Animalia > Chordata > Mammalia > Rodentia > Myocastoridae > Myocastor > Myocastor coypusMyocastor coypus (nutria)Synonyms: Mastonotus popelairi; Mus coypus (homotypic); Myocaster coypus; Myopotamus coypu; Myopotamus coypus Language: French The coypu (from Spanish coipú, from Mapudungun kóypu; Myocastor coypus), also known as the river rat or nutria, is a large, herbivorous, semiaquatic rodent and the only member of the family Myocastoridae. Originally native to subtropical and temperate South America, it has since been introduced to North America, Europe, Asia, and Africa, primarily by fur ranchers. Although it is still valued for its fur in some regions, its destructive feeding and burrowing behaviors make this invasive species a pest throughout most of its range. |
Uniqueness Scale: Similiar (0) Unique (100) Uniqueness & Vulnerability Scale: Similiar & Secure (0) Unique & Vulnerable (100) ED Score: 17.76 EDGE Score: 2.93 |
Gestation [2] | 4 months 11 days | Litter Size [2] | 6 | Litters / Year [2] | 2 | Maximum Longevity [2] | 9 years | Nocturnal [1] | Yes | Snout to Vent Length [4] | 23 inches (58 cm) | Water Biome [1] | Lakes and Ponds, Rivers and Streams, Brackish Water | Weaning [2] | 3 months 1 day | | Adult Weight [2] | 17.306 lbs (7.85 kg) | Birth Weight [2] | 225 grams | | Diet [3] | Herbivore | Diet - Plants [3] | 100 % | Forages - Ground [3] | 100 % | | Female Maturity [2] | 5 months 2 days | Male Maturity [2] | 5 months 2 days |
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Name |
Countries |
Ecozone |
Biome |
Species |
Report |
Climate |
Land Use |
Alaska & Canada Pacific Coastal |
Canada, United States |
Nearctic |
Temperate Coastal Rivers |
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Alta Paraná Atlantic forests |
Brazil, Paraguay, Argentina |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Appalachian Piedmont |
United States |
Nearctic |
Temperate Coastal Rivers |
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Araucaria moist forests |
Brazil |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Atlantic Coast restingas |
Brazil |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Bolivian montane dry forests |
Bolivia |
Neotropic |
Tropical and Subtropical Dry Broadleaf Forests |
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Bolivian Yungas |
Bolivia |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Cantabric Coast - Languedoc |
France, Spain |
Palearctic |
Temperate Coastal Rivers |
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Central & Western Europe |
Austria, Belgium, Byelarus, Czech Republic, Denmark, France, Germany, Liechtenstein, Lithuania, Luxembourg, Netherlands, Poland, Russia, Slovakia, Switzerland, Ukraine, United Kingdom |
Palearctic |
Temperate Floodplain River and Wetlands |
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Central Andean puna |
Argentina, Bolivia, Peru |
Neotropic |
Montane Grasslands and Shrublands |
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Chesapeake Bay |
United States |
Nearctic |
Temperate Coastal Rivers |
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Chilean matorral |
Chile |
Neotropic |
Mediterranean Forests, Woodlands, and Scrub |
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Chiquitano dry forests |
Bolivia, Brazil |
Neotropic |
Tropical and Subtropical Dry Broadleaf Forests |
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Columbia Unglaciated |
United States |
Nearctic |
Temperate Floodplain River and Wetlands |
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Dry Chaco |
Bolivia, Paraguay, Argentina |
Neotropic |
Tropical and Subtropical Dry Broadleaf Forests |
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East Texas Gulf |
United States |
Nearctic |
Temperate Coastal Rivers |
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Espinal |
Argentina |
Neotropic |
Temperate Grasslands, Savannas, and Shrublands |
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Florida Peninsula |
United States |
Nearctic |
Tropical and Subtropical Coastal Rivers |
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Gulf of Venice Drainages |
Italy, San Marino, Slovenia, Switzerland |
Palearctic |
Temperate Coastal Rivers |
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High Monte |
Argentina |
Neotropic |
Deserts and Xeric Shrublands |
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Humid Chaco |
Argentina, Paraguay, Brazil |
Neotropic |
Tropical and Subtropical Grasslands, Savannas, and Shrublands |
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Humid Pampas |
Argentina |
Neotropic |
Temperate Grasslands, Savannas, and Shrublands |
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Iguassu |
Argentina, Brazil |
Neotropic |
Tropical and Subtropical Upland Rivers |
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Jordan River |
Egypt, Israel, Jordan, Lebanon, Syria |
Palearctic |
Xeric Freshwaters and Endorheic Basins |
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Laurentian Great Lakes |
Canada, United States |
Nearctic |
Large Lakes |
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Low Monte |
Argentina |
Neotropic |
Temperate Grasslands, Savannas, and Shrublands |
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Lower Mississippi |
United States |
Nearctic |
Temperate Floodplain River and Wetlands |
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Lower Parana |
Argentina, Paraguay, Uruguay |
Neotropic |
Temperate Floodplain River and Wetlands |
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Lower Rio Grande - Bravo |
Mexico, United States |
Nearctic |
Temperate Floodplain River and Wetlands |
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Magellanic subpolar forests |
Chile, Argentina |
Neotropic |
Temperate Broadleaf and Mixed Forests |
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Oregon & Northern California Coastal |
United States |
Nearctic |
Temperate Coastal Rivers |
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Ouachita Highlands |
United States |
Nearctic |
Temperate Upland Rivers |
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Ozark Highlands |
United States |
Nearctic |
Temperate Upland Rivers |
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Paraná flooded savanna |
Argentina |
Neotropic |
Flooded Grasslands and Savannas |
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Patagonian steppe |
Chile, Argentina |
Neotropic |
Temperate Grasslands, Savannas, and Shrublands |
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Pecos |
United States |
Nearctic |
Xeric Freshwaters and Endorheic Basins |
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Sabine - Galveston |
United States |
Nearctic |
Temperate Coastal Rivers |
|
|
|
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Serra do Mar coastal forests |
Brazil |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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South Andean Pacific Slopes |
Argentina, Chile |
Neotropic |
Temperate Coastal Rivers |
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Southern Andean steppe |
Argentina, Chile |
Neotropic |
Montane Grasslands and Shrublands |
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Southern Andean Yungas |
Bolivia, Argentina |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Southern Cone Mesopotamian savanna |
Argentina |
Neotropic |
Flooded Grasslands and Savannas |
|
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Teays - Old Ohio |
United States |
Nearctic |
Temperate Upland Rivers |
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Upper Danube |
Austria, Croatia, Czech Republic, Germany, Hungary, Italy, Poland, Slovakia, Slovenia, Switzerland |
Palearctic |
Temperate Floodplain River and Wetlands |
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Uruguayan savanna |
Uruguay, Brazil, Argentina |
Neotropic |
Tropical and Subtropical Grasslands, Savannas, and Shrublands |
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Valdivian temperate forests |
Chile, Argentina |
Neotropic |
Temperate Broadleaf and Mixed Forests |
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West Florida Gulf |
United States |
Nearctic |
Temperate Coastal Rivers |
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West Texas Gulf |
United States |
Nearctic |
Tropical and Subtropical Coastal Rivers |
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Name |
IUCN Category |
Area acres |
Location |
Species |
Website |
Climate |
Land Use |
Amistad National Recreation Area |
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Texas, United States |
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Amudarya Zapovednik State Nature Reserve |
Ia |
152861 |
Lebap, Turkmenistan |
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Bañados del Este Wetland Reserve |
|
986054 |
Uruguay |
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Big Cypress National Preserve |
V |
732120 |
Florida, United States |
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Big Thicket Biosphere Reserve National Park |
II |
616880 |
Texas, United States |
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Blackwater National Wildlife Refuge |
VI |
19192 |
Maryland, United States |
|
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Bombay Hook National Wildlife Refuge |
VI |
16363 |
Delaware, United States |
|
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Bosque Mbaracayú Biosphere Reserve |
V |
691895 |
Paraguay |
|
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Breckland |
|
18652 |
England, United Kingdom |
|
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Cape Lookout National Seashore |
II |
18379 |
North Carolina, United States |
|
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Carolinian-South Atlantic Biosphere Reserve |
|
310228 |
North Carolina, South Carolina, Georgia, United States |
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Codru (Kodry) Zapovednik Scientific Reserve |
Ia |
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Moldova |
|
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Dorset Heaths (Purbeck and Wareham) and Studland Dunes |
|
5491 |
England, United Kingdom |
|
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El Palmar National Park |
II |
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Entre Rios, Argentina |
|
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El Rey National Park |
II |
110298 |
Salta, Argentina |
|
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Essex Estuaries |
|
114016 |
England, United Kingdom |
|
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Estacion Biologica Beni Biosphere Reserve |
VI |
335178 |
Bolivia |
|
|
|
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Felsenthal National Wildlife Refuge |
VI |
66133 |
Arkansas, United States |
|
|
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Fenland |
|
1529 |
England, United Kingdom |
|
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|
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Lacassine National Wildlife Refuge |
VI |
28351 |
Louisiana, United States |
|
|
|
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Lago Puelo National Park |
II |
47607 |
Chubut, Argentina |
|
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|
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Lanín National Park |
II |
536819 |
Neuquen, Argentina |
|
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|
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LIMNI STYMFALIA |
|
3234 |
Greece |
|
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Little River National Wildlife Refuge |
|
|
Oklahoma, United States |
|
|
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Los Alerces National Park |
II |
463045 |
Chubut, Argentina |
|
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|
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Luberon Regional Nature Park |
V |
406572 |
France |
|
|
|
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Mburucuyá National Park |
II |
|
Corrientes, Argentina |
|
|
|
|
Mertelstal - Heldrastein |
|
620 |
Germany |
|
|
|
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Minsmere to Walberswick Heaths and Marshes |
|
3127 |
England, United Kingdom |
|
|
|
|
Morombi Private Reserve Natural Private Reserve |
IV |
68152 |
Paraguay |
|
|
|
|
Nahuel Huapi National Park |
II |
759703 |
Argentina |
|
|
|
|
Noel Kempff Mercado National Park |
II |
4006523 |
Bolivia |
|
|
|
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North Norfolk Coast |
|
7926 |
England, United Kingdom |
|
|
|
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Ocmulgee National Monument |
V |
693 |
Georgia, United States |
|
|
|
|
Padre Island National Seashore |
II |
42068 |
Texas, United States |
|
|
|
|
Parque Atlantico Mar Chiquita Nature Reserve |
VI |
706059 |
Cordoba, Argentina |
|
|
|
|
Parque Nacional Iguazú National Park |
II |
115949 |
Argentina |
|
|
|
|
Parque Nacional Laguna San Rafael National Park |
II |
4560904 |
Aisén, Chile |
|
|
|
|
Prespa National Park |
II |
62043 |
Greece |
|
|
|
|
Reserva Natural Otamendi Strict Nature Reserve |
Ia |
|
Buenos Aires, Argentina |
|
|
|
|
Reserve Nationale de Camargue Biosphere Reserve |
|
32232 |
France |
|
|
|
|
Río Negro National Park |
II |
73775 |
Paraguay |
|
|
|
|
Río Pilcomayo National Park |
II |
123699 |
Formosa, Argentina |
|
|
|
|
San Antonio Missions National Historical Park |
VI |
854 |
Texas, United States |
|
|
|
|
San Rafael, Reserva de Recursos Manejados Managed Resource Reserve |
VI |
165840 |
Paraguay |
|
|
|
|
Schorfheide-Chorin Biosphere Reserve |
|
319164 |
Germany |
|
|
|
|
Spreewald Biosphere Reserve |
|
117355 |
Germany |
|
|
|
|
The Broads |
|
14554 |
England, United Kingdom |
|
|
|
|
The Wash and North Norfolk Coast |
|
266284 |
England, United Kingdom |
|
|
|
|
Tinfunqué National Park |
|
607935 |
Paraguay |
|
|
|
|
Upper Miss. River Nat'l Wildlife Refuge National Wildlife Refuge |
VI |
25823 |
Illinois, Iowa, Wisconsin, United States |
|
|
|
|
Ybycu'í National Park |
II |
13915 |
Paraguay |
|
|
|
|
YGROTOPOS EKVOLON KALAMA KAI NISOS PRASOUDI |
|
21108 |
Greece |
|
|
|
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Attributes / relations provided by ♦ 1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at animaldiversity.org♦ 2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774 ♦ 3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027 ♦ 4Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109 ♦ 5Food habits of the coypu, Myocastor coypus, and its impact on aquatic
vegetation in a freshwater habitat of NW Italy, Claudio PRIGIONI, Alessandro BALESTRIERI and Luigi REMONTI, Folia Zool. – 54(3): 269–277 (2005) ♦ 6Myocastor coypus, Charles A. Woods, Luis Contreras, Gale Willner-Chapman, and Howard P. Whidden, MAMMALIAN SPECIES No. 398, pp. 1-8 (1992) ♦ 7"Feeding habits of Geoffroy's cat (Leopardus geoffroyi) in southern Brazil", Kleisson S. Sousa, A. Bager, Mammalian Biology - Zeitschrift für Säugetierkunde Volume 73, Issue 4, 15 July 2008, Pages 303–308 ♦ 8Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London ♦ 9International Flea DatabaseEcoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database |
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0
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