Spix's yellow-toothed cavy: Difference between revisions
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==References== |
==References== |
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*[http://www.natureserve.org/infonatura/ Infonatura] |
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*(Portuguese) [http://globorural.globo.com/barra.asp?d=/edic/168/fichabicho1.htm Globo Rural] |
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Revision as of 16:42, 18 December 2013
| Spix's yellow-toothed cavy | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Caviidae |
| Genus: | Galea |
| Species: | G. spixii
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| Binomial name | |
| Galea spixii Wagler et al., 1831
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Spix's yellow-toothed cavy, Galea spixii, is a rodent, a cavy species from South America.[2] It is found in Bolivia east of the Andes and much of south central to northeastern Brazil.[1] The species is found in open savanna and semiarid habitats, such as the Cerrado and Caatinga of Brazil.[1] Its karyotype is 2n = 64 and FN = 118.[2]
Galea spixii and G. musteloides are similar and may actually be the same species. G. spixii tolerates a wide range of environmental changes, though they need open habitats. It is the most stable species within the Galea group because it is extremely abundant throughout its range. [3]
Gestation is about fifty days. Litters size ranges from one to five, with an average of three. They have hair and open eyes at birth.[4] Maturation of the two sexes takes differently long: female G. spixii have an open vagina when they are approximately eighty-day-old while the testicular descent is completed in male G. spixii at around one hundred thirty-five days old. Males and females in this species are aggressive to each other. Paternal care is rarely remarkable. When females go into estrus aggressiveness increases. On the other hand, when male approaches females in order to mate, it competes aggressively with other males. [5]
References
- ^ a b c Template:IUCN2008
- ^ a b 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. 1554. ISBN 978-0-8018-8221-0. OCLC 62265494.
- ^ Catzeflis, F., Patton J., Percequillo, A., Bonvicino, C. & Weksler, M. 2008. Galea spixii. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. <www.iucnredlist.org>. Downloaded on 08 October 2013.
- ^ Eisenberg, J. F., & Redford, K. H. (1999). Mammals of the Neotropics: The Central Neotropics (Ecuador, Peru, Bolivia, Brazil). Chicago: University of Chicago press.
- ^ ADRIAN, O., & SACHSER, N. (2011). Diversity of social and mating systems in cavies: a review.Journal Of Mammalogy, 92(1), 39-53. doi:10.1644/09-MAMM-S-405.1
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