Rattus


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Rattus: Rattus rattus

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

References in periodicals archive ?
No cross-reaction occurred with human or Rattus species undiluted extracts from blood or kidney tissue, respectively.
An unusual morphological type of Trypanosoma (Herpetosoma) lewisi detected in the blood of Rattus norvegicus in India.
Finding of Parastrongylus cantonensis (Chen, 1935) in Rattus rattus in Tenerife, Canary Islands (Spain).
Meanwhile, the qualitative data variables comprised of the Nurs group, particularly 1 = Mus reared, 2 = Peromyscus reared and 3 = Rattus reared with a sample size (N) 36 observations.
Field and laboratory observations on roof rats, Rattus rattus (Linnaeus), in Florida.
7%) * Proportion of persons who were seronegative and turned seropositive each year; **Proportion of persons seropositive and turned seronegative each year Table IV Rodents showing evidence of leptospiral infection Number Number showing Rodent species studied seropositivity Serogroups Bandicoota 9 4 Autumnalis--2 indica Djasiman--1 Pomona--1 Rattus rattus 39 2 Javanica--2 Suncus murinus 5 Nil -- Neokia indica 1 Nil -- Total 54 6 6 Presence of leptospires in urine Direct Culture % darkfield Rodent species positivity microscopy Bandicoota 44.
SEQUENCE CONSERVATION OF MULTIPLE SRY COPIES IN RATTUS NORVEGICUS.
The species of rat that lives beneath New York City like a gang of quadrupedal straphangers is the Norwegian rat, or Rattus norvegicus.
All rat kings studied consisted of the black rat, Rattus rattus L.
RATTUS Norvegicus, the common rat, grows up to 8in (20cm) and has a scaly 4in (10cm) tail.