Lizards and snakes (Squamata)
Sideblotched Lizard (Uta stansburiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 0.219 | estimated using probability density function (95% confidence interval) | ha | Male | Adult | 9 | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets | 0.06 SE |
| Home Range | 0.175 | estimated using probability density function (95% confidence interval) | ha | Female | Adult | 8 | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets | |
| Survival/ Mortality | 30 | annual adult survival | % | Both Male and Female | Adult | 36 | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets | |
| Age at Sexual Maturity | mo | Both Male and Female | Adult | Not Reported | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | May-June | Not Reported | Hatchling | Not Reported | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 4.3 | average clutch size | eggs/female | Female | Adult | 27 | Del Puerto Canyon Road | Exposure Factor Datasets | Stanislaus |
| Clutch or Litter Size | 6.3 | average clutch size | eggs/female | Female | Adult | 35 | Los Banos Creek, Billy Wright Road | Exposure Factor Datasets | Merced |
| Body Weight - Mean | 0.42 | average egg weight | g | Not Reported | Embryo | 12 | Corral Hollow Road | Exposure Factor Datasets | Contra Costa |
| Body Weight - Mean | 0.38 | average egg weight | g | Not Reported | Embryo | 27 | Del Puerto Canyon Road | Exposure Factor Datasets | Stanislaus |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Growth Rate | range of average male and female growth rates, based on increases in snout-vent length (40-49 mm) | mm/d | Both Male and Female | Adult | 17-21/sex | Exposure Factor Datasets | ||
| Population Density | #/acre | Both Male and Female | Juvenile | Not Reported | Exposure Factor Datasets | |||
| Dietary Composition | Arachnids (2.4-22.4%); Orthopterans (0-16.7%); Isopterans (0-17.5%); Coleopterans (8.2-45.7%); Hemipterans (0-47.9%); Homopterans (0-34.8%); Neuropterans (0-1.3%); Lepidopterans (2.8-34.0%); Dipterans (0-9.3%); Hymenopterans (4.3-72.8%) | range of monthly percentages of total volume of food in stomach contents | % | Not Reported | Not Reported | 7-24 lizards/mo | Exposure Factor Datasets | |
| Body Weight - Mean | range of average weights for snout-vent length size classes of 20-45 mm | g | Male | Juvenile | 1-67 lizards/size class and date | Exposure Factor Datasets | ||
| Home Range | 4896 | average and range of home ranges at 2 sites over 6 yrs, estimated using minimum polygon method (mark and recapture technique) | sq. ft. | Male | Adult | 7-26 lizards/site and yr | Exposure Factor Datasets | |
| Body Weight - Mean | range of average weights for snout-vent length size classes of 20-41 mm | g | Female | Juvenile | 1-88 lizards/size class and date | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 3.75 | mean clutch size | eggs/clutch | Female | Adult | 124 | Snake River Valley (elev., 530-750m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | range of mean monthly clutch sizes for females >12 mo old, measured over a 10 yr period | eggs/clutch | Female | Adult | 1363 | Rock Valley, Nye county | Exposure Factor Datasets |
| Body Weight - Mean | snout vent length range = 49 - 51 mm | g | Female | Adult | 19 | Rock Valley, Nye county | Exposure Factor Datasets |
| Clutches or Litters per year | clutches/yr | Female | Adult | 1363 | Rock Valley, Nye county | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Spiders (4.70); Solpugids (0.56); Ants (7.87); Other Hymenoptera (0.54); Grasshoppers and Crickets (21.68); Roaches (0.20); Mantids (0.66); Beetles (12.35); Termites (0.10); Homoptera-Hemiptera (2.19); Diptera (2.54); Lepidoptera (1.24); Insect larvae (6.13); Unidentified Insects (6.52); Plant Materials (0.89); Unidentified (2.89) | volume (cc) of prey items in stomach contents | cc | Not Reported | Not Reported | 556 | Mountain Home, ID; Granstville, UT; Lovelock, Gabbs and Beatty, NV [lat., 37-42] | Exposure Factor Datasets |
| Dietary Composition | Spiders (4.1); Solpugids (0.5); Ants (14.7); Other Hymenoptera (2.6); Grasshoppers (19.3); Roaches (3.6); Mantids (1.3); Ant Lions (0.6); Beetles (41.2); Termites (33.8); Homoptera-Hemiptera (1.9); Diptera (0.4); Lepidoptera (1.2); Insect larvae (11.3); Unidentified Insects (9.9); Insect Eggs (0.3); Lizards (0.5); Plant Materials (3.0); Unidentified (9.4) | volume (cc) of prey items in stomach contents | cc | Not Reported | Not Reported | 811 | Pahrump, Searchlight, NV; Mojave, Twentynine Palms, CA; Salome, Phoenix South Mountain, Casa Grande, AZ [lat., 32-36] | Exposure Factor Datasets |
| Clutches or Litters per year | clutches/yr | Female | Adult | Not Reported | Stansbury and Granstville, UT [lat., 40] | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Araneae (3.0%); Acari (1.0%); Solifugae (<0.1%); Hexapoda (2.4%); Collembola (0.3%); Thysanura (0.1%); Orthoptera (3.6%); Dermaptera (0.1%); Isoptera (0.5%); Thysanoptera (0.2%); Hemiptera (8.3%); Homoptera (3.5%); Neuroptera (0.8%); Coleoptera (11.9%); Lepidoptera (3.3%); Diptera (1.4%); Hymenoptera (59.2%); Insect eggs (0.5%); Plants (0.1%) | % of total number of prey items in stomach contents | % | Not Reported | Not Reported | 266 | Eddy and Lea counties | Exposure Factor Datasets |
| Dietary Composition | Araneae (1.2); Acari (1.8); Solifugae (1.0); Hexapoda (26.3); Collembola (2.5); Thysanura (1.0); Orthoptera (1.2); Dermaptera (1.0); Isoptera (15); Thysanoptera (1.5); Hemiptera (2.3); Homoptera (1.8); Neuroptera (1.3); Coleoptera (2.2); Lepidoptera (1.7); Diptera (1.3); Hymenoptera (9.3); Insect eggs (9.0); Plants (1.0) | mean number of prey eaten per lizard eating such prey (estimated from stomach contents) | # prey/lizard | Not Reported | Not Reported | 266 | Eddy and Lea counties | Exposure Factor Datasets |
Island Night Lizard (Xantusia riversiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Sample Size | Location | Type | Age-Specific | Error |
|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | 0.030 | increase in snout-vent length (60-70 mm size class) | mm/d | Not Reported | Not Reported | Santa Barbara Island | Exposure Factor Datasets | 2.9 yr | 0.002 SE |
| Growth Rate | 0.018 | increase in snout-vent length (70-80 mm size class) | mm/d | Not Reported | Not Reported | Santa Barbara Island | Exposure Factor Datasets | 4.5 yr | 0.002 SE |
| Growth Rate | 0.011 | increase in snout-vent length (80-90 mm size class) | mm/d | Not Reported | Not Reported | Santa Barbara Island | Exposure Factor Datasets | 6.9 yr | 0.002 SE |
| Growth Rate | 0.005 | increase in snout-vent length (90-100 mm size class) | mm/d | Not Reported | Not Reported | Santa Barbara Island | Exposure Factor Datasets | 12.4 yr | 0.004 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | 0.03 | increase in snout-vent length during 2nd yr | mm/d | Both Male and Female | 12 | San Clemente Island | Exposure Factor Datasets | 1-2 yr | |
| Longevity | oldest recorded individual | yr | Both Male and Female | Adult | Not Reported | San Clemente Island | Exposure Factor Datasets | ||
| Body Weight - Mean | g | Both Male and Female | Adult | Not Reported | San Clemente Island | Exposure Factor Datasets |
Western Skink (Eumeces skiltonianus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 0.669 | egg weight | g | Not Reported | Embryo | 6 | Exposure Factor Datasets | San Bernardino | 0.042SD |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | May-June | time of breeding | Both Male and Female | Adult | Not Reported | Exposure Factor Datasets | |
| Time of Hatching or Parturition | July - Aug. | Not Reported | Hatchling | Not Reported | Exposure Factor Datasets |
Gopher Snake (Pituophis catenifer formerly Pituophis melanoleucus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Food Ingestion Rate | 1.6 | % body weight consumed per day | % | Not Reported | Not Reported | 43 | captive in outdoor enclosures at Snake River Birds of Prey Area | Exposure Factor Datasets | Age class 1 and older | 0.82 SD | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 238.4 | g | Male | Adult | 231 | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets | 101.5 SD |
| Body Weight - Mean | 267.9 | g | Female | Adult | 90 | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets | 123.0 SD |
| Clutch or Litter Size | 6.9 | eggs/clutch | Female | Adult | 20 | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets | 2.10 SD |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 8.5 | eggs/clutch | Female | Adult | 33 | "west coast" | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Ground squirrel (44.3%); Woodrat (29.5%); Cottontail (19.7%); Quail egg (8.4%); Pocket gopher (6.4%); Mouse (4.4%); Meadow mouse (3.4%); Fence lizard (1.5%); Kangaroo rat (1.3%); Pocket mouse (0.6%); Broad-shouldered lizard (0.4%) | % of total food items recovered from stomach contents | % | Not Reported | Not Reported | 72 food items | San Joaquin Experimental Range | Exposure Factor Datasets |
Common Garter Snake (Thamnophis sirtalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Hyla (55.5%); Catostomus (21.8%); Microtus (5.4%); Rhinichthys (11.5%) | % of total volume of stomach contents | % | Both Male and Female | Not Reported | <110 | Kyburz Flat | Exposure Factor Datasets | Sierra |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | minimum and maximum mean annual clutch size | young/litter | Female | Adult | 158 over 9 yrs | National History Reservation | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
|---|---|---|---|---|---|---|---|---|
| Survival/ Mortality | range of probability of surviving from spring of one year to spring of next year | % | Male | Adult | 43 - 132/yr for 3 yrs | Wood Buffalo National Park (lat., 59^o49'N; long., 112^oW) | Exposure Factor Datasets | CANADA |
San Joaquin Fence Lizard (Sceloporus occidentalis ssp. biseriatus)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Clutches or Litters per year | 1-3 | clutches/yr | Female | Adult | Not Reported | Puente Hills, Whittier (elev., 150 m) | Exposure Factor Datasets | Los Angeles |
| Clutches or Litters per year | 1-2 | clutches/yr | Female | Adult | Not Reported | San Gabriel Mountains, Crystal Lake (elev., 1584 m) | Exposure Factor Datasets | Los Angeles |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | insecta (97%); arachnida (0.8%); plants (0.3%); unidentified (1.6%) | % of total food dry weight, based on stomach contents | % | Not Reported | Both Adults and Juveniles | 18 | southern Washoe County (elev., 1150-1450m) | Exposure Factor Datasets |
Northwestern Fence Lizard (Sceloporus occidentalis ssp. occidentalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties | Condition |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Home Range | 19.64 | home range reported as minimum area probability (0.95 level); minimum area which will contain a given proportion (95%) of the total observations of the average individual | m2 | Female | Juvenile | 103 animals | Hastings Natural History Reservation, Carmel Valley | Exposure Factor Datasets | < 1yr | Monterey | |
| Home Range | 120.96 | home range reported as minimum area probability (0.95 level); minimum area which will contain a given proportion (95%) of the total observations of the average individual | m2 | Male | 23 animals | Hastings Natural History Reservation, Carmel Valley | Exposure Factor Datasets | 1 yr | Monterey | breeding | |
| Home Range | 76.25 | home range reported as minimum area probability (0.95 level); minimum area which will contain a given proportion (95%) of the total observations of the average individual | m2 | Female | 48 animals | Hastings Natural History Reservation, Carmel Valley | Exposure Factor Datasets | 1 yr | Monterey | breeding |
Desert Sideblotched Lizard (Uta stansburiana ssp. stejnegeri)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Home Range | 0.097 | average home range estimated from recapture radii (mean plus 2s) for individuals with 5+ recaptures | acres | Female | Not Reported | 11 | Dona Ana county [lat., 31^o47'10" N; long., 106^o35'05"W], (elev., 1250m) | Exposure Factor Datasets |
| Growth Rate | 0.034 | increase in snout-vent length, initial snout-vent length range, 48-53 mm | mm/d | Female | Not Reported | 10 | Dona Ana county [lat., 31^o47'10" N; long., 106^o35'05"W], (elev., 1250m) | Exposure Factor Datasets |
| Growth Rate | 0.028 | increase in snout-vent length, initial snout-vent length range, 41-46 mm | mm/d | Male | Not Reported | 10 | Dona Ana county [lat., 31^o47'10" N; long., 106^o35'05"W], (elev., 1250m) | Exposure Factor Datasets |
Red-spotted Garter Snake (Thamnophis sirtalis ssp. concinnus)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 90 | d | Female | Adult | Not Reported | Willamette Valley | Exposure Factor Datasets |
| Age at Sexual Maturity | 1 | yr | Male | Adult | Not Reported | Willamette Valley | Exposure Factor Datasets |
| Age at Sexual Maturity | 2 | yr | Female | Adult | Not Reported | Willamette Valley | Exposure Factor Datasets |
Red-sided Garter Snake (Thamnophis sirtalis ssp. parietalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Home Range | 35.0 | circular home range estimated from radius | acres | Male | Adult | 39 | Douglas and Jefferson Counties | Exposure Factor Datasets |
| Home Range | 22.7 | circular home range estimated from radius | acres | Female | Adult | 102 | Douglas and Jefferson Counties | Exposure Factor Datasets |
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|
| Body Weight - Mean | g | Both Male and Female | Not Reported | 60 | captured at Winnipeg, Manitoba | Exposure Factor Datasets | Laboratory |
Eastern Garter Snake (Thamnophis sirtalis ssp. sirtalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Lab |
|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 0.42 | estimated from changes in body composition | cal/g/d | Both Male and Female | Not Reported | 13 | captured in Portage County, WI | Exposure Factor Datasets | hibernating | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Population Density | 482 | #/48 acres | Both Male and Female | Both Adults and Juveniles | Not Reported | Washtenaw County | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 30.3 | g | Male | Adult | 6 | captured in Michigan and Ohio | Exposure Factor Datasets | 2.0 SE | Laboratory | |
| Body Weight - Mean | 52.1 | g | Female | Adult | 3 | captured in Michigan and Ohio | Exposure Factor Datasets | non-pregnant | 4.4 SE | Laboratory |
Blunt-nosed Leopard Lizard (Gambelia sila formerly Gambelia silus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | Aug. - Sept. | Not Reported | Hatchling | Not Reported | Exposure Factor Datasets | Kern, San Joaquin, San Luis Obispo, Tulare | |||
| Foraging Distance | 42 | maximum foraging distance from burrow | m | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets | Kern, San Joaquin, San Luis Obispo, Tulare |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | 0.7 | increase in snout-vent length | mm/mo | Female | Adult | 38 | Pixley National Wildlife Refuge, Delano and Kettleman Hills | Exposure Factor Datasets | Kern, Kings, Tulare |
| Clutch or Litter Size | range of average clutch size from 2 sites over 2 yrs | eggs/clutch | Female | Adult | 3-22 | Delano and Kettleman Hills | Exposure Factor Datasets | Kern, Kings |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Population Density | review | reported densities range from 0.10 - 3.4 lizards/acre (from unpublished reports) | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
Desert Iguana (Dipsosaurus dorsalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 5.2 | g | Both Male and Female | Juvenile | 37 | Thousand Palms | Exposure Factor Datasets | 0-1 mo | Riverside | 1.0 SD | |
| Population Density | 332 | #/ha | Both Male and Female | Both Adults and Juveniles | Not Reported | Thousand Palms | Exposure Factor Datasets | Riverside | |||
| Longevity | longest lived individual in study | yr | Both Male and Female | Adult | Not Reported | Thousand Palms | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Plant Species: Ambrosia dumosa (6.1%); Coldenia palmeri (16.2%); Dalea emoryi (2.9%); Dalea schottii (26.7%); Geraea canescens (4.1%); Larrea divaricata (23.9%); Palafoxia linearis (3.4%); Rafinesquia neomexicana (0.4%); Unidentified vegetation (12.3%); Arthropods (3.0%) | mean % of total dry matter stomach contents | % | Not Reported | Hatchling | 5 | Thousand Palms | Exposure Factor Datasets | Riverside |
| Body Weight - Mean | 3.5 | average snout-vent length = 5.1 cm | g | Not Reported | Hatchling | 5 - 52/sampling time | Thousand Palms | Exposure Factor Datasets | Riverside |
| Body Weight - Mean | 60 | average snout-vent length = 12.1 cm | g | Male | Adult | 9-24/sampling time | Thousand Palms | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Age at Sexual Maturity | > 4.5 | yr | Both Male and Female | Adult | Not Reported | Dale Dry Lake, Palm Springs and Algodones Dunes | Exposure Factor Datasets | Imperial, Riverside, San Bernardino |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Plants: Larrea divaricata (85%); Animal: Fecal pellets (10%); Bees (trace); Sand (trace) | % volume of total stomach contents | % | Not Reported | Not Reported | 17 | Coachella Valley | Exposure Factor Datasets | Riverside |
| Dietary Composition | Plants: Dicoria canescens (45%); Flower heads of composite (10%); Coldenia sp. (5%); Trifolium sp. (20%); Animal: Grasshoppers (5%); Dipsosaurus (5%); Fecal pellets (5%) | % volume of total stomach contents | % | Not Reported | Not Reported | 12 | Coachella Valley | Exposure Factor Datasets | Riverside |
| Dietary Composition | Plants: Dicoria canescens (50%); Flower heads of composite (25%); Dalea emoryi ? (10%); Coldenia sp. (10%) | % volume of total stomach contents | % | Not Reported | Not Reported | 8 | Coachella Valley | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | see citation | figure of % of food item in diet, based on dry weight of stomach contents | % | Not Reported | Not Reported | 11-14/season or location | Palm Desert and Thousand Palms | Exposure Factor Datasets | Riverside |
| Food Ingestion Rate | 50 | rate estimated from intake of preformed water and water content of food for animals maintaining weight on natural vegetation | g fresh wt food//kg/d | Not Reported | Not Reported | Not Reported | Palm Desert and Thousand Palms | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Population Density | range over 3 yrs at 3 sites | #/ha | Both Male and Female | Adult | 96 marked lizards | Coachella Valley | Exposure Factor Datasets | Riverside |
Western Fence Lizard (Sceloporus occidentalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 13.7 | estimated by number of developing ova | eggs/clutch | Female | Adult | 7 | Strawberry Canyon, Berkeley Hills | Exposure Factor Datasets |
| Longevity | 6 | oldest tagged individual | yr | Not Reported | Adult | 93 | Strawberry Canyon, Berkeley Hills | Exposure Factor Datasets |
| Clutches or Litters per year | 1 | clutches/yr | Female | Adult | 93 | Strawberry Canyon, Berkeley Hills | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 0.035 | resting metabolic rate at 18.5C, estimated as carbon dioxide production rate | ml CO2/g/hr | Both Male and Female | Adult | 11 | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | reproductively active | 0.002SE |
| Metabolic Rate | 0.052 | resting metabolic rate at 18.5C, estimated as carbon dioxide production rate | ml CO2/g/hr | Not Reported | Juvenile | 4 | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | 0.012SE | |
| Metabolic Rate | 0.185 | resting metabolic rate at 35C, estimated as carbon dioxide production rate | ml CO2/g/hr | Both Male and Female | Adult | 11 | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | reproductively active | 0.015SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | May-June (begin) | time of mating | Both Male and Female | Adult | Not Reported | central Sierra Nevada (elev., 2200m) | Exposure Factor Datasets | |
| Body Fat (total or %) | see citation | figure of seasonal changes in total body fat | Both Male and Female | Adult | 9-44 animals/mo | central Sierra Nevada (elev., 1500 or 2200m) | Exposure Factor Datasets | |
| Duration of Incubation or Gestation | 53 | d | Both Male and Female | Embryo | Not Reported | yellow pine forest, central Sierra Nevada (elev., 2200m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Aranea (8%); Coleoptera (12%); Lepidoptera (80%) | estimated percent of total volume of stomach contents | % | Not Reported | Not Reported | 3 | Blodgett Research Forest (elev., 1250-1310m), Challenge (elev., 760-910m) and McCloud Flat, Shasta-Trinity Forest (elev., 1160m) | Exposure Factor Datasets | El Dorado, Siskiyou, Yuba |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | range of mean winter daily growth rates estimated by changes in snout-vent length for 2 years; snout-vent length range, 35.1 - 37.3 mm | mm/d | Male | Juvenile | 7-10 animals/yr | Hastings Reservation | Exposure Factor Datasets | Monterey | |
| Growth Rate | range of mean winter daily growth rates estimated by changes in snout-vent length for 2 years; snout-vent length range, 33.0 - 36.5 mm | mm/d | Female | Juvenile | 6-14 animals/yr | Hastings Reservation | Exposure Factor Datasets | Monterey | |
| Clutch or Litter Size | CS = 0.261(SVL) - 10 | regression equation relating clutch size(CS) to female snout-vent length (SVL; mm) | eggs/clutch | Female | Adult | 27 | Hastings Reservation | Exposure Factor Datasets | Monterey |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 14.4 | g | Not Reported | Adult | 56 | Blackbird Valley (elev., 855-975m) and Foss Valley (elev., 436m) | Exposure Factor Datasets | Napa, Santa Clara | 0.90SD |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Formicidae (34.8-34.1%); Coleoptera (18.1-26.4%); Isoptera (19.8-17.2%); Hemiptera-Homoptera (5.0-8.1%); Non-formicid Hymenoptera (5.6-6.5%); Diptera (0.5-1.4%); Orthoptera (1.7-2.6%); Odonata (0.0-0.3%); Dermaptera (0.0-1.3%); Insect larvae (2.8-4.8%); Isopoda (0.0-1.4%); Arancae (1.6-2.8%); Land snails (0.0-0.5%); Sceloporus hatchlings (0.0-0.1%) and Unknown (1.4-2.0%) | percentage of total individuals of various prey taxa in stomach contents. | % | Not Reported | Adult | 45-47 animals/site | Blackbird Valley and Foss Valley | Exposure Factor Datasets | Napa, Santa Clara |
Coachella Valley Fringe-toed Lizard (Uma inornata)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Home Range | 270 | average home range estimated using minimum convex polygon method (snout-vent length, 51-79mm) | m2 | Male | Juvenile | 20 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside | 58 (95CI) |
| Home Range | 90 | average home range estimated using minimum convex polygon method (snout-vent length, 0-50mm) | m2 | Male | Hatchling | 9 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside | 58 (95CI) |
| Home Range | 437 | average home range estimated using minimum convex polygon method (snout-vent length, 70+mm) | m2 | Female | Adult | 37 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside | 168 (95CI) |
San Francisco Garter Snake (Thamnophis sirtalis ssp. tetrataenia)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | d | Female | Adult | 6 | Dallas and Fort Worth Zoos, TX | Exposure Factor Datasets | Laboratory | |
| Age at Sexual Maturity | 1 yr, 273d | yr,d | Female | Adult | 1 | Dallas and Ft. Worth Zoos | Exposure Factor Datasets | Laboratory |
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