Related Experiment Videos
[Experimental study of densovirus infection transmission in blood-sucking mosquito populations]
Abstract:
The paper presents the results of laboratory study of the modes of entomopathogenic densonucleasis virus transmission in the population of blood-sucking Culicidae mosquitoes. It was established that densovirus infection was horizontally transmitted through feeding of larvae on the bodies of desonucleasis-infected insects as well as contamination of the environment by infected larvae. Thus, the death rate in populations of various mosquito species attained 25.9-70.8%. Vertical transmission of the virus alters the ratio of sexes at the stage of imago; the survived females and males transmit infection to larvae. Surface sterilization of the ova doesn't prevent larvae infection, death rate among larvae attaining 7.8%.
Insights
Entomopathogenic densonucleasis virus spreads horizontally and vertically in Culicidae mosquitoes. This mosquito virus transmission leads to significant population decline and altered sex ratios in mosquito populations.
Area of Science:
- Virology
- Entomology
- Ecology
Context:
- Blood-sucking Culicidae mosquitoes are significant disease vectors.
- Understanding entomopathogenic virus transmission is crucial for vector control.
- Densonucleasis viruses are insect-specific pathogens.
Purpose:
- To investigate the transmission modes of entomopathogenic densonucleasis virus in Culicidae mosquitoes.
- To quantify the impact of densovirus infection on mosquito populations.
Summary:
- Horizontal transmission occurs via larval feeding on infected cadavers and environmental contamination.
- Vertical transmission affects sex ratios and infects subsequent larval generations.
- Larval infection rates reach 7.8% even after ova sterilization, with population mortality ranging from 25.9% to 70.8%.
Impact:
- Provides insights into the ecological dynamics of insect viruses.
- Informs potential biocontrol strategies utilizing densonucleasis viruses against mosquito vectors.
- Highlights the complex transmission pathways influencing vector population dynamics.