Atividade larvicida do óleo de Anacardium humile Saint Hill sobre Aedes aegypti (Linnaeus, 1762) (Diptera, Culicidae)

Abstract

Revista da Sociedade Brasileira de Medicina Tropical 41(6):586-589, nov-dez, 2008 ARTIGO/ARTICLEA crescente urbanização proporcionou condições favoráveis para a propagação do Aedes aegypti, especialmente pelo uso intensivo de materiais descartáveis aumentando, assim, o número de criadouros potenciais para o mosquito vetor do flavivírus causador da dengue. O mesmo dissemina-se conforme a expansão do Aedes aegypti, que hoje ocupa praticamente toda a faixa cosmo tropical da terra. As epidemias, desencadeadas a partir de 1986 no Brasil, estão sempre relacionadas com a introdução de um novo sorotipo do vírus ABSTRACTThe objective of this study was to evaluate the potential of Anacardium humile (monkey nuts) against Aedes aegypti larvae. Hexane, ethanol and aqueous extracts and oil from leaves were obtained from plant material collected from the Brazilian savanna. These were tested at concentrations of 1%, 0.5%, 0.25%, 0.125%, 0.05% and 0.0125%, diluted in 1% dimethyl sulfoxide. The dead larvae were counted 24 hours later. The Probit analysis method was used to obtain the LC 50 and the respective confidence intervals. The conclusion was that only the oil extracted from Anacardium humile leaves caused 100% mortality among fourth-instar Aedes aegypti larvae, using concentrations of up to 0.125%. This seems to indicate that the active ingredients are present in the most apolar phase. This indicates that this plant has potential use as a larvicide against Aedes aegypti. However, new tests should be carried out using other plant organs, as well as using other methods and solvents for the extraction. . As falhas operacionais de campanhas no controle do Aedes aegypti e o aparecimento de populações resistentes aos inseticidas utilizados revelam a necessidade de mudanças nas ações de controle e no manejo dos produtos. Esta situação é Key

<b>Cashew nut shell liquid and formulation: toxicity during the germination of lettuce, tomato seeds and coffee senna and seedling formation

“…CNSL has been used as a potential larvicide targeting Aedes aegypti (Linnaeus, 1762) (Shaalan, Canyon, Younes, AbdelWahab, & Mansour, 2005;Porto, Roel, Machado, Cardoso, & Oliveira, 2013;Dourado et al, 2015), a vector of dengue and other arboviruses of relevance that is considered to be a serious public health problem.…”

“…Mendonça et al (2005) described the lethal concentration (CL 50 ) to be 14.5 mg L -1 ; Shaalan et al (2005) suggested 10 mg L -1 ; Asogwa, Mokwunye, Yahaya, and Ajao (2007) cited 100% mortality at 60, 80, and 10 mg mL -1 concentrations; and Porto et al (2013) recently used a base formulation of CNSL in concentrations of 0.002 to 10 mg mL -1 . Unfortunately, the reforestation and forestry programs of A. occidentale in various regions of Brazil do not consider some inherent family characteristics.…”

“…As CNLS and its formulations are indicated for use as an alternative for the larval control of A. aegypti (Porto et al, 2013;Dourado et al, 2015) and the use of these products occurs in the environment where the larvae develop, it is necessary to evaluate allelopathic effects. Therefore, the aim of this study is to evaluate the effects of commercial CNLS and a CNLS-based phytoproduct formulation on the germination and development of L. sativa, L. esculentum and S. obtusifolia and to determine the quantitative and qualitative chemical composition of CNLS and the evaluated formulation.…”

In vitro evaluation of the effect of botanical formulations used in the control of Aedes aegypti L. (Diptera: Culicidae) on liver enzymes.

“…(1792) (Diptera: Culicidae), using the determined LC 90 dosages of 0.135mg/mL for liquid cashew nuts and 0.202mg/ mL for ricinoleic acid as references (7) . The effects of botanical insecticides on the activity of liver enzymes were assessed as the ability inhibit ChE and increase MDH levels.…”

Larvicidal Properties of Botanical Extracts of &lt;i&gt;Lawsonia inermis&lt;/i&gt; against &lt;i&gt;Anopheles stephensi&lt;/i&gt;

“…In South America, the extracts of native plants have been used against Aedes aegypti larvae [37]. Etonia rozmari plant extract found a significant impact on the immature stages of Culicidae mosquitoes [38].…”