Animalia > Chordata > Mammalia > Rodentia > Cricetidae > Oligoryzomys > Oligoryzomys eliurusOligoryzomys eliurus (Brazilian pygmy rice rat)Synonyms: Oryzomys utiaritensis Oligoryzomys nigripes, also known as the black-footed colilargo or the black-footed pygmy rice rat, is a rodent in the genus Oligoryzomys of family Cricetidae. It is found from Pernambuco in northeastern Brazil through the Atlantic Forest and Cerrado into Paraguay, Uruguay, and Argentina, where it occurs in the provinces of Chaco, Misiones, and Buenos Aires. It is a large species with long ears, dark yellow to dark brown upperparts, sharply delimited from the whitish underparts, and often a pink girdle on the chest. The karyotype is 2n = 62, FNa = 78–82. |
Uniqueness Scale: Similiar (0) Unique (100) Uniqueness & Vulnerability Scale: Similiar & Secure (0) Unique & Vulnerable (100) ED Score: 2.25 EDGE Score: 1.18 |
Adult Weight [1] | 30 grams | | Diet [2] | Carnivore (Invertebrates), Frugivore, Granivore | Diet - Fruit [2] | 30 % | Diet - Invertibrates [2] | 30 % | Diet - Seeds [2] | 40 % | Forages - Ground [2] | 100 % | | Nocturnal [2] | Yes | Snout to Vent Length [3] | 8 inches (20 cm) |
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Name |
Countries |
Ecozone |
Biome |
Species |
Report |
Climate |
Land Use |
Alta ParanĂ¡ Atlantic forests |
Brazil, Paraguay, Argentina |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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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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Atlantic dry forests |
Brazil |
Neotropic |
Tropical and Subtropical Dry Broadleaf Forests |
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Bahia coastal forests |
Brazil |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Bahia interior forests |
Brazil |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Caatinga |
Brazil |
Neotropic |
Deserts and Xeric Shrublands |
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Caatinga Enclaves moist forests |
Brazil |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Campos Rupestres montane savanna |
Brazil |
Neotropic |
Tropical and Subtropical Grasslands, Savannas, and Shrublands |
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Cerrado |
Brazil, Bolivia, Paraguay |
Neotropic |
Tropical and Subtropical Grasslands, Savannas, and Shrublands |
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Pantanal |
Brazil, Bolivia, Paraguay |
Neotropic |
Flooded Grasslands and Savannas |
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Pernambuco coastal forests |
Brazil |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Pernambuco interior forests |
Brazil |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Serra do Mar coastal forests |
Brazil |
Neotropic |
Tropical and Subtropical Moist Broadleaf Forests |
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Southern Atlantic mangroves |
Brazil |
Neotropic |
Mangroves |
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Name |
Location |
Endemic |
Species |
Website |
Atlantic Forest |
Argentina, Brazil, Paraguay, Uruguay |
No |
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Cerrado |
Brazil |
No |
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Attributes / relations provided by ♦ 1Felisa A. Smith, S. Kathleen Lyons, S. K. Morgan Ernest, Kate E. Jones, Dawn M. Kaufman, Tamar Dayan, Pablo A. Marquet, James H. Brown, and John P. Haskell. 2003. Body mass of late Quaternary mammals. Ecology 84:3403 ♦ 2Hamish 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 ♦ 3Nathan 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 ♦ 4Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London ♦ 5International 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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