Toltec cotton rat

  (Redirected from Sigmodon toltecus)

The Toltec cotton rat (Sigmodon toltecus) is a rodent species in the family Cricetidae.[2] It is found in eastern Mexico from the Rio Grande to the Yucatán Peninsula, as well as in Belize and northern Guatemala.[1] It prefers moist grassland habitat.[1] While long thought to be a subspecies of S. hispidus, recent taxonomic revisions, based on mitochondrial DNA sequence data, have split the extensive former species range into three separate species. Carroll et al. (2004) indicate that the southern edge of the S. hispidus distribution is likely near the Rio Grande where it meets the northern distribution of S. toltecus (formerly S. h. toltecus). The range of S. toltecus extends from northern Mexico south into Chiapas where it occurs in sympatry with S. hirsutus (formerly S. h. hirsutus). Rats from this species group have been used as laboratory animals.[3]

Toltec cotton rat
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Cricetidae
Subfamily: Sigmodontinae
Genus: Sigmodon
S. toltecus
Binomial name
Sigmodon toltecus
Saussure, 1860


  1. ^ a b c Cassola, F. (2016). "Sigmodon toltecus". IUCN Red List of Threatened Species. IUCN. 2016 (errata version published in 2017): e.T136559A115209897. Retrieved 24 December 2019.CS1 maint: uses authors parameter (link)
  2. ^ Musser, G.G.; Carleton, M.D. (2005). "Superfamily Muroidea". 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. 1177. ISBN 978-0-8018-8221-0. OCLC 62265494.
  3. ^ Mittal, S. K.; Middleton, D. M.; Tikoo, S. K.; Prevec, L.; Graham, F. L.; Babiuk, L. A. (Jan 1996). "Pathology and immunogenicity in the cotton rat (Sigmodon hispidus) model after infection with a bovine adenovirus type 3 recombinant virus expressing the firefly luciferase gene". J. Gen. Virol. 77 (1): 1–9. doi:10.1099/0022-1317-77-1-1. PMID 8558115. Retrieved 2011-03-01.
  • Infonatura
  • Carroll, D. S., L. L. Peppers, and R. D. Bradley. 2004. Molecular systematics and phylogeography of the Sigmodon hispidus species group. pp. 85–98, in Contribuciones Mastozoologicas en Homenaje a Bernardo Villa (Sanchez-Cordero V. y R. A. Medellin Eds.) Instituto de Biologia e Instituto de Ecologia, UNAM, Mexico.