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An efficient and easy method of infection of mosquito larvae from virus-contaminated cell cultures
C Barreau1, F X Jousset, M Cornet
1Unité de Virologie Moléculaire, Station de Recherches de Pathologie Comparée INRA-UA CNRS 1184, Saint Christol-lez-Alès, France.
Abstract:
A new method for efficient infection of Aedes aegypti larvae by the Aedes albopictus densovirus, AaPV is described. It consists of placing first or third instar larvae in culture flasks containing a chronically infected mosquito cell line. After 24 or 48 h of exposure to the contaminated culture, the larvae acquired the virus by feeding on infected cells. Using this technique, up to 95% of first instar Ae. aegypti larvae were found infected by the AaPV.
Insights
A novel method efficiently infects Aedes aegypti mosquito larvae with Aedes albopictus densovirus (AaPV) by feeding on infected cells. This technique achieves up to 95% infection rates in early-stage larvae.
Area of Science:
- Virology
- Entomology
- Molecular Biology
Background:
- Aedes aegypti mosquitoes are significant vectors for diseases like dengue and Zika.
- Controlling mosquito populations is crucial for public health.
- Efficient methods for studying mosquito-borne viruses are needed.
Purpose of the Study:
- To describe a new, efficient method for infecting Aedes aegypti larvae with Aedes albopictus densovirus (AaPV).
- To establish a reliable model for investigating AaPV replication and pathogenesis in its primary vector.
Main Methods:
- First or third instar Aedes aegypti larvae were exposed to a chronically infected Aedes albopictus cell line.
- Larvae were maintained in culture flasks with the contaminated cell line for 24 or 48 hours.
- Virus acquisition was confirmed through feeding on infected cells.
Main Results:
- The described method resulted in efficient infection of Aedes aegypti larvae with AaPV.
- Up to 95% of first instar larvae were successfully infected using this technique.
- Larval infection occurred via ingestion of infected cells from the culture.
Conclusions:
- This feeding-based method provides a highly efficient way to infect Aedes aegypti larvae with AaPV.
- The technique offers a valuable tool for research into densovirus-vector interactions and disease transmission.
- Further studies can utilize this method to explore AaPV's impact on mosquito populations.