South American fox

The South American foxes (Lycalopex), commonly called raposa in Portuguese, or zorro in Spanish, are a genus from South America of the subfamily Caninae. Despite their name, they are not true foxes, but are a unique canid genus related to wolves and jackals; some of them somewhat resemble foxes due to convergent evolution. The South American gray fox, Lycalopex griseus, is the most common species, and is known for its large ears and a highly marketable, russet-fringed pelt.

Lycalopex[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Canidae
Tribe: Canini
Subtribe: Cerdocyonina
Genus: Lycalopex
Burmeister 1854
Species
Synonyms
  • Pseudalopex Burmeister 1856
  • Canis (Pseudalopex) Allen 1895

The second-oldest known fossils belonging to the genus were discovered in Chile, and date from 2.0 to 2.5 million years ago, in the mid- to late Pliocene.[3] The Vorohué Formation of Argentina has provided older fossils, dating to the Uquian to Ensenadan (Late Pliocene).[4]

Names

The common English word "zorro" is a loan word from Spanish, with the word originally meaning "fox". Current usage lists Pseudalopex (literally: "false fox") as synonymous with Lycalopex ("wolf fox"), with the latter taking precedence.[1] The IUCN, for instance, retains the use of Pseudalopex while also acknowledging Lycalopex as a legitimate alternative.[5] In 1895, Allen classified Pseudalopex as a subgenus of Canis, establishing the combination Canis (Pseudalopex), a name still used in the fossil record.[2]

Species

Species currently included in this genus include:[1]

ImageNameCommon nameDistribution
Lycalopex culpaeusCulpeo or Andean foxEcuador and Peru to the southern regions of Patagonia and Tierra del Fuego
Lycalopex fulvipesDarwin's foxNahuelbuta National Park (Araucanía Region), the Valdivian Coastal Range (Los Ríos Region) in mainland Chile and Chiloé Island
Lycalopex griseusSouth American gray foxArgentina and Chile
Lycalopex gymnocercusPampas foxnorthern and central Argentina, Uruguay, eastern Bolivia, Paraguay, and southern Brazil
Lycalopex sechuraeSechuran foxwest-central, northwestern Peru, including the Sechura Desert, and southwestern Ecuador
Lycalopex vetulusHoary foxsouth-central Brazil
Canis (Pseudalopex) australisVorohué Formation, Uquian-Ensenadan Argentina[4]

In 1914, Oldfield Thomas established the genus Dusicyon, in which he included these zorros. They were later reclassified to Lycalopex (via Pseudalopex) by Langguth in 1975.[1]

Phylogeny

The following phylogenetic tree shows the evolutionary relationships between the Lycalopex species, based on molecular analysis of mitochondrial DNA control region sequences.[6]

Lycalopex

Lycalopex vetulus (hoary fox)

Lycalopex sechurae (Sechuran fox or Peruvian desert fox)

Lycalopex fulvipes (Darwin's fox)

Lycalopex gymnocercus (pampas fox)

Lycalopex griseus (South American gray fox or chilla)

Lycalopex culpaeus (culpeo or Andean fox)

Relationship with humans

The zorros are hunted in Argentina for their durable, soft pelts. They are also often labelled 'lamb-killers'.

The Fuegian dog (Spanish: perro yagán, perro fueguino), also known as the Yaghan dog, was a domesticated form of the culpeo (Lycalopex culpaeus),[7] unlike other domesticated canids which were dogs and silver foxes. This means different canid species have been domesticated multiple times by humans independently.

References

  1. Wozencraft, W.C. (2005). "Order Carnivora". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494.
  2. Canis (Pseudalopex) australis at Fossilworks.org
  3. Lucherini, M. & Luengos Vidal, E. M. (2008). "Lycalopex gymnocercus (Carnivora: Canidae)". Mammalian Species. 820: Number 820, pp. 1–9. doi:10.1644/820.1.
  4. Vorohuen (sic; Vorohué) Formation at Fossilworks.org
  5. Jiménez, J. E. (2008). "Pseudalopex culpaeus". IUCN Red List of Threatened Species. 2008. Retrieved May 8, 2012.
  6. Tchaicka, Ligia; Freitas, Thales Renato Ochotorena de; Bager, Alex; Vidal, Stela Luengos; Lucherini, Mauro; Iriarte, Agustín; Novaro, Andres; Geffen, Eli; Garcez, Fabricio Silva; Johnson, Warren E.; Wayne, Robert K.; Eizirik, Eduardo (2016). "Molecular assessment of the phylogeny and biogeography of a recently diversified endemic group of South American canids (Mammalia: Carnivora: Canidae)" (PDF). Genetics and Molecular Biology. 39 (3): 442–451. doi:10.1590/1678-4685-GMB-2015-0189. PMC 5004827. PMID 27560989.
  7. Petrigh, Romina S.; Fugassa, Martin H. (December 13, 2013). "Molecular identification of a Fuegian dog belonging to the Fagnano Regional Museum ethnographic collection, Tierra del Fuego" (PDF). Quaternary International. 317: 14–18. doi:10.1016/j.quaint.2013.07.030. Archived from the original (PDF) on December 20, 2016. Retrieved September 2, 2020.

Further reading

  • Nowak, Ronald M. (2005). Walker's Carnivores of the World. Baltimore: Johns Hopkins Press. ISBN 0-8018-8032-7
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