Redland Coast has unique coastal and freshwater environments that provide ideal breeding conditions for mosquitoes. While a nuisance, some mosquito species also transmit diseases such as Ross River or Barmah Forest viruses to the community. For this reason, Council’s Mosquito Management Program targets the mosquitoes that are capable of transmitting these diseases.
Council's role in mosquito management
Redland City Council is committed to delivering a year round, best practice mosquito management program that is safe for the environment and for residents, to manage mosquito numbers in the Redlands.
Council conducts regular ground and aerial treatments for mosquitoes. These treatments target the newly hatched larvae (wrigglers) of mosquitoes before they can fly, as this is the most effective form of treatment. The diagram shows the optimal time to treat mosquitoes:
Councils Mosquito Management Program involves regular monitoring of known mosquito breeding sites across the Redlands, including coastal and wetland habitats. Treatments are conducted at these sites if breeding is identified, with additional surveys and treatments conducted in response to tidal inundation or rainfall events.
As part of Council’s surveillance program regular light trapping for adult mosquitoes is also undertaken throughout the Redlands. This allows Council to monitor adult mosquito numbers and determine the type of mosquito species impacting certain areas, so treatments can be targeted accordingly.
Council's Pest Management Team will continue to monitor mosquito breeding sites over the winter season and treat these areas as needed. Treatments will be predominately by ground application given the low numbers anticipated, however the chemicals used will remain the same.
Under Council's Marine Park Permit, two chemicals are used for mosquito treatments. These are (S)-Methoprene, an insect growth regulator and Bacillus Thuringiensis subspecies Israelensis (Bti), a bacterial agent that kills mosquito larvae when ingested. These chemicals are safe to use, environmentally friendly and only target mosquito larvae.
Current mosquito treatments
- Aerial Treatments: 28 November 2019: Redland Bay, Thornlands, Birkdale, Russell Island, Garden Island.
- Aerial Treatments: 19 November 2019: Redland Bay, Victoria Point, Thornlands, Wellington Point, Birkdale, Russell Island, Pannikin Island, Lagoon Island, Garden Island and Long Island.
- Aerial Treatments: 16 October 2019: Redland Bay, Victoria Point, Thornlands, Russell Island, Pannikin Island, Lagoon Island, Garden Island and Long Island.
- Aerial Treatments: 2 October 2019: Redland Bay, Russell Island, Lagoon Island and Garden Island.
- Aerial Treatments: 3 September 2019: Redland Bay, Victoria Point, Thornlands, Wellington Point, Birkdale, NSI, Russell Island, Pannikin Island, Lagoon Island, Garden Island and Long Island.
- Aerial Treatments: 9 August 2019: Redland Bay, Victoria Point, Thornlands, Wellington Point, Birkdale, Russell Island, Pannikin Island, Lagoon Island, and Garden Island.
Ground treatments are conducted in addition to aerial treatments, over the entire Redland City. Ground Treatments are conducted in areas that have limited access or heavy vegetation cover and are not able to be treated via helicopter, such as Wellington Point. Other ground treatment sites include Redland City freshwater and inland suburbs such as Mount Cotton. Fresh water sites are surveyed and treated as needed with registered products which are safe to use and only target mosquito larvae.
Past mosquito treatments
While Council undertakes a year round Mosquito Management Program, during peak mosquito breeding season (November to April) additional personal protective measures should be taken.
You can protect yourself from mosquitoes by covering up, wearing light-colored, long, loose-fitting clothing and using insect repellent. If regular insect repellent is not preferred, natural alternatives may be available depending on your local pharmacy or convenience store.
If mosquitoes are a problem in your area:
- avoid going outdoors during dawn and dusk unless covering up and using insect repellent
- maintain fly screens on windows and doors in your home
- Treat fly screens with a UV stable insecticide
- use mosquito coils or plug-in insecticide burners
- ensure yards are clean and tidy, remove excessive vegetation and regularly empty pooled water from pot plant bases, containers and tarps
- Contact your local pest technician for advice on barrier treatments and whether these are suitable for your home.
Reduce mosquito breeding
While treatments are effective, it's impossible to find or treat all breeding locations as mosquitoes are capable of breeding in small pools of water such as bird baths and pot plant bases.
To reduce mosquitoes on and around your property, empty out unnecessary water where mosquitoes might breed and ensure rainwater tank screens are in good condition. Common breeding areas can include: fallen palm fronds, boats, unchlorinated swimming pools, bird baths, tarps and old tyres.
Projects & Research
Council is an active member of the Mosquito Arbovirus Research Committee (MARC). The committee is made up of Council’s across South East Queensland, Queensland Health and QIMR Berghofer. MARC also has a dedicated scientist that works with local Council’s on mosquito research and latest technologies, to better improve mosquito treatments, surveillance and arising mosquito issues of the future.
The Queensland Government’s Metro South Health Unit has recently introduced the Zika Mozzie Seeker project. The mosquito monitoring project involves community participation in setting up backyard mosquito egg traps to collect mosquito eggs for DNA testing. For further information on the Zika Mozzie Seeker project or to register your interest please view the Metro South Health Zika Mozzie Seeker webpage.
For more information on mosquitoes, latest technologies and control programs across southeast Queensland, visit the Queensland Institute of Medical Research Berghofer website or see our mosquitoes fact sheet [PDF. 0.7MB].