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How long do flies live?

Published in Insect Lifespan 2 mins read

The lifespan of a housefly is generally 15 to 30 days, depending on environmental conditions.

Factors Affecting Fly Lifespan

Several factors can influence how long a fly lives:

  • Temperature: Warmer temperatures accelerate development, causing flies to mature faster and, according to the reference, potentially live longer compared to flies in colder conditions.
  • Living Conditions: Flies in comfortable, stable environments, such as warm homes and laboratories, have been observed to thrive and live longer than those in the wild, who face harsh elements, food scarcity, and predation.

Life Cycle and Rapid Reproduction

The housefly’s short life cycle enables them to reproduce quickly. This rapid breeding makes fly control essential if they are to be prevented from becoming an infestation.

Stage Duration
Egg ~1 day
Larva 3-5 days
Pupa ~5 days
Adult Fly 15 to 30 days

Practical Insights

  • Because flies have such a short lifespan, their populations can rapidly increase when conditions are favorable, such as warm weather and access to food.
  • The fact that flies develop faster and live longer in stable, warm conditions means it is more likely to find them in our houses than in the outside environment, especially in cooler climates.
  • Understanding the fly's lifecycle helps in devising effective control methods targeting specific life stages to manage populations.

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