First Nationwide Monitoring Program for the Detection of Potentially Invasive Mosquito Species in Austria

Area of Science:

• Environmental science
• Entomology
• Invasive species research

Background:

• Fragmented data exists on alien and invasive mosquito species in Austria.
• A nationwide overview is needed to assess current distribution and risks.

Purpose of the Study:

• To provide a nationwide overview of alien and potentially invasive mosquito species in Austria.
• To establish a baseline for future monitoring of mosquito distribution changes.

Main Methods:

• Utilized a uniform nationwide protocol for egg sampling using ovitraps at 45 locations.
• Conducted weekly sampling from May to October 2020.
• Identified mosquito species through genetic analysis of sampled eggs.

Main Results:

• The Asian tiger mosquito (Aedes albopictus) was detected in Tyrol and for the first time in Lower Austria.
• The Asian bush mosquito (Aedes japonicus) was found to be widespread across all Austrian provinces.
• Aedes japonicus was the most abundant species, with higher prevalence in southern regions, artificial habitats, warmer temperatures, and lower wind speeds.

Conclusions:

• This study provides crucial data on the distribution of Aedes albopictus and Aedes japonicus in Austria.
• Findings contribute to a better risk assessment for mosquito-borne diseases in the region.
• Results serve as a vital baseline for tracking future shifts in invasive mosquito populations.