Lizards and snakes (Squamata)
Alameda Whipsnake (Masticophis lateralis ssp. euryxanthus)
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | time from mating to egg laying | d | Female | Adult | 2 | outdoor enclosures, Hayward, CA | Exposure Factor Datasets | Laboratory |
| Body Weight - Mean | egg weight | g | Not Reported | Embryo | 10 | outdoor enclosures, Hayward, CA | Exposure Factor Datasets | Laboratory |
Red-sided Garter Snake (Thamnophis sirtalis ssp. parietalis)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | g | Female | Adult | Not Reported | Douglas and Jefferson Counties | Exposure Factor Datasets | ||||
| Body Weight - Mean | g | Male | Adult | Not Reported | Douglas and Jefferson Counties | Exposure Factor Datasets | ||||
| Body Weight - Mean | 1.88 | g | Not Reported | Neonate | 151 | Exposure Factor Datasets | newborn | 0.029 | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
|---|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | Apr. - May | time of breeding | Both Male and Female | Adult | Not Reported | Winnepeg, Manitoba | Exposure Factor Datasets | CANADA | |
| Body Weight - Mean | range of monthly mean weights | g | Both Male and Female | Adult | 10-16/mo | Winnepeg, Manitoba | Exposure Factor Datasets | CANADA | |
| Body Fat (total or %) | % ether-extractable lipids of total body weight (wet wt) | % | Both Male and Female | Adult | 10-16/mo | Winnepeg, Manitoba | Exposure Factor Datasets | CANADA |
Eastern Garter Snake (Thamnophis sirtalis ssp. sirtalis)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Population Density | 18.7 | #/ha | Not Reported | Not Reported | Not Reported | McDonough County | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 12.9 | young/litter | Female | Adult | 104 | Hanover | Exposure Factor Datasets | 6.1 SD |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | earthworms (80%); amphibians (5%); mammals, caterpillars and leeches (5%) | % frequency of occurrence in stomach contents | % | Not Reported | Not Reported | 178 | Washtenaw County | Exposure Factor Datasets |
Blunt-nosed Leopard Lizard (Gambelia sila formerly Gambelia silus)
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | Aug. | Not Reported | Hatchling | Not Reported | Elkhorn Plain (elev., 685-765m) | Exposure Factor Datasets | San Luis Obispo |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Clutches or Litters per year | clutches/yr | Female | Adult | Not Reported | Pixley National Wildlife Refuge, Delano and Kettleman Hills | Exposure Factor Datasets | Kern, Kings, Tulare | ||
| Time of Torpor or Hibernation | Oct. - Mar. | Not Reported | Not Reported | Not Reported | Pixley National Wildlife Refuge, Delano and Kettleman Hills | Exposure Factor Datasets | Kern, Kings, Tulare | ||
| Growth Rate | 11.8 | increase in snout-vent length before retreat in Oct. | mm/mo | Both Male and Female | Hatchling | 2 | Pixley National Wildlife Refuge, Delano and Kettleman Hills | Exposure Factor Datasets | Kern, Kings, Tulare |
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | eggs/clutch | Female | Adult | 11 | Elkhorn Plain | Exposure Factor Datasets | San Luis Obispo |
| Clutches or Litters per year | clutches/yr | Female | Adult | 11 | Elkhorn Plain | Exposure Factor Datasets | San Luis Obispo |
Desert Iguana (Dipsosaurus dorsalis)
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of means during 5 stages of reproductive cycle | g | Female | Adult | 7-15/stage | Southwest Herpetlogical Research and Sales, Calimesa | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 1558 | home range estimated using the convex polygon method | m2 | Female | Adult | 5 | Thousand Palms | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Food Ingestion Rate | estimated feeding rate to support energy expenditure measured in field | mg dry food/g/d | Not Reported | Adult | 7-11/time period | Thousand Palms | Exposure Factor Datasets | Riverside | |
| Time of Hatching or Parturition | Aug. | Not Reported | Hatchling | Not Reported | Thousand Palms | Exposure Factor Datasets | Riverside | ||
| Food Ingestion Rate | estimated feeding rate to support energy expenditure measured in field | mg dry food/g/d | Not Reported | Hatchling | 7-9/time period | Thousand Palms | Exposure Factor Datasets | Riverside | |
| Growth Rate | g/d | Not Reported | Hatchling | 5 - 52/sampling time | Thousand Palms | Exposure Factor Datasets | Riverside | ||
| Time of Torpor or Hibernation | Oct. - Mar. | Not Reported | Not Reported | Not Reported | Thousand Palms | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | log weight = 0.017 SVL - 0.11 | relationship between body weight (g) and snout-vent length (SVL, mm) | g | Not Reported | Juvenile | Not Reported | Palm Desert | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | range of standard metabolic rates (oxygen consumption) measured at 40C, predicted for 50 g animal, at 5 collection dates | ml O2/g/hr | Both Male and Female | Adult | 11-21/date | Exposure Factor Datasets | Laboratory | |
| Metabolic Rate | range of maximal rates of oxygen consumption measured at 40C, predicted for 50 g animal, at 5 collection dates | ml O2/g/hr | Both Male and Female | Adult | 11-21/date | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Population Density | 450 | #/ha | Not Reported | Both Adults and Juveniles | 45 lizards/10 quadrants (100m2) | Thousand Palms | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Lab |
|---|---|---|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Oct. - Mar. | Not Reported | Not Reported | 95 | Palm Springs | Exposure Factor Datasets | Riverside | |||
| Metabolic Rate | see citation | figure of resting oxygen consumption in hibernating and non-hibernating lizards at several body temperatures | cc O2/g/hr | Not Reported | Not Reported | 60 | Palm Springs | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | Apr. - July | time of potential breeding based on testis volume | Male | Adult | 365 | Dale Dry Lake, Palm Springs and Algodones Dunes | Exposure Factor Datasets | Imperial, Riverside, San Bernardino |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| Metabolic Rate | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
Western Fence Lizard (Sceloporus occidentalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 0.422 (20C); 0.783 (25C); 1.120 (30C); 1.315 (35C); 1.253 (40C) | "aerobic increment during activity"; mean oxygen consumption during 2 minutes of burst activity at various temperatures (20-40C) | cm3 O2/g/hr | Not Reported | Adult | 5-8 animals/temperature | Exposure Factor Datasets | Orange, Riverside |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 59 | d | Both Male and Female | Embryo | Not Reported | yellow pine forest, central Sierra Nevada (elev., 1500m) | Exposure Factor Datasets | |
| Time of Mating/ Laying | Apr. (begin) | time of mating | Both Male and Female | Adult | Not Reported | yellow pine forest, central Sierra Nevada (elev., 1500m) | Exposure Factor Datasets | |
| Time of Torpor or Hibernation | Sept. - May or June | Both Male and Female | Both Adults and Juveniles | Not Reported | red fir forest, Donner Summit, central Sierra Nevada (elev., 2200m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 8.61 | average snout-vent length = 62.67 mm | g | Female | Not Reported | 184 animals | yellow pine forest (elev., 1500m), central Sierra Nevada | Exposure Factor Datasets | 4.26SD |
| Food Ingestion Rate | 213 | mean measured stomach content fresh weight of lizards averaging 9.6 g | mg | Male | Not Reported | 295 | valley grassland (elev., 150m), central Sierra Nevada | Exposure Factor Datasets | 130SD |
| Food Ingestion Rate | 249 | mean measured stomach content fresh weight of lizard averaging 8.1 g | mg | Female | Not Reported | 194 | valley grassland (elev., 150m), central Sierra Nevada | Exposure Factor Datasets | 180SD |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | see citation | figure of relationship between egg mass and incubation time | Not Reported | Embryo | Not Reported | Exposure Factor Datasets | Laboratory | ||
| Growth Rate | see citation | figure of relationship between mass-specific growth rate and hatchling mass | g/d | Not Reported | Hatchling | Not Reported | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 7.50 | eggs/clutch | Female | Adult | 10 | "montane" habitat, (elev., 1830m) | Exposure Factor Datasets | San Diego | 0.62 |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 8.2 | eggs/clutch | Female | Adult | Not Reported | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | |
| Body Weight - Mean | 11.9 | g | Both Male and Female | Adult | 11 | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | 0.6SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | OC = 0.52W^0.54 | equation relating resting oxygen consumption (OC) to body weight (W, g) at 20C | cc O2/g/hr | Not Reported | Not Reported | 2-5/weight group | Exposure Factor Datasets | Laboratory | |
| Metabolic Rate | OC = 1.17W^0.64 | equation relating resting oxygen consumption (OC) to body weight (W, g) at 30C | cc O2/g/hr | Not Reported | Not Reported | 2-5/weight group | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of means for 6 monthly sampling periods; mean snout-vent length range, 68.5 - 76.8 mm | g | Male | Adult | 7-12 animals/month | Chatsworth [lat., 34^o25' N] | Exposure Factor Datasets |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Overall Total (837); Arthropod Total (383); Vertebrate Total (1); Plant Total (277): Includes; Insects, Coleoptera (8); Diptera (2); Hemiptera (34); Homoptera (45); Hymenoptera (461); Neuroptera (1); Lizards, Phrynosomatidae (2); Plants, Asteraceae (85); Boraginaceae (65); Loasaceae (128) | total numbers of food items found in stomach contents | # | Female | Adult | 17 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Oct. - Mar. | Not Reported | Not Reported | Not Reported | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 2.8 | eggs/clutch | Female | Adult | 61 | Coachella Valley | Exposure Factor Datasets | Riverside |
Sideblotched Lizard (Uta stansburiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
|---|---|---|---|---|---|---|---|---|---|
| Survival/ Mortality | range of % "survival to maturity" over 5 years for males and females | % | Both Male and Female | Juvenile | 17-65/date and sex | Exposure Factor Datasets | |||
| Duration of Incubation or Gestation | time from egg laying to hatching | d | Both Male and Female | Embryo | Not Reported | Exposure Factor Datasets | |||
| Population Density | range of densities estimated over 6 yrs at two sites | #/acre | Both Male and Female | Adult | Not Reported | Exposure Factor Datasets | breeding | ||
| Time of Hatching or Parturition | June - Oct. | based on hatchling observations | Not Reported | Embryo | Not Reported | Exposure Factor Datasets | |||
| Clutch or Litter Size | 3.2 | average clutch size based on counts of yolked follicles, eggs or corpora lutea | eggs/clutch | Female | Adult | 256 | Mesa County | Exposure Factor Datasets | |
| Growth Rate | range of average male and female growth rates, based on increases in snout-vent length | mm/d | Both Male and Female | Hatchling | 418 - 496/sex | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
|---|---|---|---|---|---|---|---|---|---|
| Food Ingestion Rate | 26.1 | mg dry mass diet/g/d | Both Male and Female | Adult | Not Reported | El Comitan, Baja California Sur | Exposure Factor Datasets | MEXICO | 11.7 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | Apr. - June | time of breeding | Both Male and Female | Adult | Not Reported | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets | |
| Time of Mating/ Laying | May - July | time of laying | Both Male and Female | Adult | Not Reported | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets | |
| Clutches or Litters per year | clutches/yr | Female | Adult | Not Reported | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Growth Rate | 5.19 | growth rate estimated by increase in snout-vent length (mm), snout-vent length range 30-40mm | mm/mo | Male | Not Reported | 7 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| Growth Rate | 0.79 | growth rate estimated by increase in snout-vent length (mm), snout-vent length range 40-50 mm | mm/mo | Female | Not Reported | 30 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| Growth Rate | 0.94 | growth rate estimated by increase in snout-vent length (mm), snout-vent length range 40-50mm | mm/mo | Male | Not Reported | 10 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Population Density | range of average densities estimated over 2 yrs | #/ha | Not Reported | Not Reported | Not Reported | San Joaquin Valley (elev., 460m), [lat., 37^o38'N; long., 121^o29' W] | Exposure Factor Datasets | San Joaquin |
| Survival/ Mortality | range of early activity season (spring to summer) mortality rates measured over 3 yrs | deaths/100 lizards/d | Not Reported | Adult | 90-169/yr | Chuckwalla Mountains (elev., 460m), [lat., 33^o37'N; long., 115^o18' W] | Exposure Factor Datasets | Riverside |
| Survival/ Mortality | range of early activity season (spring to summer) mortality rates measured over 3 yrs | deaths/100 lizards/d | Not Reported | Adult | 33-48/yr | Panamint Valley (elev., 790m), [lat., 36^o20'N; long., 117^o30' W] | Exposure Factor Datasets | Inyo |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 163 | oxygen consumption measured at 30C | mm3 O2/g/hr | Not Reported | Both Adults and Juveniles | 4 | Exposure Factor Datasets | fasted 3d | 13.2 SE | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | May - Aug. | time of laying | Female | Adult | 162 | San Gabriel Mountains (elev., 1585-1829m) | Exposure Factor Datasets | Los Angeles | |
| Clutches or Litters per year | clutches/yr | Female | Adult | 162 | San Gabriel Mountains (elev., 1585-1829m) | Exposure Factor Datasets | Los Angeles |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | OC = 0.60W^0.64 | equation relating resting oxygen consumption (OC) to body weight (W, g) at 20C | cc O2/g/hr | Not Reported | Not Reported | 2-5/weight group | Exposure Factor Datasets | Laboratory | |
| Metabolic Rate | OC = 1.30W^0.47 | equation relating resting oxygen consumption (OC) to body weight (W, g) at 30C | cc O2/g/hr | Not Reported | Not Reported | 2-5/weight group | Exposure Factor Datasets | Laboratory |
Island Night Lizard (Xantusia riversiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Age at Sexual Maturity | 2.9 | yr | Female | Adult | Not Reported | Santa Barbara Island | Exposure Factor Datasets | 0.2 SE | ||
| Longevity | 13.4 | estimated from largest lizard (snout-vent length, 102.5 mm)and known growth rates | yr | Both Male and Female | Adult | Not Reported | Santa Barbara Island | Exposure Factor Datasets | ||
| Growth Rate | 0.022 | increase in snout-vent length (34-40 mm size class) | mm/d | Not Reported | Not Reported | Santa Barbara Island | Exposure Factor Datasets | 0.8 yr | 0.002 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | Sept. | Not Reported | Hatchling | Not Reported | San Clemente, San Nicolas and Santa Barbara Islands | Exposure Factor Datasets | |
| Time of Mating/ Laying | Mar. - June | time of breeding | Both Male and Female | Adult | Not Reported | San Clemente, San Nicolas and Santa Barbara Islands | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Animal matter (68.8%), includes Arachnids (15.9%); Insects (50.4%); Crustaceans (2.6%); Plant matter (30.9%) | % of total content of stomachs | % | Not Reported | Not Reported | 18 | San Clemente Island | Exposure Factor Datasets |
Gopher Snake (Pituophis catenifer formerly Pituophis melanoleucus)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Food Ingestion Rate | 2 | g/d | Not Reported | Not Reported | Not Reported | San Joaquin Experimental Range | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Oct. - Apr. | Not Reported | Not Reported | 455 | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets | ||
| Body Weight - Mean | 11.5 | g | Both Male and Female | Neonate | 9 | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets | 0.3 SD |
| Body Weight - Mean | 45.0 | g | Male | Juvenile | 44 | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets | 38.9 SD |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| Dietary Composition | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Townsend ground squirrel (8.7%); Mountain conttontail (7.8%); Deer mouse (47.5%); Ord kangaroo rat (4.9%); Great Basin pocket mouse (5.8%); Montane vole (9.7%); House mouse (7.8%); Other species (7.8%) | % frequency of prey ingested based on stomach content and scat analysis | % | Not Reported | Not Reported | 103 items/405 captures | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets |
| Dietary Composition | Townsend ground squirrel (27.7%); Mountain conttontail (31.6%); Deer mouse (19.0%); Ord kangaroo rat (5.4%); Great Basin pocket mouse (1.8%); Montane vole (6.1%); House mouse (2.8%); Other species (5.5%) | % biomass of prey ingested based on stomach content and scat analysis | % | Not Reported | Not Reported | 103 items/405 captures | Snake River Birds of Prey Area, southwestern ID | 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 | Anurans (67%); Fish (11%); Leeches (22%) | % of stomachs containing prey item | % | Not Reported | Not Reported | 36 | Eagle Lake (elev., 1555m) [lat., 40^o33'24"N; long., 120^o47'5" W] | Exposure Factor Datasets | Lassen |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 12.5 | young/litter | Female | Adult | 23 | captured at Wood Buffalo National Park, Canada | Exposure Factor Datasets | 4.95 (SD) | Laboratory |
| Body Weight - Mean | 2.6 | g | Not Reported | Neonate | 187 | captured at Wood Buffalo National Park, Canada | Exposure Factor Datasets | 0.4 SD | Laboratory |
San Joaquin Fence Lizard (Sceloporus occidentalis ssp. biseriatus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 15.3 | average snout-vent length = 75mm | g | Not Reported | Adult | Not Reported | San Gabriel Mountains, Crystal Lake (elev., 1584 m) | Exposure Factor Datasets | Los Angeles |
| Body Weight - Mean | 11.1 | average snout-vent length = 67mm | g | Not Reported | Adult | Not Reported | Puente Hills, Whittier (elev., 150 m) | Exposure Factor Datasets | Los Angeles |
| Time of Torpor or Hibernation | Nov.-Feb. | Not Reported | Adult | Not Reported | Puente Hills, Whittier (elev., 150 m) | Exposure Factor Datasets | Los Angeles |
Northwestern Fence Lizard (Sceloporus occidentalis ssp. occidentalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | July - Sept. | time when hatchlings appeared at study site | Not Reported | Hatchling | Not Reported | Hastings Reservation, Carmel Valley (elev., 550m) | Exposure Factor Datasets | Monterey |
| Time of Mating/ Laying | May - July | time of laying, estimated from assumed incubation period of 60d | Female | Adult | Not Reported | Hastings Reservation, Carmel Valley (elev., 550m) | Exposure Factor Datasets | Monterey |
| Time of Mating/ Laying | Apr. - June | time of mating, based on observations of copulation and courtship behavior | Both Male and Female | Adult | Not Reported | Hastings Reservation, Carmel Valley (elev., 550m) | Exposure Factor Datasets | Monterey |
Desert Sideblotched Lizard (Uta stansburiana ssp. stejnegeri)
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | range of clutch size means for two time periods | eggs/clutch | Female | Adult | 71-95 | Crane county | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | July - Sept. | Not Reported | Hatchling | Not Reported | El Paso Mountains [lat., 35^o30'; long., 117^o40'] | Exposure Factor Datasets | Kern |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Population Density | 50.2 | #/ha | Both Male and Female | Both Adults and Juveniles | 45 marked lizards | Dona Ana county [lat., 31^o47'10" N; long., 106^o35'05"W], (elev., 1250m) | Exposure Factor Datasets |
California Whipsnake (Masticophis lateralis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 7.21 | based on oviducal egg count | eggs/female | Female | Adult | 19 | Exposure Factor Datasets | Los Angeles, San Diego |
California Striped Racer (Masticophis lateralis ssp. lateralis)
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | eggs/female | Female | Adult | 4 | Exposure Factor Datasets | Los Angeles, Riverside |
Western Skink (Eumeces skiltonianus)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 4.7 | eggs/clutch | Female | Adult | 6 | Exposure Factor Datasets | San Bernardino |
California Whipsnake (Masticophis lateralis), Common Garter Snake (Thamnophis sirtalis)
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | eggs/female | Female | Adult | 5 | Exposure Factor Datasets | Los Angeles, Mariposa, Tuolumne |
