California Vole (Microtus californicus)
California Vole (Microtus californicus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties |
|---|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | change in body weight; instantaneous rate based on Brody 1945 | %/d | Both Male and Female | Adult | Not Reported | Richmond field station; Russell Reservation | Exposure Factor Datasets | subadult | Contra Costa | |
| Growth Rate | change in body weight; instantaneous rated based on Brody 1945 | %/d | Male | Adult | Not Reported | Richmond field station; Russell Reservation | Exposure Factor Datasets | Contra Costa | ||
| 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 | 750 items/15 voles | Richmond Field Station | Exposure Factor Datasets | Contra Costa |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Sample Size | Location | Type | Age-Specific | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 485 | metabolizable energy; equivalent to average daily metabolic rate | cal/g/d | Not Reported | 8 | Exposure Factor Datasets | 28 d or older | 16 SE | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Clutches or Litters per year | 0.3 | litters per female per 12 wks | litters/12 wks | Female | Adult | 12 | Exposure Factor Datasets | subadult (4 wks) | 0.2 SE | Laboratory | |
| Clutch or Litter Size | 3.3 | young/litter | Female | Adult | 12 | Exposure Factor Datasets | 0.4 SE | Laboratory | |||
| Clutches or Litters per year | 1.0 | litters per female per 12 wks | litters/12 wks | Female | Adult | 12 | Exposure Factor Datasets | 0.2 SE | Laboratory |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | range of means for 2 yrs | young/litter | Female | Adult | 11/yr | Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] | Exposure Factor Datasets | Alameda |
| Exposure Endpoint Type | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
|---|---|---|---|---|---|---|---|
| Survival/ Mortality | range of mean minimum survival rates per 14 d | Male | Juvenile | 2 periods of weekly sampling | Tilden Regional Park | Exposure Factor Datasets | "subadults" (26-39 g) |
| Survival/ Mortality | range of mean minimum survival rates per 14 d | Male | Juvenile | 2 periods of weekly sampling | Tilden Regional Park | Exposure Factor Datasets | |
| Survival/ Mortality | range of mean minimum survival rates per 14 d | Female | Adult | 2 periods of weekly sampling | Tilden Regional Park | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Condition |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | > 45 | g | Male | Adult | Not Reported | Richmond Field Station | Exposure Factor Datasets | Contra Costa | breeding |
| Body Weight - Mean | > 40 | g | Female | Adult | Not Reported | Richmond Field Station | Exposure Factor Datasets | Contra Costa | breeding |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
|---|---|---|---|---|---|---|---|---|
| Survival/ Mortality | .574 | minimum survival rate per 2 wks | Male | Adult | 8 breeding seasons (6 populations pooled) | Berkeley | Exposure Factor Datasets | breeding season |
| Survival/ Mortality | .635 | minimum survival rate per 2 wks | Male | Adult | 8 breeding seasons (6 populations pooled) | Berkeley | Exposure Factor Datasets | breeding season |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 25.8 | median weight at sexual maturity | g | Male | Adult | 33 | Sea Ranch | Exposure Factor Datasets | Sonoma |
| Body Weight - Mean | 24.4 | median weight at sexual maturity | g | Female | Adult | 30 | Sea Ranch | Exposure Factor Datasets | Sonoma |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Inhalation Rate | 297 (10C); 238 (20C); 137 (30C) | inhalation rates at ambient temperatures (10-30C) | ml/min | Not Reported | Not Reported | 6/group | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|
| Population Density | #/ha | Not Reported | Not Reported | Not Reported | San Pablo salt marsh | Exposure Factor Datasets | Contra Costa |
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