Influence of temperature combined with photodynamic inactivation on the development of Aedes aegypti.

Autor: Garbuio M; Environmental Biophotonics Laboratory, São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil; PPG Biotec, Federal University of São Carlos, São Carlos, SP, Brazil., Lima AR; Environmental Biophotonics Laboratory, São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil. Electronic address: ramosalessandra09@gmail.com., Silva KJS; Environmental Biophotonics Laboratory, São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil., De Souza M; Environmental Biophotonics Laboratory, São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil., Inada NM; Environmental Biophotonics Laboratory, São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil., Dias LD; Laboratório de Novos Materiais, Universidade Evangélica de Goiás, Anápolis, Brazil., Bagnato VS; Environmental Biophotonics Laboratory, São Carlos Institute of Physics, University of São Paulo, São Carlos, Brazil; Department of Biomedical Engineering, Texas A&M University, Texas, USA.
Jazyk: angličtina
Zdroj: Photodiagnosis and photodynamic therapy [Photodiagnosis Photodyn Ther] 2024 Feb; Vol. 45, pp. 103977. Date of Electronic Publication: 2024 Jan 13.
DOI: 10.1016/j.pdpdt.2024.103977
Abstrakt: To reduce the speed of selection of populations resistant to chemical insecticides, photodynamic inactivation (PDI) against Aedes aegypti is a hot-topic and promising alternative technique to vector control. Temperature is an important factor in the survival of Ae. aegypti larvae and mosquitoes as it influences physiology, behavior, and ecology. This work aimed to evaluate parameters of the biological cycle of Ae. aegypti such as: hatching rate, larval development, adult mosquito longevity, sex ratio, weight, and lethal concentration of larval mortality (LC) through the combination of PDI with different temperatures. The number of larvae found after 48 h suggests that temperature affects hatching rate. Additionally, results showed a delay in development of surviving larvae after PDI when compared to control groups, and there was a reduction in the longevity of mosquitoes that undertook photodynamic action. PDI also led to a predominance of male insects, and observed weight indicates that the inactivation method may have also interfered in mosquito size. The results point to a satisfactory performance of PDI at all tested temperatures. Experimental conditions that were not lethal to all larvae implied that PDI impacts the mosquitoes' biological cycle. Though metabolism and development are improved at higher temperatures, so is PDI action, thus maintaining the net benefit. Therefore, it is assumed that the proposed photolarvicide can be useful in reducing arbovirus transmission, and results invite for future research in different abiotic conditions.
(Copyright © 2024. Published by Elsevier B.V.)
Databáze: MEDLINE
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