Science Questions

How do mosquitoes lay their eggs?

Sun, 17th Jan 2010

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Outstanjing, via Twitter asked:

How do mosquitoes lay their eggs? We never see them doing so...


Mosquitoes depend on water for their life cycle.  Different mosquitoes live in different environments and as a result they depend on different types of water - stagnant water, big ponds of water, dumped car tyres with a bit of water and so on. You can actually tell which species of mosquito you're dealing with depending upon where they're laying eggs.

The bottom line is the mosquito goes down to the water once itís mated and different species of mosquito lay eggs in different ways.  But they all lay their eggs into water.

Certain species lay them as individual eggs which drift off; others lay big rafts of eggs. The eggs mature and hatch into little larvae, which then have an aquatic phase; they grow in the water and eat algae and things, growing into large mosquito larvae. These then mature into full blown mosquito flies that then take off and come and bite you. 

You just have to keep an eye on a patch of water and youíll see the mosquitoes coming down to lay their eggs!


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It is true they live their three phase of life in water and for survival they spend their adult life in air(land). Only female mosquito is reason for spreading disease  like malaria. Male mosquito don't involve in these things, but how they survive then. Their survival depend on what, let me know. mystyle, Thu, 28th Jan 2010

The female only drinks blood prior to and during egg laying.

At other times, both male and female feed on plant nectar. Don_1, Thu, 28th Jan 2010

I think you will find they drink sap rather than nectar. Bored chemist, Thu, 28th Jan 2010

Yes BC, they penetrate into the xylem and phloem with their proboscis to drink plant sap and also feed on decaying plant matter, but they do take nectar also. Don_1, Fri, 29th Jan 2010

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