Rodents are one of the most common pests, representing a serious problem for humans, not only because of the multiple diseases they transmit (such as malaria, salmonella, cholera, typhoid, bubonic plague, among others), but also because of the economic damage they cause. From food contamination to the destruction of materials, the image of the affected establishment, etc.
Among the more than 3,000 species of existing rodents, only three are considered urban pests: Rattus Norvegicus, Rattus rattus and Mus musculus.
Rattus Norvegicus, known as the vole, is the largest and heaviest of the three species, having a rounded snout, small ears, a short, thick tail and a preference for moist places. He is also an excellent swimmer. Its gestation period is 21 to 23 days, having litters of 8 to 12 pups, which wean at 33 to 35 days and reach sexual maturity at 80 to 90 days. It lives from 18 to 24 months and produces 6 to 8 litters per life.
Rattus rattus, known as the black or roof rat, is smaller and more agile than rats and has a tapered snout, large ears, a long, thin tail and prefers higher less humid locations. It is black, dark brown or dark gray on the back and gray or white on the belly. It is an excellent climber, climbing any type of rough surface. Its gestation period is from 21 to 22 days and it has 6 to 10 pups, which wean at 25 to 30 days and reach sexual maturity at 60 to 62 days. It lives from 12 to 18 months and produces 6 to 8 litters.
Mus musculus, the smallest and lightest of the 3 species, has a sharp snout, large ears, large eyes and opts for the interior of buildings, for stoves, drawers, cabinets and small holes. It is gray on the back and gray or white on the belly. This swims very well, climbs easily, is extremely curious, needs little water and food for its daily sustenance and has a small range of action. Its gestation period is 18 to 19 days, it has 5 to 6 pups, which wean at 25 to 30 days and reach sexual maturity at 40 to 42 days. It lives approximately 12 months and produces 6 to 8 litters.
All these species are omnivorous, eating any type of food.
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