City of Bayswater mosquito control officers found large numbers of larvae during surveys carried out at known breeding areas near the river.
Officer Don Sorensen said there had been comparable weather conditions and tides to previous seasons, with breeding conditions mainly affected by temperature and tidal levels.
‘However the City’s mosquito control unit has undertaken additional monitoring, baiting and trapping this season to control the mosquito numbers,’ he said.
‘The City’s mosquito control officers monitor and treat mosquito breeding sites up to five times per week during the breeding season.
‘Officers have been proactively treating breeding sites with larvicide that prevents mosquito larvae from developing into adult mosquitoes.
‘The City’s mosquito control measures include larvae sampling, trapping, baiting and runnelling.’
The City suggested residents living in riverside suburbs should avoid mosquito-affected areas in the early morning and evening, wear long loose-fitting protective clothing, and apply effective mosquito repellent.