Lizards and snakes (Squamata)
San Joaquin Fence Lizard (Sceloporus occidentalis ssp. biseriatus)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Age at Sexual Maturity | 1-2 | yrs | Female | Adult | Not Reported | Puente Hills and San Gabriel River, Whittier | Exposure Factor Datasets | Los Angeles |
Sideblotched Lizard (Uta stansburiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| 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 | |
| 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 | |
| Home Range | 1497 | average and range of home ranges at 2 sites over 6 yrs, estimated using minimum polygon method (mark and recapture technique) | sq. ft. | Female | Adult | 6-14 lizards/yr and site | Exposure Factor Datasets | |
| Home Range | 0.49 | home range estimated using probability density function (95%) | acre | Male | Adult | Not Reported | Exposure Factor Datasets | |
| Home Range | 0.15 | home range estimated using probability density function (95%) | acre | Female | Adult | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Orthoptera (31.3%); Coleoptera (5.7%); Hymenoptera (3.8%); Hemiptera (20.0%); Homoptera (1.9%); Lepidoptera (14.4%); Araneida (16.3%) | % volume in stomach contents | % | Not Reported | Not Reported | 8 | Owyhee Upland Province | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Age at Sexual Maturity | 1 | based on presence of mature spermazoa or yolked ovarian follicles, oviducal eggs or corpora lutea; snout-vent length = 40-43 mm | yr | Both Male and Female | Adult | 275 | Snake River Valley (elev., 530-750m) | Exposure Factor Datasets |
| Time of Mating/ Laying | Apr.-May and June-July | time of laying | Female | Adult | 124 | Snake River Valley (elev., 530-750m) | Exposure Factor Datasets | |
| Clutches or Litters per year | clutches/yr | Female | Adult | 124 | Snake River Valley (elev., 530-750m) | Exposure Factor Datasets | ||
| 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 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 |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Population Density | 88 | #/ha | Not Reported | Not Reported | Not Reported | Del Puerto Canyon | Exposure Factor Datasets | Stanislaus |
| Population Density | #/ha | Not Reported | Not Reported | Not Reported | Los Banos | Exposure Factor Datasets | Merced |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Longevity | 58 | oldest individual observed, female | mo | Both Male and Female | Adult | 3575 | Rock Valley, Nye county | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Oct. - Mar. | Not Reported | Not Reported | Not Reported | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets | |||
| Growth Rate | 0.22 | growth rate measured as increase in snout-vent length (mm) | mm/d | Male | Hatchling | 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 | |||
| Clutch or Litter Size | 3.33 | eggs/clutch | Female | Adult | 87 | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets | 0.08 SE | |
| Body Weight - Mean | egg weight | g | Not Reported | Embryo | 13 | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets | ||
| Population Density | 175 | #/ha | Both Male and Female | Both Adults and Juveniles | Not Reported | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets | ||
| 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 | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Home Range | 446 | home range estimted by convex polygon method (maximum was 810m2) | m2 | Male | Adult | 15 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| Home Range | 121 | home range estimted by convex polygon method (maximum was 202 m2) | m2 | Female | Adult | 15 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| Home Range | 61 | home range estimted by convex polygon method (maximum was 121 m2) | m2 | Not Reported | Juvenile | 15 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| Population Density | #/ha | Both Male and Female | Adult | Not Reported | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets | ||
| Population Density | #/ha | Not Reported | Juvenile | Not Reported | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets | ||
| Growth Rate | 4.29 | growth rate estimated by increase in snout-vent length (mm), snout-vent length range 21-35mm | mm/mo | Not Reported | Not Reported | 62 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| Growth Rate | 2.93 | growth rate estimated by increase in snout-vent length (mm), snout-vent length range 30-40mm | mm/mo | Female | Not Reported | 10 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| 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 |
| Growth Rate | 0.31 | growth rate estimated by increase in snout-vent length (mm), snout-vent length range 50-56mm | mm/mo | Female | Not Reported | 2 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| Growth Rate | 0.58 | growth rate estimated by increase in snout-vent length (mm), snout-vent length range 50-58mm | mm/mo | Male | Not Reported | 22 | Phoenix South Mountain, Maricopa county | Exposure Factor Datasets |
| 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 |
|---|---|---|---|---|---|---|---|---|
| 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 | ||
| Clutches or Litters per year | clutches/yr | Female | Adult | Not Reported | El Paso, TX; Casa Grande, Phoenix South Mountain, AZ | Exposure Factor Datasets | ||
| Clutch or Litter Size | range of mean clutch sizes | eggs/clutch | Female | Adult | 14-74 animals/site and time period | Hart Mountain, OR; Stansbury Island and Grantsville, UT [lat., 40-42] | Exposure Factor Datasets | |
| Clutch or Litter Size | range of mean clutch sizes | eggs/clutch | Female | Adult | 13-44 animals/site and time period | Phoenix South Mountain, Casa Grande, AZ; El Paso, TX [lat., 31-33] | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 284.3 | home range estimated using convex polygon method | m2 | Male | Adult | Not Reported | Carlsbad (elev., 1067m) | Exposure Factor Datasets | 41.5 (95%CI) |
| Home Range | 153.6 | home range estimated using convex polygon method | m2 | Female | Adult | Not Reported | Carlsbad (elev., 1067m) | Exposure Factor Datasets | 24.7 (95%CI) |
Western Fence Lizard (Sceloporus occidentalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| 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 | ||
| Age at Sexual Maturity | 20 | mo | Both Male and Female | Adult | Not Reported | central Sierra Nevada (elev., 1500 or 2200m) | Exposure Factor Datasets | |
| 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 | Error |
|---|---|---|---|---|---|---|---|---|---|
| Food Ingestion Rate | SCW = 0.46(BW)^0.63 | equation relating stomach content fresh weight (SCW; mg) to body weight (BW; g) | mg | Both Male and Female | Not Reported | 920 animals | yellow pine forest (elev., 1500m) and valley grassland (elev., 150m), central Sierra Nevada | Exposure Factor Datasets | |
| Food Ingestion Rate | 127 | estimated average stomach content fresh weight in 5 g lizard | mg | Both Male and Female | Not Reported | Not Reported | central Sierra Nevada (elev., 150m and 1500m) | Exposure Factor Datasets | |
| Food Ingestion Rate | 245 | estimated average stomach content fresh weight in a 15 g lizard | mg | Both Male and Female | Not Reported | Not Reported | central Sierra Nevada (elev., 150m and 1500m) | Exposure Factor Datasets | |
| Body Weight - Mean | 9.64 | mean snout-vent length = 66.35mm | g | Male | Not Reported | 295 animals | valley grassland (elev., 150m), central Sierra Nevada | Exposure Factor Datasets | 3.95SD |
| Body Weight - Mean | 8.08 | average snout-vent length = 62.99 mm | g | Female | Not Reported | 194 animals | valley grassland (elev., 150m), central Sierra Nevada | Exposure Factor Datasets | 3.76SD |
| Body Weight - Mean | 11.31 | average snout-vent length = 68.05 mm | g | Male | Not Reported | 256 animals | yellow pine forest (elev., 1500m), central Sierra Nevada | Exposure Factor Datasets | 3.88SD |
| 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 |
| Food Ingestion Rate | 223 | mean measured stomach content fresh weight of lizard averaging 11.3 g | mg | Male | Not Reported | 256 animals | yellow pine forest (elev., 1500m), central Sierra Nevada | Exposure Factor Datasets | 171SD |
| Food Ingestion Rate | 219 | mean measured stomach content fresh weight of lizard averaging 8.6 g | mg | Female | Not Reported | 184 animals | yellow pine forest (elev., 1500m), central Sierra Nevada | Exposure Factor Datasets | 182SD |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 0.24 | oxygen consumption measured in laboratory at 23C on newly caught (1 wk) lizards | cc O2/g/hr | Not Reported | Not Reported | 20 | U.S. International University Campus | Exposure Factor Datasets | San Diego |
| 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 | 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 |
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
|---|---|---|---|---|---|---|---|
| Home Range | m2 | Male | Adult | 24 | Hopland Field Station (160 km N of San Francisco) | Exposure Factor Datasets | breeding |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties | Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | range of means of absolute growth rates | g/d | Both Male and Female | Hatchling | Not Reported | Exposure Factor Datasets | 3 d to 3 wks | Laboratory | |||
| Body Weight - Mean | range of means | g | Both Male and Female | Hatchling | 52 - 73 | Exposure Factor Datasets | 3 d | Laboratory | |||
| Time of Hatching or Parturition | see citation | figure | Both Male and Female | Hatchling | Not Reported | Valyermo (elev., 1300m) [lat., 34^o27'N; long., 117^o45'W], Wrightwood (elev., 2200m) [lat., 34^o23'N; long., 117^o40' W], Throop Peak (elev., 2600m) [lat., 34^o22'N; long., 117^o48'W] | Exposure Factor Datasets | Los Angeles, San Bernardino | |||
| Time of Mating/ Laying | see citation | figure of time of egg laying | Female | Adult | Not Reported | Valyermo (elev., 1300m) [lat., 34^o27'N; long., 117^o45'W], Wrightwood (elev., 2200m) [lat., 34^o23'N; long., 117^o40' W], Throop Peak (elev., 2600m) [lat., 34^o22'N; long., 117^o48'W] | Exposure Factor Datasets | Los Angeles, San Bernardino |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | eggs/clutch | Female | Adult | 39 - 59 | Table Mountain, Wrightwood (elev., 2200m) and Mojave desert, Pearblossom (elev., 1330m) | Exposure Factor Datasets | |||
| 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 Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| 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 | |
| Metabolic Rate | range of means of whole animal standard metabolic rate estimated by oxygen consumption at 10C for 6 monthly measurements on lizards captured less than 3 d | ml O2/hr | Male | Adult | 7-12 animals/month | captured at Chatsworth [lat., 34^o25' N] | Exposure Factor Datasets | Laboratory |
| Metabolic Rate | range of means of whole body standard metabolic rate estimated by oxygen consumption at 16C for 6 monthly measurements on lizards captured less than 3 d | ml O2/hr | Male | Adult | 7-12 animals/month | captured at Chatsworth [lat., 34^o25' N] | Exposure Factor Datasets | Laboratory |
| Metabolic Rate | range of means of whole-body standard metabolic rate estimated by oxygen consumption at 35C for 6 monthly measurements on lizards captured less than 3 d | ml O2/hr | Male | Adult | 7-12 animals/month | captured at Chatsworth [lat., 34^o25' N] | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Condition |
|---|---|---|---|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | July - Sept. | Both Male and Female | Hatchling | Not Reported | 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, 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 | |
| Body Weight - Mean | BW = 4.44 - 0.31(SVL) + 0.0062(SVL)^2 | equation relating body weight (BW; g) to snout-vent length (SVL; 20 - 80mm) | g | Male | Both Adults and Juveniles | 101 | Hastings Reservation | Exposure Factor Datasets | Monterey | |
| Body Weight - Mean | BW = 2.72 - 0.21(SVL) + 0.0049(SVL)^2 | equation relating body weight (BW; g) to snout-vent length (SVL; mm) | g | Female | Both Adults and Juveniles | 58 | Hastings Reservation | Exposure Factor Datasets | Monterey | non-breeding |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Orthoptera (52.1%); Coleoptera (18.1%); Hymenoptera (10.6%); Hemiptera (2.0%); Homoptera (0.1%); Lepidoptera (5.5%); Araneida (2.7%) | % volume in stomach contents | % | Not Reported | Not Reported | 39 | Owyhee Upland Province | 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 | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Thysanura (0.5%); Collembola (1.0%); Dermaptera (0.5%); Orthoptera (37.1%); Isoptera (6.2%); Ephemeroptera (0.5%); Plecoptera (2.9%); Homoptera (5.7%); Hemiptera (27.6%); Coleoptera (42.4%); Diptera (47.1%); Lepidoptera (18.1%); Hymenoptera (20.9%); Isopoda (2.4%); Chilopoda (0.5%); Araneida (19.0%); Acarina (1.0%); S. occidentalis (1.4%) | percent of lizards in which prey type occurred in stomach contents | % | Both Male and Female | Adult | 210 | oak-grassland and creosote bush-rocky moutain terrain | Exposure Factor Datasets | Lake, Marin, Mendocino, Napa, San Mateo, Shasta, Sonoma, Tehama, Trinity |
Desert Sideblotched Lizard (Uta stansburiana ssp. stejnegeri)
| 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 | Endpoint Description | 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 | |
| Home Range | 0.254 | average home range estimated from recapture radii (mean plus 2s) for individuals with 5+ recaptures | acres | Male | Not Reported | 9 | 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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 2.5 | based on number of enlarged vitellogenic ovarian follicles (>2 mm) or oviductal eggs during a "dry" year | eggs/clutch | Female | Adult | 8 | Anapra, Dona Ana county | Exposure Factor Datasets | 0.38 |
| Clutch or Litter Size | 3.75 | based on number of enlarged vitellogenic ovarian follicles (>2 mm) or oviductal eggs during a "wet" year | eggs/clutch | Female | Adult | 20 | Anapra, Dona Ana county | Exposure Factor Datasets | 0.25 |
Desert Iguana (Dipsosaurus dorsalis)
| 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 |
| Home Range | minimum area versus probability estimate for 3 sites; estimate of area encompassing 95% of total space utilization | m2 | Male | Adult | Not Reported | Coachella Valley | Exposure Factor Datasets | Riverside |
| Home Range | minimum area versus probability estimates for 3 sites; estimate of area encompassing 95% of total space utilization | m2 | Female | Adult | Not Reported | Coachella Valley | Exposure Factor Datasets | Riverside |
| Body Weight - Mean | range of averages for 3 sites | g | Male | Adult | Not Reported | Coachella Valley | Exposure Factor Datasets | Riverside |
| Body Weight - Mean | range of averages for 3 sites | g | Female | Adult | Not Reported | Coachella Valley | Exposure Factor Datasets | Riverside |
