Last Updated: 05/10/2023
Larvicidal action of orange oil encapsulated in yeast and Bacillus thuringiensis (Bti) in the control of vectors of the genera Aedes and Anopheles in the state of Pará, Brazil
Objectives
*Original title in Portuguese: Ação larvicida do óleo de laranja encapsulado em levedura e do Bacillus thuringiensis (Bti) no controle de vetores dos gêneros Aedes e Anopheles no estado do Pará-Brasil
In this work, lethal concentrations of orange OELE (C. sinensis) and Bti will be tested to verify the mortality of Aedes aegypti (Rockfeller) and Anophelines from the Brazilian Amazon, in order to attest to their effectiveness, lifetime in semi-field and its possible indication in management programs of larval sources in the control of malaria and generating foci to control arboviruses.
According to the World Health Organization (WHO), vector-borne diseases have a significant impact on public health in the region of the Americas and worldwide, as they represent more than 17% of the global burden of infectious diseases and cause more than 700,000 deaths. individuals per year. In this sense, mosquitoes contribute to the increase of these diseases, with some species of the Anopheles genus being vectors of malaria parasites, while some species of the Aedes genus are the main vectors of arboviruses that cause dengue, Zika and chikungunya. The control of these vectors has been carried out by the continuous and indiscriminate use of chemical insecticides for several decades, which led to the development of populations of mosquitoes resistant to the products, and promoted several deleterious and harmful effects to non-target organisms and the environment. In order to reverse this situation, the search for alternative products of natural origin that may be made up of Essential Oils (EO), such as orange oil (Citrus sinensis), and entomopathogenic bacteria Bacillus thuringiensis isralelensis (Bti) has intensified. These larvicides can be alternatives to neurotoxic chemical insecticides, helping to reduce the negative impacts of these chemical compounds, especially in vulnerable ecosystems such as the Amazon.
Jan 2021
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