MammalBase - Accepted taxon: Spermophilus beecheyi

Accepted taxon: Spermophilus beecheyi
Taxon:	Spermophilus beecheyi
Rank:	Species
Higher Classification:	RODENTIA \| SCIUROMORPHA \| Sciuridae \| Xerinae \| Marmotini \| Spermophilus \| Otospermophilus
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 Spermophilus beecheyi diet.
CF (Crude Fibre) 14, ASH (Ash contents) 6, NFE (Nitrogen-Free-Extract) 55, CP (Crude Protein) 16, EE (Ether Extract) 8. 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 Spermophilus beecheyi.
TSN Complete name	Part	Ratio ^a.	Reference(s)
Magnoliopsida	SHOOT	24.29	Damuth, J…
Magnoliopsida	SEED	20.79	Damuth, J…
Fagaceae	SEED	17.30	Damuth, J…
Magnoliopsida	FRUIT	17.14	Damuth, J…
Fungi	SHOOT	13.81	Damuth, J…
Aves	WHOLE	3.33	Reid,F., …
Vertebrata	EGGS	2.22	Reid,F., …
Insecta	WHOLE	1.11	Reid,F., …

^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 Spermophilus beecheyi.
Trait	Selected Value	All Value(s)	Reference(s)
Locomotion: Eisenberg 1981	Semifossorial	Semifossorial, Terrestrial	– 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, Virginia Hayssen, 2008, 'Patterns of Body and Tail Length and Body Mass in Sciuridae', Journal of Mammalogy, vol. 89, no. 4, pp. 852-873

Table 3. List of Standard Measurements for Spermophilus beecheyi.
Measurement	Location	Unit	n Total	n Unknown	n Female	n Male	Min	Mean	Max	SD	Reference(s)
Body Mass (BM)	nan	g	-	-	-	-	250	-	885	-	Freudenth…

Table 4. List of other Measurements ^b. for Spermophilus beecheyi.
Measurement	Location	Unit	n Total	n Unknown	n Female	n Male	Min	Mean	Max	SD	Reference(s)
BMR (kJ/h)	nan	kJ/h	-	-	-	-	-	6	-	-	McNab, B.…

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

Table 5. List of Data Sources for Spermophilus beecheyi.
Taxon	Reference	Match	Status
Spermophilus beecheyi	Hayssen,V., 2008, Patterns of body and tail length and body mass in Sciuridae, Journal of mammalogy	1: Exact Taxon match	Verified - Accepted
Spermophilus beecheyi	Samuels,J. X., 2008, Skeletal indicators of locomotor adaptations in living and extinct rodents, Journal of Morphology	1: Exact Taxon match	Verified - Accepted
Spermophilus beecheyi	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
Spermophilus beecheyi	Samuels, Joshua X., and Blaire Van Valkenburgh. Ã¢â‚¬Å“Skeletal Indicators of Locomotor Adaptations in Living and Extinct Rodents.Ã¢â‚¬Â J. Morphol. 269, no. 11 (November 2008): 1387Ã¢â‚¬â€œ1411. doi:10.1002/jmor.10662.	1: Exact Taxon match	Verified - Accepted
Citellus beecheyi	Reid,F., 2006, Peterson field guide to mammals of North America,	150: Genus synonym, same species epithet	Verified - Accepted
Spermophilus beecheyi	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
Spermophilus beecheyi	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 Spermophilus beecheyi , Accessed 24th June 2026 at https://mammalbase.net/me/7140]