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Microtus californicus

Citation:

Intraspecific litter size variation in Microtus californicus II. variation between populations

Author(s)
Krohne, David T.
Pages
1174-1182
Year
Issue
6
Volume
34
Exposure Endpoint Type Endpoint Value Endpoint Description Error Range Units Sex Life Cycle Stage Location Sample Size Type
Clutch or Litter Size 5.23 inhabiting annual grassland enclosure 0.33 SE 1-10 pups/litter Female Adult captured in Contra Costa County, CA 42 Exposure Factor Datasets
Body Weight - Mean 25.8 median weight at sexual maturity g Male Adult Sea Ranch 33 Exposure Factor Datasets
Body Weight - Mean 24.4 median weight at sexual maturity g Female Adult Sea Ranch 30 Exposure Factor Datasets
Body Weight - Mean 20.4 median weight at sexual maturity g Female Adult Orinda, Layfayette, Russell Reservation 69 Exposure Factor Datasets
Body Weight - Mean 30.4 median weight at sexual maturity g Male Adult Orinda, Layfayette, Russell Reservation 56 Exposure Factor Datasets
Citation:

Condition and diet of cycling populations of the California Vole, Microtus californicus

Author(s)
Batzli, George O. and Frank A Pitelka
Pages
141-163
Year
Issue
1
Volume
52
Exposure Endpoint Type Endpoint Value Endpoint Description Error Range Units Sex Life Cycle Stage Location Sample Size Type
Clutch or Litter Size 3.4 mean; early growing season 0.9 (95%CI) pups/litter Female Adult Richmond Field Station 9 Exposure Factor Datasets
Clutch or Litter Size 5.2 mean; height of growing season 0.8 (95%CI) pups/litter Female Adult Richmond Field Station 13 Exposure Factor Datasets
Clutch or Litter Size 3.6 mean; dry season 0.7 (95%CI) pups/litter Female Adult Richmond Field Station 5 Exposure Factor Datasets
Clutch or Litter Size 3.0 mean; early growing season 0.8 (95%CI) pups/litter Female Adult Russell Reservation 11 Exposure Factor Datasets
Clutch or Litter Size 6.0 mean; height of growing season 1.3 (95%CI) pups/litter Female Adult Russell Reservation 4 Exposure Factor Datasets
Clutch or Litter Size 3.3 mean; dry season 1.1 (95%CI) pups/litter Female Adult Russell Reservation 6 Exposure Factor Datasets
Growth Rate change in body weight; instantaneous rate based on Brody 1945 0.4-3 %/d Both Male and Female Juvenile Richmond field station; Russell Reservation Not Reported Exposure Factor Datasets
Growth Rate change in body weight; instantaneous rate based on Brody 1945 0-1 %/d Both Male and Female Adult Richmond field station; Russell Reservation Not Reported Exposure Factor Datasets
Growth Rate change in body weight; instantaneous rated based on Brody 1945 0-0.4 %/d Male Adult Richmond field station; Russell Reservation Not Reported Exposure Factor Datasets
Dietary Composition grass heads (1.3%); grass leaves (78.9%); grass stems (9.2%); grass roots (0.3%); Forb leaves (9.3%); Forb stems (0.4%); Forb roots (0.1%); Vole hair (0.4%) composition of stomach contents % Not Reported Not Reported Richmond Field Station 750 items/15 voles Exposure Factor Datasets
Dietary Composition grass heads (72.6%); grass leaves (4.2%); grass stems (2.0%); grass roots (0.4%); Forb leaves (15.4%); Forb stems (2.6%); Forb roots (2.0%); vole hair (0.8%) composition of stomach contents % Not Reported Not Reported Richmond Field Station 500 items/10 voles Exposure Factor Datasets
Population Density peak density 150-160 #/acre Both Male and Female Both Adults and Juveniles Richmond Field Station and Russel Reservation Not Reported Exposure Factor Datasets
Body Weight - Mean <25 g Both Male and Female Juvenile Richmond Field Station and Russel Reservation Exposure Factor Datasets
Body Weight - Mean >40 g Male Adult Richmond Field Station and Russel Reservation Exposure Factor Datasets
Body Weight - Mean >35 g Female Adult Richmond Field Station and Russel Reservation Exposure Factor Datasets
Body Weight - Mean 26 - 40 g Male Both Adults and Juveniles Richmond Field Station and Russel Reservation Exposure Factor Datasets
Body Weight - Mean 26 - 35 g Female Both Adults and Juveniles Richmond Field Station and Russel Reservation Exposure Factor Datasets
Survival/ Mortality see citation figure of seasonal changes in minimum survival rate %/28d Both Male and Female Both Adults and Juveniles Richmond Field Station and Russel Reservation Exposure Factor Datasets
Body Fat (total or %) see citation figure of seasonal changes in body fat content g/g dry lean wt Both Male and Female Both Adults and Juveniles Richmond Field Station and Russel Reservation Exposure Factor Datasets
Time of Mating/ Laying Sept/Oct. - May/June breeding; > 50% in reproductive condition Both Male and Female Adult Richmond Field Station and Russel Reservation Exposure Factor Datasets
Citation:

Territoriality and mating system of California voles

Author(s)
Ostfeld, Richard S.
Pages
691-706
Year
Volume
55
Exposure Endpoint Type Endpoint Value Endpoint Description Error Range Units Sex Life Cycle Stage Location Sample Size Type
Population Density range in mean density for 2 yr 45 - 374 #/ha Both Male and Female Adult Richmond Field Station Exposure Factor Datasets
Home Range range in home range (minimum area probability, 0.95) over 2 yrs 85 - 116 m2 Female Adult Richmond Field Station 7/yr Exposure Factor Datasets
Home Range range in home range (minimum area probability, 0.95) over 2 yrs 128 - 231 m2 Male Adult Richmond Field Station 4-7/yr Exposure Factor Datasets
Home Range 87.5 estimated by minimum area probability (0.95) method 1.5 SE m2 Male Adult Richmond Field Station 2 Exposure Factor Datasets
Citation:

Analysis of two freely-growing enclosed populations of the California vole

Author(s)
Lidicker, William Z.
Pages
447-466
Year
Issue
3
Volume
60
Exposure Endpoint Type Endpoint Description Range Units Sex Life Cycle Stage Sample Size Type
Clutch or Litter Size 2-9 pups/litter Female Adult 35 females Exposure Factor Datasets
Body Weight - Mean range of means measured in voles in enclosures in different seasons 32.4 - 78.7 g Male Adult 5-35/sample Exposure Factor Datasets
Body Weight - Mean range of means measured in voles in enclosures in different seasons 35.3 - 75.8 g Female Adult 5-45/sample Exposure Factor Datasets
Citation:

Nutritional ecology of microtine rodents: digestibility of forage

Author(s)
Batzli, G. O., and F. Russell Cole
Pages
740-750
Year
Issue
4
Volume
60
Exposure Endpoint Type Endpoint Value Endpoint Description Error Units Sex Sample Size Type
Food Ingestion Rate 897 ingested energy; fed rabbit pellets for 21 d 28 SE cal/g/d Not Reported 5 Exposure Factor Datasets
Food Ingestion Rate 1115 ingested energy; fed bromegrass for 21 d 35 SE cal/g/d Not Reported 7 Exposure Factor Datasets
Food Ingestion Rate 693 ingested energy; fed ryegrass seeds for 21 d 22 SE cal/g/d Not Reported 8 Exposure Factor Datasets
Metabolic Rate 450 metabolizable energy; equivalent to average daily metabolic rate 16 SE cal/g/d Not Reported 5 Exposure Factor Datasets
Metabolic Rate 504 metabolizable energy; equivalent to average daily metabolic rate 28 SE cal/g/d Not Reported 7 Exposure Factor Datasets
Metabolic Rate 485 metabolizable energy; equivalent to average daily metabolic rate 16 SE cal/g/d Not Reported 8 Exposure Factor Datasets
Citation:

Selenium accumulation in mammals exposed to contaminated California irrigation drainwater

Author(s)
Clark Jr., Donald R.
Pages
147-168
Year
Volume
66
Exposure Endpoint Type Endpoint Value Range Units Sex Life Cycle Stage Location Sample Size Type
Clutch or Litter Size 4.2 2 - 5 pups/litter Female Adult Volta 12 Exposure Factor Datasets
Citation:

Nutritional ecology of the California vole: Effects of food quality on reproduction

Author(s)
Batzli, George O.
Pages
406-412
Year
Issue
2
Volume
67
Exposure Endpoint Type Endpoint Value Error Units Sex Life Cycle Stage Sample Size Type
Clutch or Litter Size 3.5 0.6 SE young/litter Female Adult 12 Exposure Factor Datasets
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