Pittier's crab-eating rat

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

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]

References

  1. ↑ Aguilera, M. & Ochoa, J. (2008). "Ichthyomys pittieri". The IUCN Red List of Threatened Species. IUCN. 2008: e.T10762A3214545. doi:10.2305/IUCN.UK.2008.RLTS.T10762A3214545.en. Retrieved 24 December 2017.
  2. ↑ Musser, G.G.; Carleton, M.D. (2005). "Superfamily Muroidea". In Wilson, D.E.; Reeder, D.M. 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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