Pittier's crab-eating rat

Pittier's crab-eating rat (Ichthyomys pittieri) is a species of semiaquatic rodent in the family Cricetidae.[2] It is endemic to Venezuela. The natural habitats of this species are rivers and swamps. Its karyotype has 2n = 92 and FNa = 98. This was previously thought to be the highest chromosome number known for a mammal,[3] but it has since been found that the plains viscacha rat or red viscacha rat (Tympanoctomys barrerae) has 4x = 2n = 102.[4]

Pittier's crab-eating rat
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Cricetidae
Subfamily: Sigmodontinae
Genus: Ichthyomys
Species:
I. pittieri
Binomial name
Ichthyomys pittieri
Handley & Mondolfi, 1963

References

  1. Roach, N.; Naylor, L.; McCay, S. (2019). "Ichthyomys pittieri". IUCN Red List of Threatened Species. 2019: e.T10762A22384567. doi:10.2305/IUCN.UK.2019-2.RLTS.T10762A22384567.en. Retrieved 16 November 2021.
  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. 1120. ISBN 978-0-8018-8221-0. OCLC 62265494.
  3. Schmid, M.; Fernández-Badillo, A.; Feichtinger, W.; Steinlein, C.; Roman, J. I. (1988). "On the highest chromosome number in mammals". Cytogenetic and Genome Research. 49 (4): 305–8. doi:10.1159/000132683. PMID 3073914.
  4. Contreras LC, Torres-Mura JC, Spotorno AE (1990). "The largest known chromosome number for a mammal, in a South American desert rodent". Experientia. 46 (5): 506–508. doi:10.1007/BF01954248. PMID 2347403.


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