Home | Welcome | News | Tourism | EconDev | Search

Public Works - Mosquito Control 

City of Portsmouth Logo Scenes of Portsmouth

Threat Condition
Threat Condition

Navigation Background Public Works Homepage | The Buzz Homepage

 

 

 

THE BUZZ

Volume 5, 25   (Week 39)

September 28, 2006

 
Mosquito Activity (Scale from 0 to 5)
  • The city received an average of 1.24 inches of rain last week.
  • The mosquito activity has in to a 3. The mosquito activity increased because of a horse testing positive for West Nile Virus in Suffolk and the increase in adult mosquito populations caused by tropical storm Ernesto.
Surveillance
  • 9 CDC style light traps were set this week, a total of 1,585 mosquitoes were caught, for an average of 176 per trap. Trap counts dropped by 42% from last week.
  • 7 Gravid style traps were set this week, a total of 254 mosquitoes were caught, for an average of 36 per trap. Gravid trap counts were up from last week.
  • Larval surveillance from last week’s treatments showed much success in areas that were treated early last week. Crews are continuing to monitor all standing water for larvae.
Service Requests
  • We received 5 complaint calls this week. Complaints were far less than last week.
Control Efforts
  • As of last night, we have completed two full rounds of truck fogging the entire city. Crews truck fogged 8,636 acres this week alone.
  • Crews continue to work hard monitoring and treating any standing water in roadside ditches and catch basins.
  • Truck fogging will resume as trap counts and conditions permit.
Aerial Mosquito Control Efforts
  • On Monday September 25, the city’s licensed aerial contractor used a helicopter to treat approximately 100 acres of mosquito breeding habitat. This should provide some residual effect helping to keep mosquito numbers down for a few weeks.
  • The U.S. Air Force Aerial Spray Team also aided the northern part of the city last night on Wednesday September 27. The Aerial Spray Team treated approximately 6000 acres of city and federal properties for adult mosquitoes.
  • This combination of adulticiding to remove adult mosquitoes and larvaciding to prevent more adult mosquitoes should help to continue reducing mosquito numbers throughout the city.

Aerial Spraying  Aerial Spraying
 

Mosquito Trap Counts

 
City of Portsmouth, Virginia - All rights reserved.

last updated September, 2006