Effects of gamma radiation on the vector competence of Aedes aegypti (diptera: Culicidae) to transmit Zika virus

Effects of gamma radiation on the vector competence of Aedes aegypti (diptera: Culicidae) to transmit Zika virus

•Aedes aegypti females were exposed to 40 Gy of gamma radiation.•Side effects on the vector competence of Aedes aegypti females were evaluated after gamma irradiation.•Female mosquitoes irradiated with 40 Gy, although completely infertile, were as competent for Zika virus as those not exposed to the...

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Published in:Acta tropica Vol. 239; p. 106831
Main Authors: da Silva, Edvane Borges, de Mendonça, Carlos Messias, Guedes, Duschinka Ribeiro Duarte, Paiva, Marcelo Henrique Santos, Mendonça, Jaziela de Arruda, Dias, Elisângela Santos Ferreira, Florêncio, Sloana Giesta Lemos, Amaral, Ademir, Netto, André Maciel, Lopes, Constância Flávia Junqueira Ayres, de Melo-Santos, Maria Alice Varjal
Format: Journal Article
Language:English
Published: Netherlands Elsevier B.V 01-03-2023
Subjects:
Aedes
Animals
Female
Gamma Rays
Genetic damage
Infertility
Insecta
Ionizing radiation
Male
Mosquito Vectors
Sterile insect technique
Zika virus
Zika Virus - genetics
Zika Virus Infection
Genetic damage
Ionizing radiation
Zika virus
Sterile insect technique
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Summary:•Aedes aegypti females were exposed to 40 Gy of gamma radiation.•Side effects on the vector competence of Aedes aegypti females were evaluated after gamma irradiation.•Female mosquitoes irradiated with 40 Gy, although completely infertile, were as competent for Zika virus as those not exposed to the radiation.•At a dose of 40 Gy, gamma irradiation reduces the proportion of infective mosquitoes. One of the limitations of the Sterile Insect Technique (SIT), conventionally performed by ionizing radiation, regards separating males from females, which is not 100% effective. Some irradiated females may be released together with males in the field at SIT. The present study aimed to evaluate the influence of ionizing radiation on the ability of Aedes aegypti mosquitoes to transmit the Zika virus after exposing female pupae to a 40 Gy of gamma radiation. The results suggest that the genetic damage induced by exposure of females to this dose level promotes their total sterility, but it does not influence their vector competence. However, our data point out that ionizing radiation may decrease the proportion of infective mosquitoes. [Display omitted]
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ISSN:0001-706X
1873-6254
DOI:10.1016/j.actatropica.2023.106831