Culex flavivirus infection in a Culex pipiens mosquito colony and its effects on vector competence for Rift Valley fever phlebovirus
Visualitza/Obre
Autor/a
Birnberg, Lotty
Nuñez, Ana I.
Muñoz-Muñoz, Francesc
Vázquez, Ana
Data de publicació
2018-05-23ISSN
1756-3305
Resum
Background
Rift Valley fever is a mosquito-borne zoonotic disease that affects domestic ruminants and humans. Culex flavivirus is an insect-specific flavivirus that naturally exists in field mosquito populations. The influence of Culex flavivirus on Rift Valley fever phlebovirus (RVFV) vector competence of Culex pipiens has not been investigated.
Methods
Culex flavivirus infection in a Cx. pipiens colony was studied by Culex flavivirus oral feeding and intrathoracical inoculation. Similarly, vector competence of Cx. pipiens infected with Culex flavivirus was evaluated for RVFV. Infection, dissemination, transmission rates and transmission efficiency of Culex flavivirus-infected and non-infected Cx. pipiens artificially fed with RVFV infected blood were assessed.
Results
Culex flavivirus was able to infect Cx. pipiens after intrathoracically inoculation in Cx. pipiens mosquitos but not after Culex flavivirus oral feeding. Culex flavivirus did not affect RVFV infection, dissemination and transmission in Cx. pipiens mosquitoes. RVFV could be detected from saliva of both the Culex flavivirus-positive and negative Cx. pipiens females without significant differences. Moreover, RVFV did not interfere with the Culex flavivirus infection in Cx. pipiens mosquitoes.
Conclusions
Culex flavivirus infected and non-infected Cx. pipiens transmit RVFV. Culex flavivirus existing in field-collected Cx. pipiens populations does not affect their vector competence for RVFV. Culex flavivirus may not be an efficient tool for RVFV control in mosquitoes.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
Anglès
Matèries (CDU)
619 - Veterinària
Pàgines
9
Publicat per
BioMed Central
Publicat a
Parasites & Vectors
Citació
Sandra Talavera, Lotty Birnberg, Ana I. Nuñez, Francesc Muñoz-Muñoz, Ana Vázquez and Núria Busquets. Culex flavivirus infection in a Culex pipiens mosquito colony and its effects on vector competence for Rift Valley fever phlebovirus. Parasites & Vectors, 2018,11:310
Número de l'acord de la subvenció
MINECO/Programa Estatal de fomento de la investigación científica y técnica de excelencia/AGL2013-47257-P/ES/Emergencia de la fiebre del valle del Rift en Europa: evaluación del rol de mosquitos autóctonos en la potencial diseminación de la enfermedad/
Programa
Sanitat Animal
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