|
Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060 EISSN: 1678-8060
Vol. 111, No. 7, 2016, pp. 443-449
|
Bioline Code: oc16066
Full paper language: English
Document type: Research Article
Document available free of charge
|
|
Memórias do Instituto Oswaldo Cruz, Vol. 111, No. 7, 2016, pp. 443-449
en |
Larvicidal activity of Syzygium aromaticum (L.) Merr and Citrus sinensis (L.) Osbeck essential oils and their antagonistic effects with temephos in resistant populations of Aedes aegypti
Araujo, Adriana Faraco de Oliveira; Ribeiro-Paes, João Tadeu; de Deus, Juliana Telles; Cavalcanti, Sócrates Cabral de Holanda; Nunes, Rogéria de Souza; Alves, Péricles Barreto & Macoris, Maria de Lourdes da Graça
Abstract
Environmentally friendly botanical larvicides are commonly considered as an alternative to synthetic larvicides
against Aedes aegypti Linn. In addition, mosquito resistance to currently used larvicides has motivated research to
find new compounds acting via different mechanisms of action, with the goal of controlling the spread of mosquitos.
Essential oils have been widely studied for this purpose. This work aims to evaluate the larvicidal potential of
S. aromaticum and
C. sinensis essential oils, either alone or in combination with temephos, on Ae. aegypti
populations having different levels of organophosphate resistance. The 50% lethal concentration (LC50) of the essential
oils alone and in combination with temephos and the influence of essential oils on vector oviposition were
evaluated. The results revealed that essential oils exhibited similar larvicidal activity in resistant populations and
susceptible populations. However,
Syzygium aromaticum and
C. sinensis essential
oils in combination with temephos did not
decrease resistance profiles. The presence of the evaluated essential oils in oviposition sites significantly decreased
the number of eggs compared to sites with tap water. Therefore, the evaluated essential oils are suitable for use in
mosquito resistance management, whereas their combinations with temephos are not recommended. Additionally,
repellency should be considered during formulation development to avoid mosquito deterrence.
Keywords
Syzygium aromaticum; Citrus sinensis; Aedes aegypti; vector control; larvicide; dengue
|
|
© Copyright 2016 - Memórias do Instituto Oswaldo Cruz Alternative site location: http://memorias.ioc.fiocruz.br
|
|