Geocapromys

Geocapromys
Temporal range: Pleistocene to Recent
Mounted specimen of Geocapromys brownii
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Rodentia
Family:Capromyidae
Subfamily:Capromyinae
Tribe:Capromyini
Genus:Geocapromys
Chapman, 1901
Species

G. brownii
†G. columbianus
G. ingrahami
†G. megas
†G. pleistocenicus
†G. thoracatus

Geocapromys is a genus of rodent belonging to the hutia family[1] and distributed on the Bahamas and Jamaican islands.[2]

Systematics

The genus Geocapromys comprises six species, four of which are extinct.

  • Geocapromys ingrahami, the Bahamian hutia or Ingraham's hutia, is an extant species of hutia native to the Bahamas.
  • G. brownii, the Jamaican hutia, which is also known as the Jamaican coney or Brown's hutia, is another extant species endemic to Jamaica.
  • G. thoracatus, the Little Swan Island hutia, was a third species which was found only on Little Swan Island, off north-eastern Honduras. It became extinct in 1955, wiped out by storms and introduced predators. Some scientists consider it a subspecies of G. brownii.
  • G. columbianus, G. megas, and G. pleistocenicus are species known only from fossil remains.

Two undescribed species are known from the Cayman Islands a smaller one on Grand Cayman and a larger on Cayman Brac. They are most similar to the Cuban Geocapromys columbianus, but smaller. As with the Cayman Capromys, the earliest records are latest Pleistocene and the latest are post-Columbian.[3]

Phylogeny

Within Capromyidae, Geocapromys is the sister group to a clade comprising Mesocapromys and Mysateles on the one hand, and Capromys on the other hand. In turn, these four genera belong to the tribe Capromyini, and are the sister group to Plagiodontia.

Genus-level cladogram of the Capromyidae
with their relationship to Carterodon and Euryzygomatomyinae.

root  

Euryzygomatomyinae

         

  Trinomys (Atlantic spiny rats)

 
 

         

  Euryzygomatomys (guiaras)  

 
 

  Clyomys  

 
 
 
 

 

  Carterodon (Owl's spiny rat)  

 
Capromyidae

  Plagiodontini  

  Plagiodontia

 
  Capromyini  

 

  Geocapromys

 
         

         

         

  Mesocapromys

 
 

  Mysateles

 
 
 

  Capromys (Desmarest's hutia)

 
 
 
 
 
 
The cladogram has been reconstructed from mitochondrial and nuclear DNA characters.[4][5][6][2][7][8]

References

  1. ↑ Woods, C.A.; Kilpatrick, C.W. (2005). "Genus Geocapromys". In Wilson, D.E.; Reeder, D.M. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 1538–1600. ISBN 978-0-8018-8221-0. OCLC 62265494.
  2. 1 2 Fabre, Pierre-Henri; Vilstrup, Julia T.; Raghavan, Maanasa; Der Sarkissian, Clio; Willerslev, Eske; Douzery, Emmanuel J. P.; Orlando, Ludovic (2014-07-01). "Rodents of the Caribbean: origin and diversification of hutias unravelled by next-generation museomics". Biology Letters. 10 (7): 20140266. doi:10.1098/rsbl.2014.0266. ISSN 1744-9561. PMC 4126619.
  3. ↑ Morgan, G. S. (1994). "Late Quaternary fossil vertebrates from the Cayman Islands". In Brunt, M. A.; Davies, J. E. The Cayman Islands: natural history and biogeography. Kluwer Academic Publishers. pp. 491–492.
  4. ↑ Galewski, Thomas; Mauffrey, Jean-François; Leite, Yuri L. R.; Patton, James L.; Douzery, Emmanuel J. P. (2005). "Ecomorphological diversification among South American spiny rats (Rodentia; Echimyidae): a phylogenetic and chronological approach". Molecular Phylogenetics and Evolution. 34 (3): 601–615. doi:10.1016/j.ympev.2004.11.015.
  5. ↑ Upham, Nathan S.; Patterson, Bruce D. (2012). "Diversification and biogeography of the Neotropical caviomorph lineage Octodontoidea (Rodentia: Hystricognathi)". Molecular Phylogenetics and Evolution. 63 (2): 417–429. doi:10.1016/j.ympev.2012.01.020.
  6. ↑ Fabre, Pierre-Henri; Galewski, Thomas; Tilak, Marie-ka; Douzery, Emmanuel J. P. (2013-03-01). "Diversification of South American spiny rats (Echimyidae): a multigene phylogenetic approach". Zoologica Scripta. 42 (2): 117–134. doi:10.1111/j.1463-6409.2012.00572.x. ISSN 1463-6409.
  7. ↑ Upham, Nathan S.; Patterson, Bruce D. (2015). "Evolution of Caviomorph rodents: a complete phylogeny and timetree for living genera". In Vassallo, Aldo Ivan; Antenucci, Daniel. Biology of caviomorph rodents: diversity and evolution. Buenos Aires: SAREM Series A, Mammalogical Research — Sociedad Argentina para el Estudio de los Mamíferos. pp. 63–120.
  8. ↑ Fabre, Pierre-Henri; Upham, Nathan S.; Emmons, Louise H.; Justy, Fabienne; Leite, Yuri L. R.; Loss, Ana Carolina; Orlando, Ludovic; Tilak, Marie-Ka; Patterson, Bruce D.; Douzery, Emmanuel J. P. (2017-03-01). "Mitogenomic Phylogeny, Diversification, and Biogeography of South American Spiny Rats". Molecular Biology and Evolution. 34 (3): 613–633. doi:10.1093/molbev/msw261. ISSN 0737-4038.


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