Mosquito larvae

The treatment we use in our mosquito management program is aimed at reducing mosquito larvae before they emerge as adults and lay eggs.

This is the most effective and environmentally friendly way to manage mosquitoes.

Mosquitoes go through four distinct lifecycle stages in their development.


Egg - Larvae - Pupae - Adult

Adult mosquitoes lay eggs on the water’s surface and hatch into larvae, commonly called wrigglers - they look like little worms wriggling at the water’s surface.

Saltwater wrigglers larvae

Larvae need stagnant (or still) water to survive. They breathe at the surface of the water through a siphon and feed on plant materials in the water.

Larvae live in water for 7-14 days, depending on the water temperature. They turn into pupae for 1-2 days and then emerge as adult mosquitoes.

Mosquito monitors check larvae levels by entering the wetlands and dipping in known breeding sites.

Larvae dipping
One way we monitor mosquito larvae levels

Saltwater mosquito larvae
Heavy larval infestations in wetlands around Ocean Grove 





Page last updated: Monday, 22 June 2020

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