Rattus

Thesaurus

Noun

Rattus - common house rats; upper incisors have a beveled edgegenus Rattusmammal genus - a genus of mammalsfamily Muridae, Muridae - originally Old World rats now distributed worldwide; distinguished from the Cricetidae by typically lacking cheek pouchesbrown rat, Norway rat, Rattus norvegicus - common domestic rat; serious pest worldwideblack rat, Rattus rattus, roof rat - common household pest originally from Asia that has spread worldwide

Rattus

enUK

Rattus

a genus of rodents of the family Muridae.

The body length of the rat ranges from 10 to 30 cm. The tail is slightly longer or shorter than the body and covered with scales and sparse hair. The snout is pointed; the ears, large and leathery. About 60 species of Rattus are known, distributed originally in the forests of the tropics and subtropics (Africa, southern Asia). As early as the Paleolithic, certain synanthropic species began to spread northward, following man, and gradually settling very widely (including America).

There are three species of rats in the USSR. The black rat (R. rattus), a synanthrope, is found in the European part of the USSR and in the Far East. The brown rat (R. norvegicus), also a synanthrope, is found in Siberia. The Turkestan rat (R. turke-stanicus) lives in the wild in the mountain forests of Kirghizia, Uzbekistan, and Tadzhikistan. The first two species also live under natural conditions in the southern parts of their areas of distribution, in burrows and tree hollows.

Rats reproduce every three or four months, bearing five to 15 young; these become sexually mature at the age of three or four months. Rats are omnivorous. They cause great damage by spoiling and eating food products and certain materials (for example, leather) and damaging living and working premises. They are carriers of helminthic and many infectious diseases. They are controlled by mechanical, chemical, and biological methods. The skins can serve as a raw material for second-grade leather and fur.

REFERENCES

Argiropulo, A. I. Semeistvo Muridae—myshi. Moscow-Leningrad, 1940. (Fauna SSSR: Mlekopitaiushchie, vol. 3, issue 5.)
Ellerman, J. R. The Families and Genera of Living Rodents, vol. 3, part 1. London, 1949.

I. M. GROMOV

Rattus

(rat'ŭs), The rats, a genus of rodents, family Muridae. Rattus rattus, the black r., is the species most commonly responsible for transmitting plague to humans by means of the flea, Xenopsylla cheopis; it is smaller and darker than the Norwegian, sewer, or brown rat (Rattus norvegicus) and has longer ears and tail. See: rat.

Rattus

Rattus

Rattus

REFERENCES

Rattus

Rattus

Rattus

Synonyms for Rattus

noun common house rats

Synonyms

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