Biology:Caatinga vesper mouse
| Caatinga vesper mouse | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Subfamily: | Sigmodontinae |
| Genus: | Calomys |
| Species: | C. expulsus
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| Binomial name | |
| Calomys expulsus (Lund, 1841)
| |
The caatinga vesper mouse (Calomys expulsus) (also known as the caatinga laucha[2] or rejected vesper mouse[1]) is a rodent species in the family Cricetidae from South America.[2] It is endemic to eastern Brazil , where it is found in open savanna (cerrado) and thorny scrub (caatinga) habitats.[1] Its karyotype has 2n = 66 and FN = 68. It was formerly synonymized with C. callosus, but the latter has 2n = 50 and FN = 66.[2] Karyologic analysis of C. expulsus has shown that the X chromosome is large and submetacentric while the Y chromosome is either acrocentric or submetacentric.[3] Predators include the barn owl .[4] Sexual dimorphism in shape and size occurs; the former is present mainly before the age of 20 days. Males are smaller before age 50 days and larger thereafter, which becomes less prominent after 200 days.[5]
References
- ↑ 1.0 1.1 1.2 Bonvicino, C.R.; Geise, L. (2016). "Calomys expulsus". IUCN Red List of Threatened Species 2016: e.T136689A115211375. https://www.iucnredlist.org/species/136689/115211375. Retrieved 24 December 2019.
- ↑ 2.0 2.1 2.2 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. 1107. ISBN 978-0-8018-8221-0. OCLC 62265494. http://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?id=13000617.
- ↑ Pereira, L. G.; Geise, L. (August 2007). "Karyotype composition of some rodents and marsupials from Chapada Diamantina (Bahia, Brasil)" (in en). Brazilian Journal of Biology 67 (3): 509–518. doi:10.1590/S1519-69842007000300016. ISSN 1519-6984. PMID 18094834.
- ↑ Magrini, L.; Facure, K. G. (November 2008). "Barn owl (Tyto alba) predation on small mammals and its role in the control of hantavirus natural reservoirs in a periurban area in southeastern Brazil". Brazilian Journal of Biology 68 (4): 733–740. doi:10.1590/s1519-69842008000400007. PMID 19197490.
- ↑ Hingst-Zaher, Erika; Marcus, Leslie; Cerqueira, R. (2000-06-25). "Application of geometric morphometrics to the study of postnatal size and shape changes in the skull of Calomys expulsus" (in english). Hystrix: The Italian Journal of Mammalogy 11 (1). doi:10.4404/hystrix-11.1-4139. ISSN 0394-1914.
Wikidata ☰ Q1768782 entry
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