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What are the pests? - 28.03.2015

German Cockroach ( Blatella Germenica ) :

The German cockroach, Blattella germanica, is the most common indoor species, especially in multiple-family dwellings. They prefer food preparation areas, kitchens, and bathrooms because they favor warm (70° to 75°F), humid areas that are close to food and water. Severe infestations may spread to other parts of buildings. This species reproduces the fastest of the common pest cockroaches: a single female and her offspring can produce over 30,000 individuals in a year, but many succumb to cannibalism and other population pressures. Egg laying occurs more frequently during warm weather. The female carries around a light tan egg case (about 1/4 inch long) until 1 to 2 days before it hatches, when she drops it. Sometimes the egg case hatches while it is still being carried by the female. Each egg case contains about 30 young, and a female may produce a new egg case every few weeks.

American Cockroach ( Periplanata Americana ) :

The American cockroach, Periplaneta americana, prefers warm and humid environments, usually with temperatures in excess of 82°F. Under the right conditions, they readily live outdoors and are common pests in zoos and animal-rearing facilities. They are also common in sewers, steam tunnels, and masonry storm drains. Occasionally they forage from sewers and other areas into the ground floor of buildings. Adult females carry the egg cases around for about 6 days and then cement them to a protected surface where they incubate for about 2 months or longer. The egg cases, which are about 3/8 inch long, are brown when laid but turn black in 1 to 2 days. Each egg capsule contains about 12 young; a female and her offspring can produce over 800 cockroaches in one year.

Oriental Cockroach ( Blatella Orientalis ):

The oriental cockroach, Blatta orientalis, is sometimes referred to as a water bug or black beetle. It lives in dark, damp places like indoor and outdoor drains, water control boxes, woodpiles, basements, garages, trash cans, and damp areas under houses. It is most likely to occur in single-family dwellings that are surrounded by vegetation. It is also common in ivy, ground cover, and outside locations where people feed pets. Oriental roaches prefer cooler temperatures than the other species do, and populations of this species often build to large numbers in masonry enclosures such as water meter boxes. At night, oriental cockroaches may migrate into buildings in search of food. They usually remain on the ground floor of buildings and move more slowly than the other species. Oriental cockroaches do not fly and are unable to climb smooth vertical surfaces; consequently they are commonly found trapped in porcelain sinks or tubs. Females deposit dark red-brown egg cases, which are about 3/8 inch long, in debris or food located in sheltered places. Each female and her offspring can produce nearly 200 cockroaches in one year. Development from a newly emerged nymph to adult can take from 1 to 2 years or more.

Mouses :

House Mouse: The house mouse (Mus musculus) is one of the most widely distributed and successful mammals in the world (2). It has dull greyish-brown fur and the tail, which is the same length as the body, is thicker and scalier than that of other species of mice (3). It is accompanied by a distinctive strong ‘stale’ odour and its presence can easily be detected by means of its droppings (2). Forms of this species living in association with man (‘commensal’ forms) tend to be larger and darker than ‘wild’ forms, and have longer
 tails (3). The voice is a familiar high-pitched ‘squeak’ ...

Norway Rats:

Norway rats are large rodents that may weigh in excess of 500 grams. They can reach lengths of 40 cm,and their tails alone may measure 21 cm. The body of the Norway rat is covered in shaggy fur that is brown or gray in color. The ears and tail are covered in scales, and the tail is shorter than the head and body. Droppings are capsule-shaped.


The house fly, Musca domestica Linnaeus, is a well-known cosmopolitan pest of both farm and home. This species is always found in association with humans or the activities of humans. It is the most common species found on hog and poultry farms, horse stables and ranches. Not only are house flies a nuisance, but they can also transport disease-causing organisms. Excessive fly populations are not only an irritant to farm workers but, when there are nearby human habitations, a public health problem could occur.


Mosquitoes are small, midge-like flies which compose the family Culicidae. Although a few species are harmless or even useful to humanity, the females of most species are ectoparasites, whose tube-like mouthparts (called a proboscis) pierce the hosts' skin to suck the blood. The word "mosquito" (formed by mosca and diminutive ito) is Spanish for "little fly".[2] Thousands of species feed on the blood of various kinds of hosts, mainly vertebrates, including mammals, birds, reptiles, amphibians, and even some kinds of fish. Some mosquitoes also attack invertebrates, mainly arthropods. Though the loss of blood is seldom of any importance to the victim, the saliva of the mosquito often causes an irritating rash that is a serious nuisance. Much more serious though, are the roles of many species of mosquitoes asvectors of diseases. In passing from host to host, some transmit extremely harmful infections such as malaria, yellow fever, west nile virus,dengue fever, and filariasis.


Ticks are small arachnids in the order Parasitiformes.[1][2][3] Along with mites, they constitute the subclass Acarina. Ticks are ectoparasites(external parasites), living by hematophagy on the blood of mammals, birds, and sometimes reptiles and amphibians. Ticks are vectors of a number of diseases that affect both humans and other animals.
Despite their poor reputation among human communities, ticks may play an ecological role by ailing infirm animals and preventing overgrazing of plant resources.

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