Lifecycle of Aedes mosquitos

Friday, 30/09/2016

This mosquito, also known as yellow fever mosquito, transmits diseases like Chikungunya, Dengue, and other. It feeds on humans almost exclusively. Living in and around people’s homes, this mosquito will breed in anything that holds still water including flowerpots, birdbaths, water coolers, empty glasses etc. Finding and treating all the breeding sites of this mosquito is very hard. So, it is very important to have a check for the larvae of this mosquito.

Dengue- Symptoms

It is an illness caused by a virus that is spread through the Aedes mosquito bites. Symptoms include a headache, rashes, fever, vomiting, and pain in the joints,eyes, and muscles. When you are bitten by an infected Aedes mosquito, symptoms may take up to Two weeks to develop but usually end in a week.

How long does Aedes aegypti live?

The adult lifespan of the Aedes aegypti mosquito can range from about two weeks to approximately a month, depending on the surroundings and environmental conditions. An average mosquito can and will disperse relatively short distances and travel no more than 500 metres in its whole life period.

Here is how it breeds-

Eggs

• Adult, Female Aedes mosquitoes, lay their eggs on the inner walls of water containing container, just above the waterline ( as the picture).

glassjar

• About 100 eggs are produced each time they lay eggs.

• Eggs are ready to hatch from a few days to several months after being laid.

• They hatch when are submerged in water.

• Eggs are hard and sticky. They almost stick to the walls like glue and have the capacity to stay there till months, eight months, for a rough idea.

• Even very less amount of water will be sufficient for Aedes Mosquitos, So, Beware because, bowls, cups, fountains, coolers, barrels, tires, vases and any other container storing water makes for a great “nursery.”

Larvae

larva

Larvae are aquatic beings and emerge from the eggs. Especially, when the water level rises to cover the eggs.( What this means is if you are adding furthermore water to containers with eggs, you are triggering the larvae to emerge from the eggs). Water can be dangerous!!

• Microorganisms, present in water, come out as a great food for the larvae, to feed upon.

• The Larva becomes a Pupa, after molting three times in just Five days.

Pupae

pupae

• Pupae develop into adult flying mosquitoes (shown below) in just 2-3 days.

Adults

adult

Here is a picture of an Adult Aedes mosquito zoomed. This is how a Pupa will turn to look like after two to three days. It is identifiable because of the black and white lines or marks on their bodies.

The Lifecycle in a jar

jar

This is how the Eggs, Larvae, Pupae, and Adults will look like under a study conducted in a jar.

Did you know?

• Under some conditions, the egg of an Aedes mosquito can hatch into a larva in less than one day. After three days, the mosquito has bitten a person and taken in blood, it will lay eggs, and the lifecycle will begin again.

• The Aedes Mosquitos bites, Only the female one (not the male mosquitoes) bites, as it needs the protein in Human blood to develop its eggs.

• The mosquito becomes infective after approx seven days, it has bitten a person carrying the virus. This is the incubation period, during which, the virus replicates itself inside the mosquito and reaches to the salivary glands.

• Peak biting takes place at dawn and the dusk.

• Asian Tiger Mosquito or Aedes mosquito (which transmits Zika Virus) – Aedes mosquitoes are visually distinct and can be identified because they have black and white markings (which are a great sign so as to identify them) on their bodies and legs. They are active during the day (dusks and dawns are not to be forgotten) in shaded areas. This species is a vector.

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