Biology:Lesser Wilfred's mouse

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Short description: Species of rodent

Lesser Wilfred's mouse
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Cricetidae
Subfamily: Sigmodontinae
Genus: Juliomys
Species:
J. pictipes
Binomial name
Juliomys pictipes
Osgood, 1933
Synonyms

Thomasomys pictipes
Wilfredomys pictipes

The lesser Wilfred's mouse (Juliomys pictipes) is a species of South American rodents of the family Cricetidae.[2] It was first described by Wilfred H. Osgood under the name Thomasomys pictipes, then into the genus Wilfredomys, and now known as Juliomys pictipes.[3] The lesser Wilfred's mouse is endemic to northeastern Argentina and southeastern Brazil .[4] Its physical appearance ranges from dark brown to light orange coloration and the typical size is small to medium.[3] This species is arboreal, spending most of its time trees and living in the local forests at altitudes from sea level to 2000 m.[1] Currently, this species is listed as Least Concern by the IUCN, but, threats include livestock farming, ranching, and wood harvesting.[4]

Taxonomy

Juliomys pictipes was first discovered by Osgood in 1933.[5] It was originally named Thomasomys pictipes.[6][3] For several decades, the placement of this species was uncertain and fairly recently changed to Juliomys pictipes to fit under the subfamily of Sigmodontinae rodents.[2] Currently, there are three species under the genus of Juliomys. The taxon identifier is 89132.[7]

Description

This animal is considered to be small to medium sized Sigmodontinae rodents.[2] They are dark-brown to light-orange brown.[7] Other characteristics include having long soft fur with a brownish ochraceous dorsum.[8] This small-bodied animal is a pentalophodont with a tail longer than its head and body.[9] Juliomys pictipes have short, broad feet with 6 plantar pads.[3] In addition, the skull has identifying features including having a short rostrum and rounded braincase.[2] Another diagnostic characteristic is the presence of an open slit in the suture between the frontal bones. Lastly, its karyotype has 2n = 36, FN = 34.[8]

Distribution and habitat

It is found in northeastern Argentina and southeastern Brazil and limited to the tropical and subtropical moist forests of those countries.[9] The type locality was first discovered in Misiones, Argentina and occurs in the Atlantic forest.[10]

Ecology

The species is arboreal.[7] A baby of this species is often called a pinkie, kitten or pup.[7] The females are called doe and males are called buck.[7] Groups of this species are called a nest, colony, harvest, horde or mischief.[11]

Status

The Lesser wilfred's mouse is listed as Least Concern.[11] But, threats that increase mortality or decrease quality of life include livestock farming, ranching, and wood harvesting.[4]

References

  1. 1.0 1.1 Geise, L.; Pardinas, U. (2008). "Juliomys pictipes". IUCN Red List of Threatened Species 2008. https://www.iucnredlist.org/details/23078/0. Retrieved 23 March 2011. 
  2. 2.0 2.1 2.2 2.3 Pardiñas, Ulyses F. J.; Teta, Pablo; D’elía, Guillermo; Galliari, Carlos (2008-04-28). "Rediscovery of Juliomys pictipes (Rodentia: Cricetidae) in Argentina: emended diagnosis, geographic distribution, and insights on genetic structure" (in en). Zootaxa 1758 (1): 29–44. doi:10.11646/zootaxa.1758.1.2. ISSN 1175-5334. https://mapress.com/j/zt/article/view/zootaxa.1758.1.2. 
  3. 3.0 3.1 3.2 3.3 Beolens, Bo. (2009). The eponym dictionary of mammals. Watkins, Michael, 1940-, Grayson, Michael.. Baltimore: Johns Hopkins University Press. ISBN 9780801895333. OCLC 593239356. 
  4. 4.0 4.1 4.2 "The IUCN Red List of Threatened Species". https://www.iucnredlist.org/en. 
  5. Paresque, Roberta; Christoff, Alexandre Uarth; Fagundes, Valéria (2009). "Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil" (in en). Genetics and Molecular Biology 32 (2): 301–305. doi:10.1590/S1415-47572009005000031. ISSN 1415-4757. PMID 21637684. 
  6. de Oliveira, Joao A.; Bonvicino, Cibele R. (2002-09-01). "A new species of sigmodontine rodent from the Atlantic forest of eastern Brazil" (in en). Acta Theriologica 47 (3): 307–322. doi:10.1007/BF03194149. ISSN 2190-3743. 
  7. 7.0 7.1 7.2 7.3 7.4 "The IUCN Red List of Threatened Species". https://www.iucnredlist.org/en. 
  8. 8.0 8.1 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. 1121. ISBN 978-0-8018-8221-0. OCLC 62265494. http://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?id=13000677. 
  9. 9.0 9.1 Tomasi, Paulo S.; Valiati, Victor H.; Gonçalves, Juliana W.; Oliveira, Larissa R.; Vieira, Emerson M.; Christoff, Alexandre U. (2016-09-27). "A new species of Juliomys (Rodentia, Cricetidae, Sigmodontinae) from the Atlantic Forest of Southern Brazil" (in en). Journal of Mammalogy 97 (5): 1469–1482. doi:10.1093/jmammal/gyw082. ISSN 0022-2372. https://academic.oup.com/jmammal/article/97/5/1469/2218848. 
  10. "Wilfredomys pictipes (lesser Wilfred's mouse)". https://www.uniprot.org/taxonomy/89132. 
  11. 11.0 11.1 "Lesser Wilfred's mouse | Wilfredomys pictipes facts". https://thewebsiteofeverything.com/animals/mammals/Rodentia/Muridae/Wilfredomys/Wilfredomys-pictipes.html. 

Wikidata ☰ Q1766981 entry