Rattus


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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 ?
tetraptera (Figuras 4B, 5 y 6, respectivamente) son parasitos tipicos del genero Rattus.
La presencia de Hymenolepis diminuta en Rattus norvegicus ha sido reportada en diversos estudios desarrollados en Lima.
The aim of this paper is to show how the scientific rescarch project "Detection of explosives using Rattus norvegicus rodents, Wistar strain" has been successful in part because a large awareness campaign in mass media, parallel to its development.
Finding of Parastrongylus cantonensis (Chen, 1935) in Rattus rattus in Tenerife, Canary Islands (Spain).
Estudios previos realizados en el continente americano han senalado la importancia de estos reservorios, predominantemente Rattus norvegicus, en la transmision de la leptospirosis urbana con registros de seroprevalencia de 77,4 % para la ciudad de Detroit (7), 27 % para Barbados (8), 36,1 % para Rio de Janeiro (9) y 45,8 % para la ciudad de Buenos Aires (10).
Now the fans have heard my interpretation of Rattus, they're demanding to hear the other Stranglers epics 'a la Hugh'.
Las secuencias proteicas de las subunidades de los receptores ionotropicos tipo AMPA (GLUR 1, GLUR 2, GLUR 3 y GLUR 4), NMDA (NR 1, NR2A, NR2B, NR2C, NR2D, NR3A y NR3B) y Kainato (GLUR 5, GLUR 6, GLUR 7, KA 1 y KA 2) en las especies Homo sapiens, Pan troglodytes, Pongo pygmaeus, Macaca mulata y Rattus norvegicus se obtuvieron de las bases de datos NCBI (http://www.
Metodologia y resultados: se capturaron 354 roedores en los municipios de Apartado, Turbo y Necocli, que fueron clasificados como Rattus rattus, Rattus norvegicus, Mus musculus, Zygodontomys cherrei, Proechimys semiespinosus y Heteromys anomalus.
Ten days after weaning, each subject was tested in an apparatus that allowed it to enter tunnels scented with clean pine shavings or with shavings bearing the scent of Mus, Peromyscus, or Rattus.