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| Exposure Endpoint Type | Endpoint Value | Error | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 8.6 | 0.035 | g | NR | Not Reported | East Mojavae National Preserve | 2 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Error | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 4 | g | Both Male and Female | Juvenile | Owens Valley, Big Pine (lat., 37^o11'N) | Not Reported | Exposure Factor Datasets | ||
| Duration of Incubation or Gestation | 3 | wk | Female | Adult | Owens Valley, Big Pine (lat., 37^o11'N) | Not Reported | Exposure Factor Datasets | ||
| Time of Torpor or Hibernation | Sept. - Mar. or Apr. | Not Reported | Adult | Owens Valley, Big Pine (lat., 37^o11'N) | Not Reported | Exposure Factor Datasets | |||
| Time of Mating/ Laying | Apr. - May | Both Male and Female | Adult | Owens Valley, Big Pine (lat., 37^o11'N) | Not Reported | Exposure Factor Datasets | |||
| Body Weight - Mean | 7.2 | 0.7 SD | g | Male | Adult | Owens Valley, Big Pine (lat., 37^o11'N) | 66 | Exposure Factor Datasets | |
| Body Weight - Mean | 7.3 | 1.1 SD | g | Female | Adult | Owens Valley, Big Pine (lat., 37^o11'N) | 67 | Exposure Factor Datasets | |
| Clutch or Litter Size | 4.75 | 0.77 SD | 4 - 6 | pups/litter | Female | Adult | Owens Valley, Big Pine (lat., 37^o11'N) | 16 | Exposure Factor Datasets |
| Body Weight - Mean | 0.5 | g | Not Reported | Neonate | Owens Valley, Big Pine (lat., 37^o11'N) | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of means of initial weights for 3 experimental groups | 9.33 - 9.45 | g | Not Reported | Not Reported | captured at Joshua Tree, San Bernadino County, CA | 9/group | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Population Density | range in monthly density estimates over 2 yrs | 0.73 - 1.74 | #/ha | Not Reported | Not Reported | Indian Cove, Joshua Tree National Monument | Not Reported | Exposure Factor Datasets |
| Body Weight - Mean | range of annual weight means for 2 yrs | 8.1 - 8.8 | g | Both Male and Female | Adult | Indian Cove, Joshua Tree National Monument | 31 - 65/yr | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Home Range | 0.33 | annual composite home range estimated by principal component method (95% probability) | ha | Not Reported | Not Reported | Warm Springs Valley, Washoe County | 394 recapture loci | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Longevity | lifespan in captivity | 4 - 7 | yrs | Both Male and Female | Adult | captured in San Diego County | 2 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Dietary Composition | Grasses: Oryzopsis hymenoides (27.7%); Hilaria rigida (6.6%); Bromus rubens (8.5%); Annual forbs: Plantago insularis (12.3%); Phacelia spp. (4.5%); Perrenial shrubs: Ephedra funera (9.8%); Sphaeralcea ambigua (11.3%); Dalea fremontii (7.3%); Vegetative plant parts: Phacelia spp. (3.5%); Misc. (4.5%) | % volume in cheek pouches of major (>2%) food items | Not Reported | Not Reported | Las Vegas Valley, Clark County (elev., 2500 ft) | 27 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Metabolic Rate | OC = 12.68 - 0.286T | equation for average maintenance metabolism estimated as oxygen consumption (OC) at ambient temperatures (T; <30C). | ml O2/g/hr | Not Reported | Not Reported | 27 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Error | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 5.78 | 0.22 | embryos/litter | Female | Adult | Floating Island, Tooele County (elev., 1300-1420 m) | 9 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Longevity | > 8 | lifespan in captivity | yrs | Not Reported | Adult | captured in Kern County, CA | 1 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Longevity | 8.3 | maximum lifespan in captivity | yrs | Both Male and Female | Adult | 216 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Age at Fledging, Metamorphosis, Weaning | 18 | d | Not Reported | Juvenile | 26 | Exposure Factor Datasets | |
| Growth Rate | see citation | figure of body weight at various ages (0 - 60 d) with calculated instantaneous growth rates | g | Not Reported | Juvenile | 26 | Exposure Factor Datasets |
| Body Weight - Mean | 1.3 | weight at birth | g | Not Reported | Neonate | 26 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Home Range | 19.0 | home range expressed as "sigma" (radius within which the probability of an animal being present is 39%) | m | Both Male and Female | Not Reported | U.S. Atomic Energy Commission, Nevada Test Site | 4 sampling periods | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | see citation | monthly % volume of food items (detailed species-specific list) in feces | % | Both Male and Female | Not Reported | Irvine Ranch | 3 - 26/mo | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Error | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Foraging Distance | < 50 | maximum distance moved by individuals in one trap night | m | Not Reported | Not Reported | Owens Valley (1,220 m) | 219 | Exposure Factor Datasets | ||
| Body Weight - Mean | 7.1 | 0.11 SE | 6.3-8.0 | g | Both Male and Female | Not Reported | Owens Valley | 22 individuals | Exposure Factor Datasets | |
| Survival/ Mortality | overwinter survival rates for sampled populations, measured for 3 consecutive years | 36-82% | Not Reported | Not Reported | Owens Valley (1,220 m) | 11-27 individuals/yr | Exposure Factor Datasets | |||
| Food Ingestion Rate | S = -9.37T + 408 | seed consumption (S) in mg/g bw/d as a function of ambient temperature, in centigrade (T) | Not Reported | Not Reported | 8 individuals | Exposure Factor Datasets | ||||
| Food Ingestion Rate | seed consumption measured in field enclosures | 76-197 | mg/g bw/d | Both Male and Female | Not Reported | Owens Valley | 6 individuals | Exposure Factor Datasets | ||
| Body Weight - Mean | range of mean body weights measured multiple times in individuals | 7.3-7.8 | g | Both Male and Female | Not Reported | Owens Valley | 6 individuals | Exposure Factor Datasets | ||
| Food Ingestion Rate | amount of seed consumed at 6.5 degrees C | 20-316 | mg/g bw/d | Not Reported | Not Reported | 10 individuals | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Error | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 7.4 | 1.1 SD | g | Both Male and Female | Adult | Great Basin Desert, near Reno | 8 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|
| Population Density | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Home Range | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|
| Time of Molt | July and August | Not Reported | Not Reported | Owens Valley | Not Reported | Exposure Factor Datasets |
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