Waterhouse's swamp rat

Waterhouse's swamp rat
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Cricetidae
Subfamily:	Sigmodontinae
Genus:	Scapteromys
Species:	S. tumidus
Binomial name
Scapteromys tumidus (Waterhouse, 1837)

Waterhouse's swamp rat (Scapteromys tumidus) is a semiaquatic rodent species from South America.^[2] It is found in southern Brazil, Uruguay and northern Argentina, where it lives in freshwater and salt marshes, as well as open grassland of the pampas.^[1] Its karyotype has 2n = 24, substantially lower than its closest relative S. aquaticus with 2n = 32.^[3]

References

1. Queirolo, D.; Christoff, A.; D'Elia, G.; Pardinas, U. (2017) [amended version of 2016 assessment]. "Scapteromys tumidus". IUCN Red List of Threatened Species. 2017: e.T19945A121711379. Retrieved 28 June 2020.
2. Musser, G. G.; Carleton, M. D. (2005). "Scapteromys tumidus". In Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 1172. ISBN 978-0-8018-8221-0. OCLC 62265494.
3. Musser, G. G.; Carleton, M. D. (2005). "Scapteromys aquaticus". In Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 1172. ISBN 978-0-8018-8221-0. OCLC 62265494.