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Spermophilus beecheyi (California Ground Squirrel)

Citation:

Olfactory bulb uptake and determination of biotransfer factors in the California ground squirrel (Spermophilus beecheyi) exposed to manganese and cadmium in environmental habitats.

Author(s)
Bench, G., Carlsen, T.M., Grant, P.G., Wollett, J.S., Martinelli, R.E., Lewis, J.L. and Divine, K.K
Issue
2
Volume
35
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Inhalation Rate 0.4 Air intake m3/d M Yearling Altamont Hills 7 Exposure Factor Datasets
Citation:

Size increase in high elevation ground squirrels over the last century.

Author(s)
Eastman, L.M., Morelli, T.L., Rowe, K.C., Conroy, C.J. and Moritz, C.
Issue
5
Volume
18
Exposure Endpoint Type Endpoint Value Error Sample Size Type
Body Weight - Mean Historical: 551.97, modern: 527.09 Historical: 124.77, modern: 126.93 Historical: 117, modern: 55 Exposure Factor Datasets

Spermophilus beecheyi

Citation:

Energy requirements and diet of the California ground squirrel

Author(s)
Schitoskey, Frank, Jr. and Sarah R. Woodmansee
Pages
373-382
Year
Issue
2
Volume
42
Exposure Endpoint Type Endpoint Value Endpoint Description Error Units Sex Life Cycle Stage Location Sample Size Type
Metabolic Rate 0.75 resting oxygen consumption at 25-28C 0.21 SE ml O2/g/ h Both Male and Female Adult captured at San Joaquin Experimental Range 26 Exposure Factor Datasets
Citation:

Ecology of the California ground squirrel on grazing lands

Author(s)
Fitch, Henry S.
Pages
559-596
Year
Volume
39
Exposure Endpoint Type Endpoint Value Endpoint Description Range Units Sex Life Cycle Stage Location Sample Size Type
Food Ingestion Rate 22.5 12.4 - 31.1 g dry wheat/squirrel x day Both Male and Female Both Adults and Juveniles 9 animals Exposure Factor Datasets
Body Weight - Mean range of monthly mean weights over 4 yrs 483.8 - 552.5 g Female Adult San Joaquin Experimental Range 5 - 58/mo Exposure Factor Datasets
Body Weight - Mean range of monthly mean weights over 4 yrs 560 - 764.8 g Male Adult San Joaquin Experimental Range 4 - 63/mo Exposure Factor Datasets
Body Weight - Mean 8.9 weight at birth g Not Reported Juvenile 6 litters (42 animals) Exposure Factor Datasets
Population Density 2.3 five year average #/acre Both Male and Female Adult San Joaquin Experimental Range 275 Exposure Factor Datasets
Body Weight - Mean 100 weight of young at first appearance above ground g Not Reported Juvenile San Joaquin Experimental Range Not Reported Exposure Factor Datasets
Citation:

Multiple litters in the California ground squirrel, Spermophilus beecheyi fisheri, in Tulare county

Author(s)
Simpson, G. L., and T.K. Lamunyon
Pages
101-104
Year
Volume
9
Exposure Endpoint Type Endpoint Value Range Units Sex Life Cycle Stage Location Sample Size Type
Clutch or Litter Size 8.5 - 9.7 embryos/female Female Adult Coho creek Not Reported Exposure Factor Datasets
Time of Mating/ Laying Feb. - Apr. Both Male and Female Adult Coho creek Not Reported Exposure Factor Datasets
Citation:

Seasonal variation in body weight, fat, and behaviour of California ground squirrels (Spermophilus beecheyi)

Author(s)
Holekamp, Kay E. and Scott Nunes
Pages
1425-1433
Year
Issue
6
Volume
67
Exposure Endpoint Type Endpoint Value Error Range Units Sex Life Cycle Stage Location Sample Size Type
Clutch or Litter Size 6.7 0.3 SE young/litter Female Adult University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] 26 Exposure Factor Datasets
Clutch or Litter Size 7.9 0.3 SE young/litter Female Adult University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] 47 Exposure Factor Datasets
Body Weight - Mean 526 6 SE g Female Adult University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] 233 Exposure Factor Datasets
Body Weight - Mean 589 12 SE g Female Adult University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] 41 Exposure Factor Datasets
Body Weight - Mean 571 6 SE g Female Adult University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] 100 Exposure Factor Datasets
Body Weight - Mean 814 22 SE Male Adult University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] 56 Exposure Factor Datasets
Body Weight - Mean 707 5 SE g Male Adult University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] 306 Exposure Factor Datasets
Citation:

Home range, population structure, and spatial organization of California ground squirrels

Author(s)
Boellstorff, Diane E. and Donald H. Owings
Pages
551-561
Year
Issue
2
Volume
76
Exposure Endpoint Type Endpoint Value Endpoint Description Range Units Sex Life Cycle Stage Location Sample Size Type
Home Range range of means for 2 yrs 615 - 902 m2 Female Adult Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] 0-12/yr Exposure Factor Datasets
Home Range range of means for 2 yrs 313.3 - 375.9 m2 Male Adult Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] 11/yr Exposure Factor Datasets
Home Range 309.3 41.4 SE m2 Male Adult Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] 21 Exposure Factor Datasets
Home Range 270 41.2 SE m2 Male Adult Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] 12 Exposure Factor Datasets
Population Density range of means for 2 yrs 70.4 - 92.5 #/ha Both Male and Female Adult Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] Not Reported Exposure Factor Datasets
Citation:

Hibernation and sociality in the California ground squirrel

Author(s)
Dobson, F. Stephen and David E. Davis
Pages
416-421
Year
Issue
2
Volume
67
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Location Sample Size Type
Age at Sexual Maturity 9-10 mo Both Male and Female Juvenile Santa Barbara; Bell Ranch; Hastings Reservation Not Reported Exposure Factor Datasets
Citation:

A population study of the Beechey ground squirrel in central California

Author(s)
Evans, F. C. and R. Holdenried
Pages
231-260
Year
Issue
2
Volume
24
Exposure Endpoint Type Endpoint Value Range Units Sex Life Cycle Stage Location Sample Size Type
Time of Molt May Both Male and Female Adult Calaveras Reservoir Not Reported Exposure Factor Datasets
Population Density 7 #/acre Both Male and Female Both Adults and Juveniles Calaveras Reservoir Not Reported Exposure Factor Datasets
Clutches or Litters per year 1 litters/yr Female Adult Calaveras Reservoir Not Reported Exposure Factor Datasets
Clutch or Litter Size 6.25 2 - 9 young/litter Female Adult Calaveras Reservoir 8 litters Exposure Factor Datasets
Citation:

California ground squirrels at Concord Naval Weapons station: alternatives for control and the ecological consequences

Author(s)
Loredo-Prenderville, I., D. Van Vuren , Amy J. Kuenzi, and Michael Morrison
Pages
72-77
Publisher
University of California, Davis
Year
Volume
16
Exposure Endpoint Type Endpoint Value Error Range Units Sex Life Cycle Stage Location Sample Size Type
Population Density 32.0 16.23 SD 8.6-52.1 #/ha Not Reported Adult Concord Naval Weapons Station 5 study sites Exposure Factor Datasets
Citation:

Natural history of the ground squirrels of California

Author(s)
Grinnel, J. and J.S. Dixon
Pages
597-708
Year
Volume
7
Exposure Endpoint Type Endpoint Value Endpoint Description Range Units Sex Life Cycle Stage Location Sample Size Type
Body Weight - Mean 696 600-923 g Male Adult 10 Exposure Factor Datasets
Body Weight - Mean 592 491-774 g Female Adult 10 Exposure Factor Datasets
Population Density 76 #/acre Not Reported Not Reported Walnut Creek 3 counts Exposure Factor Datasets
Population Density 20 #/acre Not Reported Not Reported Walnut Creek 3 counts Exposure Factor Datasets
Clutches or Litters per year 1 litter/yr Female Adult Not Reported Exposure Factor Datasets
Clutch or Litter Size based on embryo counts 4 - 11 young/litter Female Adult Not Reported Exposure Factor Datasets
Body Weight - Mean 61 g Not Reported Juvenile 1 Exposure Factor Datasets
Longevity 5 yrs Not Reported Adult Not Reported Exposure Factor Datasets
Citation:

Patterns of progesterone secretion in free-living California ground squirrels (Spermophilus beecheyi)

Author(s)
Holekamp, K.E., S. Nunes and F. Talamantes
Pages
1051-1059
Year
Issue
5
Volume
39
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Location Sample Size Type
Duration of Incubation or Gestation 28-30 d Female Adult University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] 128 Exposure Factor Datasets
Age at Fledging, Metamorphosis, Weaning 5-6 wks Not Reported Juvenile University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] Not Reported Exposure Factor Datasets
Time of Torpor or Hibernation May/June - Oct. months of estivation Male Adult University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] 144 Exposure Factor Datasets
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