We live outside and have a lot of flies during certain periods. The strange thing is that sometimes we beat them all to death and within 10 minutes we count 50 in the house while not a single door or window has been opened. Where do those flies come from? They can’t breed so quickly in crevices and holes, can they?
Answer
The cycle of flies depends on the temperature: the higher the temperature, the faster the development. But this is not a matter of minutes, but rather of days or weeks, depending on the species.
There are different types of flies that you can notice in the house. The main types are:
– the housefly and the housefly; these breed mainly in manure. Some less hygienic farms (mainly chicken and pig farms) sometimes have difficulties in controlling the population of these flies and they can spread into the environment.
– flesh flies (shiny green or blue flies) breed in carcasses, meat waste and some species even in wounds.
– autumn flies (the black flies that you mainly find in the summer around the eyes of the large pets) as adults mainly overwinter in the attics of houses. Every year in late autumn they come en masse into the same houses to hibernate there. These flies, which survive the winter, leave the house again in the spring.
Answered by
Dr. Reginald De Deken
entomology and tropical veterinary medicine
Nationalestraat 155 2000 Antwerp
http://www.itg.be/
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