Save the Wild Chinchillas

If after reading this article you would like to contribute to Save the Wild Chinchillas, Inc. please click here Chinchillas are endangered due to exploitation of the animal for fur. Protected wild populations continue to decline. Its habitat is threatened by human land alterations in north central Chile. Without funds, research and conservation wild populations will be extinct in the near future (Jiménez, pers. comm.). Chinchillas are originally gray in color with a small squirrel-like body, enlarged mouse ears and a bushy tail. The characteristic that they are best known for is their plush fur. Where humans have one hair from each follicle, a chinchilla has more than 50 hairs from a single follicle (Meadow, 1969). An adult chinchilla weighs between 500 and 800 grams. Chinchillas' gestation period last 111 days. One or two young are born eyes open, fully furred and active or precocial. Sexual maturity is around eight months. Wild Chinchilla Females can have up to two litters per year. When compared to other rodents, chinchillas have a long gestation periods resulting in few offspring. Chinchillas are nocturnal and live in colonies. Two species of chinchillas are recognized as: Chinchilla brevicaudata (Blue Bolivian Chinchilla), and Chinchilla lanigera (Lanigera) (Nowak, 1991; Jiménez, 1996). Exploitation for the fur trade to markets in Europe and North America started by the onset of the 19th century and demand for the pelts continues today. Requiring a hundred pelts per coat, this fur is among the most expensive and rarest in the world. "In 1928, a coat made of Bolivian pelts cost half a million gold marks" (Bickel, 1937). In 1992, a domestic chinchilla fur coat on sale at Elan Furs (Indianapolis, Indiana) cost $22,000. The chinchilla population declined steadily because of hunting and trapping. At the end of the nineteenth century, the once abundant animals had become endangered. Humans were hunting and trapping the animal for its fur faster than the animal could repopulate themselves resulting in scarcity of the species. According to Meadow (1969), "the disappearance of the once beautiful chinchilla alarmed the South American governments of Chile, Peru, Bolivia, and Argentina. By 1918 all of them had placed an embargo on exportation of chinchilla furs, and had laws against trapping the animal." Of the 21 million killed, Iriarte (1986) reports that 7,179,640 pelts were exported from Chile between 1828 and 1916 (Jiménez, 1994). Chile enacted protection in 1898 but protection from hunting was probably too late for the existing wild populations (1994, Thornback, 1969). Wild Baby Any existing (or surviving) chinchillas were included among the endangered wild species mentioned in Appendix I of the 1973 Convention on International Trade in Endangered Fauna and Flora" (Stehnke, 1990; Nowak, 1991; Thornback, 1969). CITES places a ban on the exportation and importation of the animals and their pelts among agreeing countries. Although wild chinchillas' range once extended to Peru and Bolivia, it is now extinct there (Thornback, 1969; Jiménez, 1994). In Chile, wild chinchillas are listed as endangered (CONAF, 1988). As early as 1937, people recognized chinchilla populations had been severely altered but could probably "re-establish itself in 7 or 8 years" (Bidlingmaier, 1937). Since Reserva Nacional Las Chinchillas- CNR's establishment 15 years ago, the animal has not re-established itself. Populations within the reserve continue to decline without clear explanations (Jiménez, 1994). How fast can the animal reproduce and achieve recruitment? If a mated pair has two offspring, which survive in their first litter, replacement of the original pair has occurred. Any additional offspring are seen as recruitment or population growth. Recruitment leads to higher populations, our optimal goal. C. lanigera's original range included the foothills of the Andes in Chile from northwest of Potrerillos south to Rio Choapa (1996). Wild C. lanigera was thought to be extinct (Noguer, 1970). In the mid-seventies, this species was rediscovered in providence IV, Region de Coquimbo, Chile. To protect these colonies, Corporacion Nacional Forestal -CONAF (the Chilean Park Service) established Reserva Nacional Las Chinchillas-CNR in 1983. Work Site Today, two disjunct populations of C. lanigera are located in this region of Chile. The northern distribution near La Serena has one colony encompassing 46 ha (Jiménez, 1995). Located two hundred fifty km south near Illapel are approximately 40 colonies (1995). These colonies house fewer than 4000 chinchillas (recalculated from Jiménez, 1995). Less than half of the known colonies are within the reserve. Sixty percent of the colonies "had less than 50 individual whereas none had more than 500 individuals" and covered from fewer than two to more than 113 ha (1995). Most colonies are located on northern facing slopes but rocky southern slopes also host some chinchillas. Central Chile is geologically complex. In this region coastal mountains meet the Andean Range. These are crossed by transverse mountain chains. Topography changes abruptly and the sandy foothills of the Andes prove to be a difficult terrain for humans to climb. The area is dissected by an meandering intermittent river channel that is dry most of the year. This area is a semi-desert biome with two distinct seasons: a dry hot season and a mild wet season. Annual rainfall between 1980 and 1996 averaged 18 cm, most occurring during the winter wet season of June, July and August. Vegetation assemblages are characteristic of semi-arid and Mediterranean climates and include many cacti and succulent species (Veliz, 1985). Most Chinchillas burrow to create tunnels within the Puya berteroniana, card˘n plant (Mohlis, pers. comm. 1995). A succulent, terrestrial bromiliad, card˘n can be found on equatorial slopes. Practices of trying to encourage, entice or force chinchillas out of their protective burrows led to the destruction of habitat. Chinchilleros (chinchillas trappers) used smoke, fire and explosives "to drive chinchillas out of their burrows" (Jiménez, 1995). Disturbing their habitat can increase the animals stress and place the animal in alert and defensive behaviors. This disruption reduces the amount of energy and time chinchillas have for rest and reproduction. Furthermore, structural damage to burrows can block tunneling systems which the animal depends upon for safety when escaping from natural predators which include foxes and birds of prey. A small proportion of chinchillas live in crevices among rocks. Puya Passive management techniques have apparently not resulted in increased chinchilla populations. Successful conservation programs must utilize active management techniques in order to encourage increases in recruitment. Fragmented habitat leaves gaps which prevent dispersal and expansion of chinchillas and colonies. Intra-colony gene flow must be possible in order for the species to survive. This exchange of genetic material is more likely to occur in areas where the species does not have to cross unprotected or hostile barriers in order to reach potential mates. Practices of revegetation can reduce barriers to genetic flow encouraging recruitment eventually resulting in higher populations. Actively creating habitat aids in conservation of this species by reducing competition and barriers while increasing available resources. Clearing land for hunting, mining and farming has resulted in habitat fragmentation as well as degradation. Practices of revegetation should try to: close gaps in distributions, increase habitat and reduce competition. Restoration efforts of chinchilla habitat began in 2000 and continue today. The focus of re-vegetation is to plant seedlings and broadcast seeds that will complement and expand colonies and their interconnections or corridors. Work Site Preservation and expansion of protected lands must continue in order to facilitate conservation efforts. Special ecological areas need protection from human disturbances if endangered animals are going to survive. Expansion of protected habitat must be planned, evaluated and carried out on an ongoing basis. Save the Wild Chinchillas, Inc. is a not-for-profit organization formed to aid in conservation of wild chinchillas. Its goal is to ensure that these endangered animals do not become extinct. In order to meet this goal we have three objectives: educate people of all ages, collect funds to buy land and create preserves, and promote studies. Members of Save the Wild Chinchillas actively creates habitat by collecting seeds, growing plants in nurseries and restoring vegetation, visit schools and provide current and correct information to both teachers and students locally in Chile and worldwide. Members have conducted scientific studies not only for school projects but also for the Chilean Parks Service. The latest study based on data collect by the Chilean Parks service detected a 15% decrease of the wild chinchilla population since 1996. Bibliography Bickel, E. Sudamerikanische CHINCHILLAS, Wie man sie halt und zuchtet. Trans. U. Erich Friese. Chinchilla Handbook. 6th ed. Neptune City: T.F.H. Publications, Inc., 1987. Bidlingmaier, T.C. (1937). Notes on the genus Chinchilla. Journal of Mammalogy, 18, 159-163. "Chinchilla." Walker's Mammals of the World. Ed. Robert M. Nowak. 5 th ed. Baltimore and London: The John Hopkins University Press, 1991. CONAF-Corporacion Nacional Forestal. Brochure of endangered Chilean mammals. Santiago,1988. El mundo de los animales. Ed. Noguer. 2 ed. Milan: Rizzoli, 1970. International Union For Conservation Of Nature And Natural Resources. "Long-Tailed Chinchilla." The IUCN Mammal Red Data Book Part 1. Ed. J. Thornback. Gland: IUCN, 1984. Iriarte, J.A. and Jaksic, F.M. (1986). The fur trade in Chile: an overview of seventy-five years of export data (1910-1984). Biological Conservation, 38, 243-253. Jiménez, J.E. (1990). Proyecto conservacion de la chinchilla chilean (Chinchilla lanigera), CONAF-WWF 1297. Final report, March 1987 -February 1990. Corporation Nacional Forestal, Illapel, IV Region, Chile. Jiménez, J.E. (1994). Overuse and endangerment of wildlife: the case of Chilean mammals. Medio Ambienta (Chile), 12, 102-110. Jiménez, J.E. (1995). Conservation of the last wild chinchilla (Chinchilla lanigera) archipelago: a metapopulation approach. Vida Silvestre Neotropical, 4(2):89-97. Jiménez, J.E. (1996). The extirpation and current status of wild chinchillas Chinchilla lanigera and C. brevicaudata. Biological Conservation, 77:1-6. Meadow, Harold. The Chinchilla. Redwood City: The Tozer Co., 1969. Mohlis, C.(1983) Informacion preliminar sobre la coservacion y manejo de la chinchilla silvestre en Chile. Boletin Tecnico No.3, Santiago. Corporation Nacional Forestral, Santiago. Mohlis, Connie. Phone interview. December 1995. South American Handbook. Ed. B. Box. 3rd ed. Chicago: Passport Books, 1996. The International Wildlife Encyclopedia. "Chinchilla." Ed. M. Burton and R. Burton. 4 th vols.New York: B.P.C. Publishing Limited, 1969. Veliz, J.R. Geografia de Chile. Santiago: Publicaciones Lo Castillo S.A., 1985. Walker's Mammals of the World. Chinchillas Ed. R. M. Nowak. 5 th ed. Baltimore and London:The John Hopkins University Press, 1991. If after reading this article you would like to contribute to Save the Wild Chinchillas, Inc. please click here