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| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Population Density | See citation Table 1 | Number/km2 | B | Both Adults and Juveniles | Naval Petroleum Reserve | See citation | Exposure Factor Datasets | |
| Survival/ Mortality | See citation | Survival | B | Both Adults and Juveniles | Naval Petroleum Reserve | See citation | Exposure Factor Datasets | |
| Clutch or Litter Size | See citation Table 6 | Pups/litter | B | Pup | Naval Petroleum Reserve | See citation | Exposure Factor Datasets | |
| Dietary Composition | Leporids: 44.1, kangaroo rats: 31.0, pocket mice: 1.2, antelope squirrels: 2.3, other rodents: 4.1, sheep: 0.8, birds: 2.5, snakes: 1.4, lizards: 0.1, orthopterans: 6.4, colopterans: 1.3, other arthropods: 0.1, other items: 6.9 | Frequency of occurrence | % | Both Adults and Juveniles | Naval Petroleum Reserve | 4393 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Error | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 2.69 | 0.3 | Pups/litter | B | Pup | Upper Chuckwalla Valley | 32 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Error | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Survival/ Mortality | 80 | Mortality | % | B | Upper Chuckwalla Valley | 56 | Exposure Factor Datasets | ||
| Survival/ Mortality | 2012-2013: pair formation: 0.868, pup-rearing: 0.944, dispersal: 1.000, annual: 0.752; 2013-2014: pair formation: 0.891, pup-rearing: 1.000, annual: 0.892 | Survival | 2012-2013: pair formation: 0.014, pup-rearing: 0.0.14, dispersal: 0.000, annual: 0.010; 2013-2014: pair formation: 0.023, pup-rearing: 0.000, annual: 0.017 | M | Adult | Upper Chuckwalla Valley | 56 | Exposure Factor Datasets | |
| Survival/ Mortality | 2012-2013: pair formation: 0.885, pup-rearing: 0.1.000, dispersal: 1.000, annual: 0.885; 2013-2014: pair formation: 0.836, pup-rearing: 0.923, annual: 0.772 | Survival | 2012-2013: pair formation: 0.0.033, pup-rearing: 0.000, dispersal: 0.0000, annual: 0.012; 2013-2014: pair formation: 0.0.028, pup-rearing: 0.019, annual: 0.022 | F | Adult | Upper Chuckwalla Valley | 56 | Exposure Factor Datasets | |
| Survival/ Mortality | 2012-2013: pair formation: 0.876, pup-rearing: 0..969, dispersal: 1.000, annual: 0.809; 2013-2014: pair formation: 0.864, pup-rearing: 0.9640, annual: 0.833 | Survival | 2012-2013: pair formation: 0.019, pup-rearing: 0.001, dispersal: 0.000, annual: 0.012; 2013-2014: pair formation: 0.019, pup-rearing: 0.011, annual: 0.014 | B | Adult | Upper Chuckwalla Valley | 56 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | human derived food items (12.2%), ground squirrel (67.8%), pocket gopher (3.9%), unident. rodent (5.0%), leporid (5.0%), bird (12.2%), insect (23.3%), other (2.2%) | frequency of occurrence in scats | % | Not Reported | Not Reported | Bakersfield, CA | 180 scats | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Survival/ Mortality | Survival rates of radiocollared foxes for 1990, 1991 | 0.4-.63 | Both Male and Female | Both Adults and Juveniles | extreme southern San Joaquin Valley | 57 foxes | Exposure Factor Datasets |
| Survival/ Mortality | Survival rates of radiocollared foxes for 1990, 1991 | 0.55-0.57 | Male | Adult | extreme southern San Joaquin Valley | 25 foxes | Exposure Factor Datasets |
| Survival/ Mortality | Survival rates of radiocollared foxes for 1990, 1991 | 0.27-0.86 | Female | Adult | extreme southern San Joaquin Valley | 32 foxes | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Dipodomus ingens (17%), Dipodomys sp. (14%), D. heermanni (10%), Unident. rodents (6%), Oedaleonotus enigma (66%), Pocalta ursinus (5%), Coniontis sp. (1%), Stenopelmatus (9%), grass (74%) | Percent occurrence in scats | % | Not Reported | Not Reported | 6 mi. east of Panoche | 74 scats (1 den) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Dietary Composition | Review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets | ||
| Population Density | 1 | estimated average density based on censuses and literature values | fox/2.8 mi2 | Both Male and Female | Adult | 108 dens | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | approximate range of individual foxes | 1-2 | mi2 | Both Male and Female | Adult | Buena Vista Valley | 12 foxes | Exposure Factor Datasets | |
| Body Weight - Mean | range of monthly averages (Jan.-Dec.) | 3.8-5.5 | lbs | Male | Adult | Buena Vista Valley | 1-4 foxes/month | Exposure Factor Datasets | |
| Body Weight - Mean | range of monthly averages (Jan.-Dec.) | 4.4-5.6 | lbs | Female | Adult | Buena Vista Valley | 1-5 foxes/month | Exposure Factor Datasets | |
| Growth Rate | growth rate observed in repeatedly trapped pups | 0.75-1 | lb/month | Both Male and Female | Pup | Buena Vista Valley | Not Reported | Exposure Factor Datasets | |
| Clutch or Litter Size | 3-5 | pups | Female | Adult | Buena Vista Valley | 5 litters | Exposure Factor Datasets | ||
| Time of Hatching or Parturition | February-March | Female | Adult | Buena Vista Valley | Not Reported | Exposure Factor Datasets | |||
| Dietary Composition | Kangaroo rats (80.7%), rabbits (46.2%), squirrels (9.6%), cottontails (5.8%), pocket mouse (1.9%), unident. insects (59.6%), scorpions (17.3%), Jerusalem crickets (13.5%), insect larvae (11.5%), ants (9.6%), grasshoppers (5.8%), beetles (3.8%), spiders (1.9%) | frequency of occurrence in scat analyses | % | Both Male and Female | Not Reported | 52 scat groups | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | insects (1.3%), Hermann's kangaroo rat (19.6%), California vole (31.5%), deer mouse (14.4%), California ground squirrel (24.4%), Audubon's cottontail (12.0%), unident. plant material (0.7%) | relative composition of prey remains in scat | % | Both Male and Female | Both Adults and Juveniles | Kesterson National Wildlife Refuge | 25 scats | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|
| Population Density | see citation | figures showing seasonal abundance and density counts | Both Male and Female | Both Adults and Juveniles | 1,239 surveys (dry season); 883 surveys (wet season) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Error | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Home Range | 1.61 | denning range, based on observations of marked individuals at dens | 0.20 SE | km2 | Both Male and Female | Adult | south San Joaquin Valley | 26 | Exposure Factor Datasets | |
| Home Range | 5.82 | nocturnal range, based on noctural locations of marked individuals | 0.45 SE | km2 | Both Male and Female | Adult | south San Joaquin Valley | 26 | Exposure Factor Datasets | |
| Home Range | 6.13 | based on all observations of marked individuals | 0.45 SE | 1.69-11.18 | km2 | Both Male and Female | Adult | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Error | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 1.9 | calculated with Minimum Area Method | 1.1 SD | km2 | Male | Adult | Pine Valley | 4 | Exposure Factor Datasets |
| Home Range | 1.4 | calculated with Minimum Area Method | 0.7 SD | km2 | Female | Adult | Pine Valley | 4 | Exposure Factor Datasets |
| Home Range | 4.2 | calculated with Minimum Area Method | 1.5 SD | km2 | Male | Adult | Pine Valley | 5 | Exposure Factor Datasets |
| Home Range | 1.9 | calculated with Minimum Area Method | 1.2 SD | km2 | Female | Adult | Pine Valley | 4 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Population Density | population density on 10,359.9 ha study area | 470.9-1035.9 | ha/fox | Both Male and Female | Adult | western Utah | foxes 9-22 | Exposure Factor Datasets |
| Clutch or Litter Size | range of mean litter sizes over four years | 2.75-5 | pups | Female | Adult | western Utah | 2-6 litters/year | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 1820 | mean annual body weight | g | Both Male and Female | Adult | 20 foxes | Exposure Factor Datasets |
| Metabolic Rate | 0.0034 | summer basal metabolic rate | watts/g | Both Male and Female | Adult | 12 foxes | Exposure Factor Datasets |
| Metabolic Rate | 0.0028 | winter basal metabolic rate | watts/g | Both Male and Female | Adult | 12 foxes | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Population Density | 4 | mean number of pairs on study area | 1-5 | pairs/207 km^2 | Both Male and Female | Adult | Not Reported | Exposure Factor Datasets |
| Population Density | 1 | mean animal density in study area | adult/12.9 km^2 | Both Male and Female | Adult | Not Reported | Exposure Factor Datasets | |
| Clutch or Litter Size | 2.5 | mean litter size | 2-4 | pups | Female | Adult | 8 litters | Exposure Factor Datasets |
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