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

Author(s)
Batzli, George O. and Frank A Pitelka
Year
Article Title
Condition and diet of cycling populations of the California Vole, Microtus californicus
Volume
52
Issue
1
Pages
141-163
Start Page Number
141
Final Page
163
Review

Datapoints

Displaying 1 - 20 of 20 datapoints.
Species: California Vole (Microtus californicus)
Exposure Endpoint Type Endpoint Description Endpoint Value Sample Size Units Life Cycle Stage Specific Location Range California Counties Type
Dietary Composition composition of stomach contents 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%) 500 items/10 voles % Not Reported Richmond Field Station Contra Costa Exposure Factor Datasets
Clutch or Litter Size mean; early growing season 3.4 9 pups/litter Adult Richmond Field Station Contra Costa Exposure Factor Datasets
Population Density peak density Not Reported #/acre Both Adults and Juveniles Richmond Field Station and Russel Reservation 150-160 Contra Costa Exposure Factor Datasets
Clutch or Litter Size mean; height of growing season 5.2 13 pups/litter Adult Richmond Field Station Contra Costa Exposure Factor Datasets
Body Weight - Mean <25 g Juvenile Richmond Field Station and Russel Reservation Contra Costa Exposure Factor Datasets
Clutch or Litter Size mean; dry season 3.6 5 pups/litter Adult Richmond Field Station Contra Costa Exposure Factor Datasets
Body Weight - Mean >40 g Adult Richmond Field Station and Russel Reservation Contra Costa Exposure Factor Datasets
Clutch or Litter Size mean; early growing season 3.0 11 pups/litter Adult Russell Reservation Contra Costa Exposure Factor Datasets
Body Weight - Mean >35 g Adult Richmond Field Station and Russel Reservation Contra Costa Exposure Factor Datasets
Clutch or Litter Size mean; height of growing season 6.0 4 pups/litter Adult Russell Reservation Contra Costa Exposure Factor Datasets
Body Weight - Mean g Both Adults and Juveniles Richmond Field Station and Russel Reservation 26 - 40 Contra Costa Exposure Factor Datasets
Clutch or Litter Size mean; dry season 3.3 6 pups/litter Adult Russell Reservation Contra Costa Exposure Factor Datasets
Body Weight - Mean g Both Adults and Juveniles Richmond Field Station and Russel Reservation 26 - 35 Contra Costa Exposure Factor Datasets
Growth Rate change in body weight; instantaneous rate based on Brody 1945 Not Reported %/d Juvenile Richmond field station; Russell Reservation 0.4-3 Contra Costa Exposure Factor Datasets
Survival/ Mortality figure of seasonal changes in minimum survival rate see citation %/28d Both Adults and Juveniles Richmond Field Station and Russel Reservation Contra Costa Exposure Factor Datasets
Growth Rate change in body weight; instantaneous rate based on Brody 1945 Not Reported %/d Adult Richmond field station; Russell Reservation 0-1 Contra Costa Exposure Factor Datasets
Body Fat (total or %) figure of seasonal changes in body fat content see citation g/g dry lean wt Both Adults and Juveniles Richmond Field Station and Russel Reservation Contra Costa Exposure Factor Datasets
Growth Rate change in body weight; instantaneous rated based on Brody 1945 Not Reported %/d Adult Richmond field station; Russell Reservation 0-0.4 Contra Costa Exposure Factor Datasets
Time of Mating/ Laying breeding; > 50% in reproductive condition Sept/Oct. - May/June Adult Richmond Field Station and Russel Reservation Contra Costa Exposure Factor Datasets
Dietary Composition composition of stomach contents 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%) 		750 items/15 voles % Not Reported Richmond Field Station Contra Costa Exposure Factor Datasets
OEHHA California Office of Environmental Health Hazard Assessment