MammalBase - Accepted taxon: Spalacopus cyanus

Accepted taxon: Spalacopus cyanus
Taxon:	Spalacopus cyanus
Rank:	Species
Higher Classification:	RODENTIA \| HYSTRICOMORPHA \| HYSTRICOGNATHI \| Octodontidae \| Spalacopus
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 Spalacopus cyanus diet.
CF (Crude Fibre) 12, ASH (Ash contents) 6, NFE (Nitrogen-Free-Extract) 65, CP (Crude Protein) 13, EE (Ether Extract) 3. See details for the calculations in Lintulaakso, K., Tatti, N. and Žliobaitė, I., 2022. Quantifying mammalian diets. Mammalian Biology, pp.1-15. [DOI]

Table 1. List of Diet Items for Spalacopus cyanus.
TSN Complete name	Part	Ratio ^a.	Reference(s)
Amaryllidaceae	ROOT	46.67	Grzimek,B…
Magnoliopsida	ROOT	28.89	Damuth, J…
Magnoliopsida	STEM	14.44	Damuth, J…
Amaryllidaceae	STEM	10.00	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]

Table 2. List of Standard Traits for Spalacopus cyanus.
Trait	Selected Value	All Value(s)	Reference(s)
Dietary category: Eisenberg 1981	Herbivore-Grazer	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.
Dietary category: Miljutin 2009	Herbivore	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., 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., JOSHUA X. SAMUELS, 2009, 'Cranial morphology and dietary habits of rodents', Zoological Journal of the Linnean Society, vol. 156, no. 4, pp. 864-888
Locomotion: Eisenberg 1981	Fossorial	Fossorial	– 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.

Table 3. List of Standard Measurements for Spalacopus cyanus.
Measurement	Location	Unit	n Total	n Unknown	n Female	n Male	Min	Mean	Max	SD	Reference(s)
Body Mass (BM)	nan	g	-	-	-	-	43	-	190	-	Freudenth…
Body Mass (BM)	Chile	g	-	-	-	-	-	100.9	-	-	Cofre, H.…
Body Mass (BM)	New World	g	-	-	-	-	-	136	-	-	Arends, A…

Table 4. List of other Measurements ^b. for Spalacopus cyanus.
Measurement	Location	Unit	n Total	n Unknown	n Female	n Male	Min	Mean	Max	SD	Reference(s)
BMR (kJ/h)	nan	kJ/h	-	-	-	-	-	2	-	-	McNab, B.…
femur circumference	nan	mm	-	-	-	-	-	7	-	-	Nelson, A…
femur diameter	nan	mm	-	-	-	-	-	2	-	-	Nelson, A…
humerus circumference	nan	mm	-	-	-	-	-	6	-	-	Nelson, A…
humerus diameter	nan	mm	-	-	-	-	-	2	-	-	Nelson, A…
BMR,mlO2/h	nan	mlO2/h	9	9	-	-	-	101	-	-	Genoud, M…
BMR,mlO2/h	nan	mlO2/h	8	8	-	-	-	79	-	-	Genoud, M…
BMR,mlO2/h	nan	mlO2/h	7	7	-	-	-	45	-	-	Genoud, M…
BMR,mlO2/h	nan	mlO2/h	6	6	-	-	-	60	-	-	Genoud, M…
BMR,mlO2/h	nan	mlO2/h	6	6	-	-	-	67	-	-	Genoud, M…
BMR,mlO2/h	nan	mlO2/h	6	6	-	-	-	58	-	-	Genoud, M…
BMR,mlO2/h	nan	mlO2/h	4	4	-	-	-	38	-	-	Genoud, M…
BMR,mlO2/h	nan	mlO2/h	2	2	-	-	-	146	-	-	Genoud, M…

^b. other Measurements. Source Measurements which are not listed on or mapped with the Standard Traits..

Table 5. List of Data Sources for Spalacopus cyanus.
Taxon	Reference	Match	Status
Spalacopus cyanus	SAMUELS,J. X., 2009, Cranial morphology and dietary habits of rodents, Zoological Journal of the Linnean Society	1: Exact Taxon match	Verified - Accepted
Spalacopus cyanus	Cofre,H., 1999, Conservation status, rarity, and geographic priorities for conservation of Chilean mammals: an assessment, Biological Conservation	1: Exact Taxon match	Verified - Accepted
Scalacopus cyanus	Arends,A., 2001, The comparative energetics of Ã¢â‚¬ËœcaviomorphÃ¢â‚¬â„¢rodents, Comparative Biochemistry and Physiology-Part A: Molecular & Integrative Physiology	51: Name variant or misspelling of the taxon	Verified - Accepted
Spalacopus cyanus	Damuth, J. 2010. ABSOLUT 6 a mammalian database compiled by the national center for ecological analysis and synthesis (NCEAS ) workshop on mammalian communities.	1: Exact Taxon match	Verified - Accepted
Spalacopus cyanus	Nowak,R. M., 1991, Walker's mammals of the world,	1: Exact Taxon match	Verified - Accepted
Spalacopus cyanus	Grzimek,B., 2003, Grzimek's Animal Life Encyclopedia: Mammals I-V,	1: Exact Taxon match	Verified - Accepted
Spalacopus cyanus	Nowak,R. M., 1991, Walker's mammals of the world,	1: Exact Taxon match	Verified - Accepted
Spalacopus cyanus	McNab, B.K., 2008. An analysis of the factors that influence the level and scaling of mammalian BMR. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 151(1), pp.5-28.	1: Exact Taxon match	Verified - Accepted
Spalacopus cyanus	Nelson, A., Engelman, R.K. and Croft, D.A., 2023. How to weigh a fossil mammal? South American notoungulates as a case study for estimating body mass in extinct clades. Journal of Mammalian Evolution, 30(3), pp.773-809.	1: Exact Taxon match	Verified - Accepted
Spalacopus cyanus	Genoud, M., Isler, K. and Martin, R.D., 2018. Comparative analyses of basal rate of metabolism in mammals: data selection does matter. Biological Reviews, 93(1), pp.404-438.	1: Exact Taxon match	Verified - Accepted
Spalacopus cyanus	Freudenthal, M. and Martín-Suárez, E., 2013. Estimating body mass of fossil rodents. Scripta Geologica, 145, pp.1-513.	1: Exact Taxon match	Verified - Accepted

Citation for this page: [The MammalBase community 2026. / CC BY 4.0. http://doi.org/10.5281/zenodo.7462864 Spalacopus cyanus , Accessed 16th April 2026 at https://mammalbase.net/me/10091]