to have a satisfactory control.…”

Section: Type Of Larvicidementioning

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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“…Commonly used insecticides belong to the organophosphate and pyrethroid families. The main issues regarding the use of these insecticides are the appearance of mosquito populations resistant to these products and the environmental damage provoked by their intensive use (Polanczyk et al, 2003;Luna et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Larvicidal activity of Dalbergia brasiliensis (Fabaceae - Papilionoideae) on Aedes aegypti

Luciane¹,

Cristiane²,

Ocampos³

et al. 2015

Afr. J. Pharm. Pharmacol.

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Dengue is a viral infectious disease, transmitted by mosquito of the genus Aedes. This work describes the in vivo toxicity analysis of the crude EtOH extract (EEC), hexanic (HF), chlorophormic (CF), ethyl acetate (EAF) fractions, of bark and leaves, and isoflavonoids, from Dalbergia brasiliensis, an arboreal species with wide distribution in Brazilian territory. When considering the issue of controlling the vector Aedes aegypti, the investigation of natural products shows as an important field once natural products can demonstrate fast and effective activity and less environmental impact than synthetic compounds. In this context, we evaluated the activity of the crude extract and fractions of Dalbergia brasiliensis in larvae on the third developmental stage. Five concentrations (0; 125; 250; 500 and 1000 µg/ml) were used on the assays, with 4 repetitions for each treatment, using fifteen 24 h exposed larvae for each repetition. The assays showed that all extracts, fractions and isoflavonoids induced mortality, indicating a larvicidal effect. However, when comparing the results, it becomes evident that the chlorophormic fraction of the bark (BCF) and ethyl acetate fraction of the leaves (LEAF) were the most active, with DL 50 barely 25 and 24 μg/ml, respectively. External morphological alterations were verified in all larvae exposed to D. brasiliensis, after a 24 h exposure. The main alterations observed for the extracts were rigid but easily breakable exoskeleton and elongation of the anterior portion to the thorax. The results observed in this work shows that Dalbergia brasiliensis has an important larvicidal potential.

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Potencial de Bacillus thuringiensis israelensis Berliner no controle de Aedes aegypti

Cited by 26 publications

References 7 publications

Avaliação da atividade larvicida do óleo essencial do Zingiber officinale Roscoe (gengibre) frente ao mosquito Aedes aegypti

Avaliação da atividade larvicida do óleo essencial do Zingiber officinale Roscoe (gengibre) frente ao mosquito Aedes aegypti

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

Larvicidal activity of Dalbergia brasiliensis (Fabaceae - Papilionoideae) on Aedes aegypti

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