Accepted taxon: Myocastor coypus
| Taxon: | Myocastor coypus |
|---|---|
| Rank: | Species |
| Higher Classification: | RODENTIA | HYSTRICOMORPHA | HYSTRICOGNATHI | Myocastoridae | Myocastor |
| Reference: | Wilson, Don E., and DeeAnn M. Reeder, eds. Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed), JHU Press, 2005. |
Fig.1 - Ternary plot of the proximate analysis for the Myocastor coypus diet.
CF (Crude Fibre) 18, ASH (Ash contents) 12, NFE (Nitrogen-Free-Extract) 52, CP (Crude Protein) 15, EE (Ether Extract) 4.
See details for the calculations in Lintulaakso, K., Tatti, N. and Žliobaitė, I., 2022. Quantifying mammalian diets.
Mammalian Biology, pp.1-15.
[DOI]
| TSN Complete name | Part | Ratio a. | Reference(s) |
|---|---|---|---|
| Magnoliopsida | SHOOT | 34.39 | Damuth, J… |
| Magnoliopsida | ROOT | 26.96 | Damuth, J… |
| Plantae | SHOOT | 10.00 | Reid,F., … |
| Bivalvia | WHOLE | 4.67 | Grzimek,B… |
| Oryza sativa | SEED | 4.00 | Grzimek,B… |
| Insecta | WHOLE | 3.33 | Grzimek,B… |
| Saccharum officinarum | STEM | 3.00 | Grzimek,B… |
| Glycine | SEED | 2.00 | Grzimek,B… |
| Gastropoda | WHOLE | 1.33 | Grzimek,B… |
| Zea mays | SEED | 1.00 | Grzimek,B… |
| Juncus | SHOOT | 0.99 | Grzimek,B… |
| Eleocharis | LEAF | 0.94 | Grzimek,B… |
| Lilianae | SHOOT | 0.88 | Grzimek,B… |
| Pontederia cordata | SHOOT | 0.82 | Grzimek,B… |
| Polygonum | SHOOT | 0.76 | Grzimek,B… |
| Sparganium | SHOOT | 0.70 | Grzimek,B… |
| Oligochaeta | WHOLE | 0.67 | Grzimek,B… |
| Schoenoplectus americanus | LEAF | 0.64 | Grzimek,B… |
| Typha | SHOOT | 0.58 | Grzimek,B… |
| Nereocystis luetkeanus | SHOOT | 0.53 | Grzimek,B… |
| Alternanthera philoxeroides | SHOOT | 0.47 | Grzimek,B… |
| Magnoliopsida | STEM | 0.41 | Grzimek,B… |
| Araceae | SHOOT | 0.41 | Grzimek,B… |
| Magnoliopsida | LEAF | 0.35 | Grzimek,B… |
| Magnoliopsida | BARK | 0.12 | Grzimek,B… |
| Trifolium | SHOOT | 0.06 | Grzimek,B… |
a. Standardized values. See details for the calculations in Lintulaakso, K., Tatti, N. and Žliobaitė, I., 2022. Quantifying mammalian diets. Mammalian Biology, pp.1-15. [DOI]
| Trait | Selected Value | All Value(s) | Reference(s) |
|---|---|---|---|
| Dietary category: Eisenberg 1981 | Herbivore-Grazer | Frugivore-omnivore, Herbivore-Browser, Herbivore-Grazer | – Arends, A. and McNab, B.K., 2001. The comparative energetics of ‘caviomorph’rodents. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 130(1), pp.105-122., Brian K. McNab, 1986, 'The Influence of Food Habits on the Energetics of Eutherian Mammals', Ecological Monographs, vol. 56, no. 1, p. 1, Ferreira, J., Rinderknecht, A., de Moura Bubadué, J., Gasparetto, L., Dozo, M., Sánchez-Villagra, M., Kerber, L. 2024. Unveiling the neuroanatomy of Josephoartigasia monesi and the evolution of encephalization in caviomorph rodents. Brain Structure and Function. None(None), pp.None. Available at: 10.1007/s00429-024-02762-y., Paglia,A. P., 2012, Lista Anotada dos Mamíferos do Brasil 2ª Edição Annotated Checklist of Brazilian Mammals 2nd Edition |
| Dietary category: Miljutin 2009 | Herbivore | Frugivore, Herbivore | – Arends, A. and McNab, B.K., 2001. The comparative energetics of ‘caviomorph’rodents. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 130(1), pp.105-122., Brian K. McNab, 1986, 'The Influence of Food Habits on the Energetics of Eutherian Mammals', Ecological Monographs, vol. 56, no. 1, p. 1, Cofre, H. and Marquet, P.A., 1999. Conservation status, rarity, and geographic priorities for conservation of Chilean mammals: an assessment. Biological Conservation, 88(1), pp.53-68., Ferreira, J., Rinderknecht, A., de Moura Bubadué, J., Gasparetto, L., Dozo, M., Sánchez-Villagra, M., Kerber, L. 2024. Unveiling the neuroanatomy of Josephoartigasia monesi and the evolution of encephalization in caviomorph rodents. Brain Structure and Function. None(None), pp.None. Available at: 10.1007/s00429-024-02762-y., JOSHUA X. SAMUELS, 2009, 'Cranial morphology and dietary habits of rodents', Zoological Journal of the Linnean Society, vol. 156, no. 4, pp. 864-888, Paglia,A. P., 2012, Lista Anotada dos Mamíferos do Brasil 2ª Edição Annotated Checklist of Brazilian Mammals 2nd Edition |
| Locomotion: Eisenberg 1981 | Semiaquatic | Aquatic, Semiaquatic | – Arends, A. and McNab, B.K., 2001. The comparative energetics of ‘caviomorph’rodents. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 130(1), pp.105-122., Carvalhaes, J., Tavares, W., do Val Vilela, R., D’Andrea, P. 2022. Phylogenetic, Allometric, and Ecological Factors Affecting Morphological Variation in the Scapula and Humerus of Spiny Rats (Rodentia: Echimyidae). Journal of Mammalian Evolution. None(None), pp.None. Available at: 10.1007/s10914-022-09617-5., Ferreira, J., Rinderknecht, A., de Moura Bubadué, J., Gasparetto, L., Dozo, M., Sánchez-Villagra, M., Kerber, L. 2024. Unveiling the neuroanatomy of Josephoartigasia monesi and the evolution of encephalization in caviomorph rodents. Brain Structure and Function. None(None), pp.None. Available at: 10.1007/s00429-024-02762-y., Joshua X. Samuels, Blaire Van Valkenburgh, 2008, 'Skeletal indicators of locomotor adaptations in living and extinct rodents', Journal of Morphology, vol. 269, no. 11, pp. 1387-1411, Joshua X. Samuels, Blaire Van Valkenburgh, 2008, 'Skeletal indicators of locomotor adaptations in living and extinct rodents', Journal of Morphology, vol. 269, no. 11, pp. 1387-1411, Paglia,A. P., 2012, Lista Anotada dos Mamíferos do Brasil 2ª Edição Annotated Checklist of Brazilian Mammals 2nd Edition |
| Measurement | Location | Unit | n Total | n Unknown | n Female | n Male | Min | Mean | Max | SD | Reference(s) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Body Mass (BM) | Chile | g | - | - | - | - | - | 4,193 | - | - | Cofre, H.… |
| Body Mass (BM) | nan | g | - | - | - | - | - | 4,980 | - | - | Ferreira,… |
| Body Mass (BM) | Brazil | g | - | - | - | - | 1,000 | 1,040 | 1,080 | - | Paglia,A.… |
| Body Mass (BM) | nan | g | - | - | - | - | 2,000 | - | 12,000 | - | Freudenth… |
| Body Mass (BM) | New World | g | - | - | - | - | - | 4,325 | - | - | Arends, A… |
| Measurement | Location | Unit | n Total | n Unknown | n Female | n Male | Min | Mean | Max | SD | Reference(s) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BMR (kJ/h) | nan | kJ/h | - | - | - | - | - | 61 | - | - | McNab, B.… |
| femur circumference | nan | mm | - | - | - | - | - | 33 | - | - | Nelson, A… |
| femur diameter | nan | mm | - | - | - | - | - | 9 | - | - | Nelson, A… |
| humerus circumference | nan | mm | - | - | - | - | - | 26 | - | - | Nelson, A… |
| humerus diameter | nan | mm | - | - | - | - | - | 7 | - | - | Nelson, A… |
| neck length | nan | mm | - | - | - | - | - | 40 | - | - | Nelson, A… |
| BCL, basicranial length | nan | mm | 1 | 1 | - | - | - | 30 | - | - | Ferreira,… |
| DL, diastema length | nan | mm | 1 | 1 | - | - | - | 28 | - | - | Ferreira,… |
| FW, frontal width | nan | mm | 1 | 1 | - | - | - | 38 | - | - | Ferreira,… |
| IW, incisor width | nan | mm | 1 | 1 | - | - | - | 12 | - | - | Ferreira,… |
| RL, rostral length | nan | mm | 1 | 1 | - | - | - | 58 | - | - | Ferreira,… |
| skull, condyle-basal length of the skull | nan | mm | 1 | 1 | - | - | - | 104 | - | - | Ferreira,… |
| TL, total length of skull | nan | mm | 1 | 1 | - | - | - | 113 | - | - | Ferreira,… |
| Upper T, Upper incisor transverse diameter | nan | mm | 1 | 1 | - | - | - | 6 | - | - | Ferreira,… |
| UTRW, Upper tooth row length | nan | mm | 1 | 1 | - | - | - | 30 | - | - | Ferreira,… |
| ZL, zygomatic arc length | nan | mm | 1 | 1 | - | - | - | 57 | - | - | Ferreira,… |
b. other Measurements. Source Measurements which are not listed on or mapped with the Standard Traits..
Citation for this page: [The MammalBase community 2026. / CC BY 4.0. http://doi.org/10.5281/zenodo.7462864 Myocastor coypus , Accessed 16th April 2026 at https://mammalbase.net/me/10231]