Flies are small to medium sized, two winged insects and are usually in dull coloured. They are mechanical vectors of a number of food-bourne diseases. They are very active, moving busily from one attractant to another throughout most of the daylight hours.
Common species are:
2. Blue-bottle Fly
Out of these species, housefly is the most widely distributed insects as well as the one most frequently associated with man. It is commonly observced around human habitations and medically. All kinds of moist, warm, decaying organic material are suitable. Farbage, sewafe compost, animal carcasses and excrement, and manure are excellent breeding media.
Several factors, such as the availability of food, water and temperature, influence the longevity of adult flies. Under favourable conditions, ault houseflies may live from 2 to 4 weeks. During hot weather, flies live no longer than 2 to 3 weeks. Longevity is prolonged during cool weather.
As their mouthparts are adapted to lapping and sucking up liquid or semi-liquid substances, solid food materials must first be liquefied with saliva and vomit. While feeding, they also secrete dark faecal spots and exude light, straw-coloured fluids called vomit spots. These filthy habits cause food contamination which often leads to food poisoning.
1. Chemical Control
2. Insect Killer