Estudo dos efeitos da radiação ultravioleta no mosquito Aedes aegypti L.

• Ano de defesa: 2021
• Autor(a) principal: Oliveira, Louise Helena Guimarães de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraíba; Brasil; Biotecnologia; Programa de Pós-Graduação em Biotecnologia; UFPB
• Palavras-chave em Português: Arboviroses; Inseticida; Controle biológico; Insecticide; Biological control; CNPQ::CIENCIAS BIOLOGICAS
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/123456789/22546

Most Brazilian states are infested with Aedes aegypti, which allows the transmission of several diseases. The mosquito is the vector of several important arboviruses, such as dengue, urban yellow fever, zika and chikungunya, among other diseases, being the target of major concern for public health, the main way to combat these diseases is through the control of the vector mosquito. Several studies show the emergence of mosquitoes resistance. Due to the resistance already observed, there is a search for new tools to control this possible vector. However, there is also an environmental concern, as the use of insecticides can directly affect nature. Thus, it is necessary to search for forms of control that would not leave residues in nature. The UV radiation is already used for biological control of some organims, the study of the exposure of this ultraviolet radiation shows itself as an effective and clean way to fight the Aedes aegypti mosquito. The objective of this work was to study the ovicidal, larvicidal, pupicidal and adulticidal activities of ultraviolet radiation in Ae. aegypti. As a method, for the evaluation of ovicidal activity, eggs of Ae. aegypti were exposed and evaluated in the period of 25 days, as a result, a decrease in hatchability of 95.53% of Ae. aegypti was observed. In order to perform larvicidal activity, the larvae were exposed to different periods of light and their mortality was verified in 30, 45, 60 and 180 minutes, as a result, it was possible to observe a mortality of 27.77; 45.53; 76.67 and 96.67% of the larvae, respectively. For the evaluation of pupicidal activity, the pupae of Ae. aegypti were exposed and observed in a 24h period, as a result, it was possible to observe the mortality of 86.67% of the exposed pupae. To carry out the adulticidal activity, the mosquitoes of Ae. aegypti were exposed to ultraviolet light and were observed in 24 and 48 hours, the results showed the mortality of 86.67 and 93.33% of mosquitoes, respectively. All experiments were carried out in triplicate.