Advanced search
Start date
Betweenand


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

Full text
Author(s):
Garbuio, Matheus ; Lima, Alessandra Ramos ; Silva, Kamila Jessie Sammarro ; De Souza, Mariana ; Inada, Natalia Mayumi ; Dias, Lucas Danilo ; Bagnato, Vanderlei Salvador
Total Authors: 7
Document type: Journal article
Source: Photodiagnosis and Photodynamic Therapy; v. 45, p. 8-pg., 2024-01-23.
Abstract

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. (AU)

FAPESP's process: 13/07276-1 - CEPOF - Optics and Photonic Research Center
Grantee:Vanderlei Salvador Bagnato
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 20/06874-6 - Applications of technologies and synthetic methodologies developed under continuous flow conditions at LQBO-UFSCar for the preparation of molecules with biological activities and APIs
Grantee:Kleber Thiago de Oliveira
Support Opportunities: Regular Research Grants
FAPESP's process: 14/50857-8 - National Institute in Basic Optics and Applied to Life Sciences
Grantee:Vanderlei Salvador Bagnato
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 23/11853-6 - Study of photonic supplementation and mechanisms of incorporation of pharmaceutical actives in hydroponic cultivation
Grantee:Alessandra Ramos Lima
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 19/27176-8 - Asymmetric photocatalysis applied to the synthesis of Brivaracetam: synthetic approaches employing enabling technologies for chemical synthesis
Grantee:Kleber Thiago de Oliveira
Support Opportunities: Regular Research Grants