|Lowland paca range|
Mus paca Linnaeus, 1766
The lowland paca (Cuniculus paca), also known as the spotted paca, is a large rodent found in tropical and sub-tropical America, from East-Central Mexico to Northern Argentina. Introduced to Cuba, Bahamas, Jamaica and Hispaniola.
The animal is called paca in most of its range, but tepezcuintle in most of Mexico and Central America, pisquinte in northern Costa Rica, jaleb in the Yucatán peninsula, conejo pintado in Panama, guanta in Ecuador, majás or picuro in Peru, jochi pintado in Bolivia, and boruga, tinajo, or guartinaja in Colombia. It is also known as the gibnut in Belize, where it is prized as a game animal, labba in Guyana, lapa in Venezuela, and lappe on the island of Trinidad. Although lowland pacas are not in danger of being extinct, local extinctions have occurred due to habitat destructions.
There is much confusion in the nomenclature of this and related species; see agouti. In particular, the popular term agouti or common agouti normally refers to species of the distinct genus Dasyprocta (such as the Central American agouti, Dasyprocta punctata). Sometimes the word agouti is also used for a polyphyletic grouping uniting the families Cuniculidae and Dasyproctidae, which, besides the pacas and common agoutis, includes also the acouchis (Myoprocta). Cuniculus is the appropriate genus name instead of Agouti based on a 1998 ruling of the International Commission on Zoological Nomenclature as the lowland paca's genus.
The word "paca" comes from a word in the Tupi language that designates the animal but also means "awaken, alert." "Tepezcuintle" is of Nahuatl origin, meaning mountain dog: tepetl = mountain; itzquintli = dog.
The lowland paca has coarse fur without underfur, dark brown to black on the upper body and white or yellowish on the underbelly. It usually has three to five rows of white spots along its sides, against a dark grey background. It has thick strong legs, with four digits in the forefeet and five in the hind feet (the first and fifth are reduced); the nails function as hooves. The tail is short and hairless. The zygomatic arch is expanded laterally and dorsally and is used as a resonating chamber - a unique feature among mammals.
An adult lowland paca weighs between 6 and 12 kilograms (13 and 26 lb). While their fertility is low, the lowland pacas no trouble surviving. Each litter has one young lowland paca, sometimes two. They usually have one to three young a year with a gestation period of about 115–120 days. Pacas are sexually mature at about 1 year. A paca usually lives up to 13 years.
The lowland paca is mostly nocturnal and solitary and does not vocalize very much. It lives in forested habitats near water, preferably smaller rivers, and dig simple burrows about 2 m (6 ft 7 in) below the surface, usually with more than one exit. It can also sometimes live in burrows created by other animals. The lowland paca is a good swimmer and usually heads for the water to escape danger, as it can stay under water for several minutes. It also is a very good climber and it searches for fruit in the trees.
Economical and ecological aspects
The lowland paca is considered an agricultural pest for yam, cassava, sugar cane, corn and other food crops. Its meat is highly prized. It is plentiful in protected habitats, and hence not in danger of extinction, but overall its numbers have been much reduced because of hunting and habitat destruction. It is easily bred and raised in farms, although the taste is said to be inferior (perhaps unpleasant) when farmed. Some of the lowland paca predators include cats, coyotes, bush dogs, crocodiles, and boa constrictors.
- Woods, C.A.; Kilpatrick, C.W. (2005). "Infraorder Hystricognathi". In Wilson, D.E.; Reeder, D.M. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 1u38–1600. ISBN 978-0-8018-8221-0. OCLC 62265494.
- Vieira, E., Queirolo, D. & Samudio Jr, R. (2016). "Cuniculus paca". The IUCN Red List of Threatened Species. IUCN. 2016: e.T699A22197347. doi:10.2305/IUCN.UK.2016-2.RLTS.T699A22197347.en. Retrieved 4 February 2018.
- Long, J. L. (2003). Introduced Mammals of the World: Their History, Distribution and Influence. Csiro Publishing, Collingwood, Australia. ISBN 9780643099166
- (in Spanish) Fauna y flora de la cuenca media del Río Lebrija en Rionegro, Santander - Humboldt Institute
- Woods, C.A.; Kilpatrick, C.W. (2005). "Infraorder Hystricognathi". 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.
- "Archived copy". Archived from the original on 2012-08-09. Retrieved 2012-09-10.
- FERREIRA, A. B. H. Novo Dicionário da Língua Portuguesa. Segunda edição. Rio de Janeiro: Nova Fronteira, 1986. p. 1 243
- "Cuniculus paca: Emmons, L." IUCN Red List of Threatened Species. 2016-03-01. doi:10.2305/iucn.uk.2016-2.rlts.t699a22197347.en. Retrieved 2018-04-26.
- Domestication and husbandry of the paca (Agouti paca). Food and Agriculture Organization of the United Nations. 1995. ISBN 9789251036402.
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