Fleas’ Life Cycle

A fleas life cycle from egg to adult can take anywhere from 2 weeks to 9 months depending on conditions such as temperature, humidity and food.

Only 5% of the population of a flea infestation are adults. The rest are at one of the other ‘immature’ stages. These consist approximately of 50% eggs, 35% larvae, and 10% pupae.
 

The process:

 

Egg

After a blood meal, the female will lay about 15-20 eggs in one day. That equates to as many as 600 in a lifetime.

Eggs that are laid on a pet or ‘the host’ rarely remain there and can drop off on carpets and soft furnishings.  Eggs will hatch in 2 – 14 days  in floor level cracks and crevices, along skirting and in soft furnishings including beds.


Larva

Larvae survive by eating digested blood from adult flea faeces and organic debris such as dead skin and hair.  They are blind and avoid light taking anywhere from a week to several months to develop. A silken cocoon is woven ready for the pupae stage.


Pupa

As long as they’re cocooned, fully-developed adult fleas can survive without food for several months. Adults emerge once movement from a potential host is noticed. This is why many properties left vacant for some time can suffer when new residents move in.

Otherwise, newly emerged adult fleas can only live about 1 week without a blood feast.

Pupa take about 5-14 days to develop into adult fleas.

 

Adult

Adult fleas may live from 2 months to 1 year without feeding, but newly emerged adult fleas only live about 1 week if a blood meal is not obtained.

Keep in mind that adults do not necessarily emerge all at once.  Once we have carried out the first treatment, be prepared for a second hatching within about 7-14 days

 
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