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

Author(s)

Batzli, George O. and Frank A Pitelka

Year

Fri, 01/01/1971 - 12:00

Article Title

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

Volume

Issue

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

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