Carnivores (Carnivora)
Sea Otter (Enhydra lutris)
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Survival/ Mortality | annual mortality over two years estimated from carcass searches on beaches | % | Both Male and Female | Both Adults and Juveniles | 1 population (1076 otters) | Amchitka Island | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 3.7 | km^2 | Both Male and Female | Adult | 11 | Santa Cruz to San Luis Obispo | Exposure Factor Datasets | Residents | 3.1 SD |
| Home Range | 0.8 | km^2 | Male | Adult | 3 | Santa Cruz to San Luis Obispo | Exposure Factor Datasets | Residents | 0.8 SD |
| Home Range | 4.7 | km^2 | Female | Adult | 8 | Santa Cruz to San Luis Obispo | Exposure Factor Datasets | Residents | 2.9 SD |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 80 | ha | Female | Adult | 8 | Monterey | Exposure Factor Datasets | Monterey | 19.04 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | pismo clams (559), unidentified bivalves (1), rock crabs (1), market crabs (1), unidentified crabs (1), unidentied food items (15) | number of prey retreived, based on observations from shore | Not Reported | Not Reported | 578 observed retrievals | Pismo Beach | Exposure Factor Datasets | San Luis Obispo |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | December to February | peak period of birth | Female | Adult | Not Reported | Point Lobos State Reserve to Lucia | Exposure Factor Datasets | Monterey |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties |
|---|---|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 198 | d | Female | Adult | 53 | Monterey Bay | Exposure Factor Datasets | > 3 years | Monterey | |
| Fledging or Weaning Rate | 0.4 | pre-weaning survival rate (mothers aged 3-6 years) | Female | Adult | 5 | Monterey Bay | Exposure Factor Datasets | 3-6 years | Monterey |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 0.72 | average basal metabolism in air | cc O2/g x hr | Not Reported | Not Reported | 10 | Exposure Factor Datasets | fasted | 0.06 | Laboratory | |
| Metabolic Rate | 0.85 | average basal metabolic rate in water | cc O2/g x hr | Not Reported | Not Reported | 13 | Exposure Factor Datasets | fasted | Laboratory |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of body weights | kg | Female | Adult | 2 otters | near Monterey | Exposure Factor Datasets | Monterey |
| Duration of Incubation or Gestation | range of estimated gestation period, based on observations | mo | Female | Adult | 2 otters | near Monterey | Exposure Factor Datasets | Monterey |
California Sea Lion (Zalophus californianus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 7.59 | kg | Female | Pup | 7 | San Nicolas Island | Exposure Factor Datasets | 5 d | 0.289 SE | |
| Body Weight - Mean | 10.32 | kg | Male | Pup | 7 | San Nicolas Island | Exposure Factor Datasets | 30 d | 0.715 SE | |
| Growth Rate | 144.1 | daily weight gain during 1st mo of life | g/d | Male | Pup | 7 | San Nicolas Island | Exposure Factor Datasets | 5-30 d | 16.13 SE |
| Growth Rate | 120.0 | daily weight gain during 1st mo of life | g/d | Female | Pup | 7 | San Nicolas Island | Exposure Factor Datasets | 5-30 d | 8.16 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 4.2 | initial defecation time | hours | Both Male and Female | Adult | 3 animals | Exposure Factor Datasets | 1-2 years old | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 32.2 | kg | Both Male and Female | Juvenile | 6 | Exposure Factor Datasets | 1.6 SE | Laboratory | ||
| Metabolic Rate | 5.1 | resting metabolic rate | ml O2/min/kg | Both Male and Female | Juvenile | 6 | Exposure Factor Datasets | 0.4 SE | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 9 | kg | Not Reported | Neonate | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
|---|---|---|---|---|---|---|---|---|
| Territory Size | 130 | m2 | Male | Adult | 24-25 males | San Nicolas Island, CA | Exposure Factor Datasets | breeding |
| Time of Hatching or Parturition | May/June | Not Reported | Pup | 127 pups | San Nicolas Island | Exposure Factor Datasets | ||
| Time of Mating/ Laying | June/July | Both Male and Female | Adult | not reported | San Nicolas Island, CA | Exposure Factor Datasets | breeding |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Longevity | 28 | captive longevity record | yrs | Not Reported | Adult | Not Reported | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | range of mean field metabolic rates estimated by oxygen consumption using direct respirometry and doubly labelled water methods; exercise regime used to simulate swimming | ml O2/min/kg | Both Male and Female | Juvenile | 6 | Exposure Factor Datasets | 1 yr | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Foraging Distance | 54.2 | km | Female | Adult | 9 | Adams Cove, San Miguel Island [lat., 34^o01'55"N; long., 120^o26'25" W] | Exposure Factor Datasets | post-partum | 32.4 SD | |
| Dietary Composition | northern anchovy (65%); Pacific Whiting (52%); market squid (13%) | % occurrence of most frequent prey in scats | % | Female | Adult | 23 animals | Adams Cove, San Miguel Island [lat., 34^o01'55"N; long., 120^o26'25" W] | Exposure Factor Datasets | post-partum |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of mean weights taken over 5 yrs at 2 sites | kg | Female | Pup | 41 - 151/yr | San Miguel and San Clemente Islands | Exposure Factor Datasets | 4 mo |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 12,000 | g | Both Male and Female | Pup | 39 | captured at San Nicolas Island, CA | Exposure Factor Datasets | 3-5 wks | 231 SE | Laboratory | |
| Metabolic Rate | 0.78 | resting metabolic rate measured over a range of ambient temperatures (16-25C) | ml O2/g/hr | Both Male and Female | Pup | 39 | captured at San Nicolas Island, CA | Exposure Factor Datasets | 3-5 wks | 0.10 | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Pacific whiting (48.7%); market squid (46.7%); juvenile rockfish (35.9%); northern anchovy (20.0%); red octopus (9.7%); jack mackerel (4.6%); nail squid (4.6%); squid (4.1%);chub mackerel (3.6%); Pacific pompano (2.5%); California lantern fish (2.5%) | % occurrence of major prey (>1%) in scats | % | Both Male and Female | Both Adults and Juveniles | 224 scats | San Miguel Island | Exposure Factor Datasets |
San Joaquin Kit Fox (Vulpes macrotis ssp. mutica)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| 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 | Kern |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Jerusalem crickets (27%), unident. birds (2%), rabbits (3%), California ground squirrel (35%), pocket mice (2%), western harvest mice (17%), Peromyscus sp. (13%) | percent volume of total prey items in scat | % | Both Male and Female | Not Reported | 10 scats | Bethany Reservoir | Exposure Factor Datasets | Alameda |
| Dietary Composition | Jerusalem crickets (1%), unident. reptiles (1%), unident. birds (1%), rabbits (5%), California ground squirrel (62%), pocket mice (5%), western harvest mice (10%), Peromyscus sp. (11%) | percent volume of total prey items in scat | % | Both Male and Female | Not Reported | 10 scats | Bethany Reservoir | Exposure Factor Datasets | Alameda |
| Dietary Composition | Jerusalem crickets (20%), unident. insects (4%), unident. birds (10%), desert cottontail (1%), rabbits (5%), California ground squirrel (27%), pocket mice (13%), western harvest mice (9%), Peromyscus sp. (9%), unident. cricetid rodents (5%) | percent volume of total prey items in scat | % | Both Male and Female | Not Reported | 10 scats | Bethany Reservoir | Exposure Factor Datasets | Alameda |
| Dietary Composition | unident. vegetation (4%), California ground squirrel (83%), California pocket mice (2%), Peromyscus sp. (5%), unident. cricetid rodents (5%) | percent volume of total prey items in scat | % | Both Male and Female | Not Reported | 10 scats | Bethany Reservoir | Exposure Factor Datasets | Alameda |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| 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 | 25 scats | Kesterson National Wildlife Refuge | Exposure Factor Datasets | Merced |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| 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 | Kern, San Luis Obispo |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| 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 | 180 scats | Bakersfield, CA | Exposure Factor Datasets | Kern |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Home Range | 1.61 | denning range, based on observations of marked individuals at dens | km2 | Both Male and Female | Adult | 26 | south San Joaquin Valley | Exposure Factor Datasets | Kern | 0.20 SE |
Kit Fox (Vulpes macrotis ssp. nevadensis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 4.2 | calculated with Minimum Area Method | km2 | Male | Adult | 5 | Pine Valley | Exposure Factor Datasets | 1.5 SD |
| Home Range | 1.9 | calculated with Minimum Area Method | km2 | Female | Adult | 4 | Pine Valley | Exposure Factor Datasets | 1.2 SD |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Population Density | population density on 10,359.9 ha study area | ha/fox | Both Male and Female | Adult | foxes 9-22 | western Utah | Exposure Factor Datasets |
Coyote (Canis latrans)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | Jan. - Apr. | Both Male and Female | Adult | 10 | Lower Fraser Valley, British Columbia | Exposure Factor Datasets | CANADA | |||
| Dietary Composition | microtines (70.2%); rabbits (8.1%); domestic livestock (4.3%); passerines (2%); other mammals (4.7%); plants (10.3%); misc. (0.3%) | % scat volume | % | Not Reported | Not Reported | 862 | Lower Fraser Valley, British Columbia | Exposure Factor Datasets | CANADA | |
| Home Range | 7.7 | 95% home range estimated by minimum convex polygon method | km2 | Male | Adult | 6 | Lower Fraser Valley, British Columbia | Exposure Factor Datasets | CANADA | 4.2 SD |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
|---|---|---|---|---|---|---|---|---|---|
| Survival/ Mortality | 0.52 | mean annual survival rate | Both Male and Female | Juvenile | 16 | Pinon Canyon Maneuver Site, Trinidad (elev., 1310-1740 m) | Exposure Factor Datasets | 1-2 yrs | |
| Population Density | 0.29 | pre-whelping density | #/km2 | Both Male and Female | Both Adults and Juveniles | Not Reported | Pinon Canyon Maneuver Site, Trinidad (elev., 1310-1740 m) | Exposure Factor Datasets | |
| Clutch or Litter Size | 3.2 | pups/litter | Female | Adult | 16 | Pinon Canyon Maneuver Site, Trinidad (elev., 1310-1740 m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 10.1 | overall home range estimated by minimum convex method (95% probability) | km2 | Both Male and Female | Both Adults and Juveniles | 12 | McRae and Irwin Counties | Exposure Factor Datasets | 6.9 (95% CI) |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 13.32 | unskinned weight estimated from skinned weight | kg | Male | Juvenile | 89 | New Brunswick and Nova Scotia | Exposure Factor Datasets | CANADA |
| Body Weight - Mean | 16.64 | unskinned weight estimated from skinned weight | kg | Male | Adult | 50 | New Brunswick and Nova Scotia | Exposure Factor Datasets | CANADA |
| Body Weight - Mean | 11.42 | unskinned weight estimated from skinned weight | kg | Female | Juvenile | 80 | New Brunswick and Nova Scotia | Exposure Factor Datasets | CANADA |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Home Range | 12.6 | 85% harmonic mean estimate of home range for "territorial" class | km2 | Both Male and Female | Both Adults and Juveniles | 13 | Jornada Experimental Range, Dona Ana County (elev., 1320-1390 m) | Exposure Factor Datasets | 1.8 SE | |
| Home Range | 25.9 | 85% harmonic mean estimate of home range for "transient" class | km2 | Both Male and Female | Both Adults and Juveniles | 12 | Jornada Experimental Range, Dona Ana County (elev., 1320-1390 m) | Exposure Factor Datasets | 6.5 SE | |
| Body Weight - Mean | 11.6 | kg | Male | Adult | 21 | Jornada Experimental Range, Dona Ana County (elev., 1320-1390 m) | Exposure Factor Datasets | >3 yrs | 1.4 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties |
|---|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | leporid (76.4%); rodent (18.0%); livestock (13.5%); bird (13.5%); insect (4.5%); other (14.6%) | % frequency of occurrence in stomach contents | % | Both Male and Female | Adult | 89 | Naval Petroleum Reserves (elev., 88-473m) [lat., 35^oN; long., 119^oN] | Exposure Factor Datasets | > 1 yr | Kern |
| Dietary Composition | leporid (57.6%); rodent (27.1%); livestock (27.1%); bird (20.3%); insect (11.9%); other (25.4%) | % frequency of occurrence in stomach contents | % | Both Male and Female | Juvenile | 59 | Naval Petroleum Reserves (elev., 88-473m) [lat., 35^oN; long., 119^oN] | Exposure Factor Datasets | 1 yr | Kern |
| Dietary Composition | leporid (62.7%); rodent (19.4%); livestock (17.9%); bird (14.9%); insect (41.8%); other (26.9%) | % frequency of occurrence in stomach contents | % | Both Male and Female | Juvenile | 59 | Naval Petroleum Reserves (elev., 88-473m) [lat., 35^oN; long., 119^oN] | Exposure Factor Datasets | <1 yr | Kern |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | range of 5 yearly averages | pups/litter | Female | Adult | 5 yrs | Exposure Factor Datasets | ||
| Survival/ Mortality | 60.9 | mean survival rate estimated from population age structure data | % | Both Male and Female | Both Adults and Juveniles | Not Reported | Exposure Factor Datasets | |
| Dietary Composition | rabbits (51.0%); mice (12.3%); other mammals (8.0%); birds (2.7%); plants (0.3%); misc. (0.2%) | % volume of food items in stomach contents | % | Not Reported | Not Reported | 222 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 9.3 | kg | Female | Juvenile | 7 | Naval Petroleum Reserves (elev., 88 - 473 m) | Exposure Factor Datasets | 1yr | Kern | 0.3 SE |
| Body Weight - Mean | 10.1 | kg | Female | Adult | 5 | Naval Petroleum Reserves (elev., 88 - 473 m) | Exposure Factor Datasets | >2 yr | Kern | 1.1 SE |
| Body Weight - Mean | 2.2 | kg | Female | Pup | 19 | Naval Petroleum Reserves (elev., 88 - 473 m) | Exposure Factor Datasets | <1yr | Kern | 0.1 SE |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Food Ingestion Rate | range of daily dry matter intake per unit metabolic weight (g food/body weight^0.75) for deer, hare or mice diets | g/kg/d | Both Male and Female | Juvenile | 4 | captured in Aroostook County, ME | Exposure Factor Datasets | 9 mo | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Countries |
|---|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 5.3 | pups/litter | Female | Adult | 26 | Rochester, Alberta | Exposure Factor Datasets | CANADA | ||
| Longevity | oldest female and male | yrs | Both Male and Female | Adult | Not Reported | Rochester, Alberta | Exposure Factor Datasets | CANADA | ||
| Survival/ Mortality | 71 | mortality rate | % | Both Male and Female | Juvenile | Not Reported | Rochester, Alberta | Exposure Factor Datasets | 0 - 1 yr | CANADA |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Mammals: Spermophilus beecheyi (43%); Microtus californicus (61%); Peromyscus maniculatus and Reithrodontomys megalotis (30%); Lepus californicus (43%); Thomomys bottae (9%); Insects (13%); Seeds and berries (4%); Herbaceous vegetation (35%); Wheat (Avena spp.) (9%) | % of scats containing each prey item | % | Not Reported | Not Reported | 23 | Concord Naval Weapons Station | Exposure Factor Datasets | Contra Costa |
| Dietary Composition | Mammals: Spermophilus beecheyi (67%); Microtus californicus (45%); Peromyscus maniculatus and Reithrodontomys megalotis (29%); Lepus californicus (12%); Thomomys bottae (2%); Birds (5%); Seeds and berries (19%); Herbaceous vegetation (43%); Wheat (Avena spp.) (24%) | % of scats containing each prey item | % | Not Reported | Not Reported | 42 | Concord Naval Weapons Station | Exposure Factor Datasets | Contra Costa |
| Dietary Composition | Mammals: Spermophilus beecheyi (43%); Microtus californicus (30%); Peromyscus maniculatus and Reithrodontomys megalotis (43%); Lepus californicus (17%); Thomomys bottae (4%); Insects (13%); Seeds and berries (13%); Herbaceous vegetation (17%); Wheat (Avena spp.) (13%) | % of scats containing each prey item | % | Not Reported | Not Reported | 23 | Concord Naval Weapons Station | Exposure Factor Datasets | Contra Costa |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Food Ingestion Rate | % body weight/d based on a deer and snowshoe hare diet | %/d | Both Male and Female | Both Adults and Juveniles | 3 animals/ 1-2 time periods | Chequamegon National Forest | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | cottontail (45.4%); ground squirrel (31.2%); gopher snake (6.0%); woodrat (4.9%); pocket gopher (3.5%); kangaroo rat (3.3%); other (5.7%) | computed % by weight of total recorded prey; based on scat analysis | % | Not Reported | Not Reported | 1173 scats | San Joaquin Experimental Range | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 5.0 | estimated by placental scars | young/litter | Female | Adult | 59 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 274 | g | Both Male and Female | Neonate | 6 | Exposure Factor Datasets | 0d | Laboratory |
Long-tailed Weasel (Mustela frenata)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 279 | d | Female | Adult | 18 | Exposure Factor Datasets | Laboratory | |
| Clutch or Litter Size | young/litter | Female | Adult | Not Reported | Exposure Factor Datasets | Laboratory | ||
| Clutches or Litters per year | 1 | litter/yr | Female | Adult | Not Reported | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Population Density | 4 | #/160 acres | Not Reported | Not Reported | Not Reported | Ames | Exposure Factor Datasets |
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| Home Range | acres | Not Reported | Not Reported | Not Reported | Gunnison County (elev., >7500 ft) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 287 | g | Male | Adult | 12 | Exposure Factor Datasets |
Striped Skunk (Mephitis mephitis)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 5.8 | placental scars | Female | Both Adults and Juveniles | 13 animals | Exposure Factor Datasets | > 2 years | 0.66 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| Dietary Composition | insects 43.06; fruits 27.56; mammals 16.25; grains 8.69; Carrion 1.76; Birds 1.46; reptiles, amphibians 1.14. | frequency %; stomach and fecal analysis | % | 570 fecal analyses; 50 stomach analyses | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Home Range | 3310 | home range, as indexed by greatest distance between captures | m | Male | Juvenile | 29 juveniles | Tofield 15 deg.N,112 deg. W east central Alberta | Exposure Factor Datasets | CANADA | 410 SE |
| Home Range | 4150 | home range, as indexed by greatest distance between captures | m | Female | Juvenile | 19 juveniles | Tofield 15 deg.N,112 deg. W east central Alberta | Exposure Factor Datasets | CANADA | 1191 SE |
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | pups/litter | Female | Adult | 1 female | Exposure Factor Datasets | Laboratory | |
| Duration of Incubation or Gestation | d | Both Male and Female | Embryo | 1 female | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 33.4 | g | Not Reported | Neonate | 12 | Exposure Factor Datasets | ||
| Dietary Composition | see citation | stomach contents and fecal analysis | Both Male and Female | Adult | 149; 20 | Exposure Factor Datasets | ||
| Time of Mating/ Laying | Feb/Mar | Both Male and Female | Adult | 19 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 2.19 | kg | Male | Both Adults and Juveniles | 11 animals | Bearville study area; Itasca county | Exposure Factor Datasets | 0.5 years | 0.17 SE |
| Body Weight - Mean | 1.65 | kg | Male | Both Adults and Juveniles | 10 animals | Bearville study area; Itasca county | Exposure Factor Datasets | 0.5 years | 0.07 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | newborn | g | Female | Neonate | 3 embryos | Exposure Factor Datasets | ||
| Clutch or Litter Size | 5.8 | examination of reproductive tract | embryos | Female | Neonate | 40 females | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 0.07 | kg | Female | Juvenile | 6 juveniles | Saskatchewan; Alberta | Exposure Factor Datasets | CANADA | 0.1 SD |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| Time of Mating/ Laying | mid February-mid March | Both Male and Female | Adult | Not Reported | Magee Marsh; Ottawa natll. wildlife refuge | Exposure Factor Datasets |
Kit Fox (Vulpes macrotis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| 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 | Laboratory |
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