Lizards and snakes (Squamata)
San Francisco Garter Snake (Thamnophis sirtalis ssp. tetrataenia)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | 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 | |
| Body Weight - Mean | range of means from 6 breedings | g | Not Reported | Neonate | 6 groups of young | Dallas and Ft. Worth Zoos | Exposure Factor Datasets | Laboratory | |
| Clutch or Litter Size | 17 | young/female | Female | Adult | 6 | Dallas and Ft. Worth Zoos | Exposure Factor Datasets | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 57 | egg to hatching | d | Not Reported | Hatchling | Not Reported | Exposure Factor Datasets | Kern, San Joaquin, San Luis Obispo, Tulare | |
| 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 | 2.0 | increase in snout-vent length | mm/mo | Male | Adult | 36 | Pixley National Wildlife Refuge, Delano and Kettleman Hills | Exposure Factor Datasets | Kern, Kings, Tulare |
| 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 | 43.3 | g | Both Male and Female | Adult | 5 | Thousand Palms | Exposure Factor Datasets | 43-44 mo | Riverside | 9.7 SD | |
| 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 (15.4%); Coldenia palmeri (68.3%); Croton californica (2.8%); Dalea emoryi (5.9%); Dalea schottii (5.6%); Arthropods (1.3%); Gravel (0.8%) | mean % of total dry matter stomach contents | % | Not Reported | Hatchling | 12 | Thousand Palms | Exposure Factor Datasets | Riverside |
| 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 |
|---|---|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | Aug. | Not Reported | Hatchling | Not Reported | Dale Dry Lake, Palm Springs and Algodones Dunes | Exposure Factor Datasets | Imperial, Riverside, San Bernardino | |
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | June - July | time of laying | Female | Adult | Not Reported | Exposure Factor Datasets | |||
| 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 |
| 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 |
| 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 |
|---|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Nov. - Mar. | Not Reported | Both Adults and Juveniles | 93 | Strawberry Canyon, Berkeley Hills | Exposure Factor Datasets | ||
| 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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 0.198 | field metabolic rate estimated by carbon dioxide production, using doubly labelled water | ml CO2/g/hr | Both Male and Female | Adult | 11 | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | reproductively inactive | 0.034SE |
| 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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 |
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 | 1070 | average home range estimated using minimum convex polygon method (snout-vent length, 80+mm) | m2 | Male | Adult | 25 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside | 228 (95CI) |
| 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) |
Sideblotched Lizard (Uta stansburiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| 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 | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 63 | time between laying and hatching | d | Both Male and Female | Embryo | Not Reported | 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 | 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 |
| 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 | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| 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 |
|---|---|---|---|---|---|---|---|---|
| Population Density | #/acre | Both Male and Female | Juvenile | Not Reported | 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 | ||
| 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 20-41 mm | g | Female | Juvenile | 1-88 lizards/size class and date | 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 |
| 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 |
Island Night Lizard (Xantusia riversiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Sample Size | Location | Type | Age-Specific | Error |
|---|---|---|---|---|---|---|---|---|---|
| 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 Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| 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 | |
| Body Weight - Mean | g | Both Male and Female | Neonate | 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 |
|---|---|---|---|---|---|---|---|---|
| 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 | |||
| Clutch or Litter Size | eggs/clutch | Female | Adult | 8 clutches | 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 |
|---|---|---|---|---|---|---|---|---|
| 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 |
| Home Range | 460 | median distance traveled between recaptures | ft | Both Male and Female | Adult | 25 | San Joaquin Experimental Range | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| Time of Hatching or Parturition | Oct. | Not Reported | Hatchling | Not Reported | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets | |||
| Time of Mating/ Laying | June - July | time of laying | Female | Adult | Not Reported | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Lab |
|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | log VO2 = 0.013 + 0.049T | equation for oxygen consumption (logarithm of VO2; ul O2/g-h) as a function of body temperature (15-30C) | ul O2/g/hr | Not Reported | Adult | 11 | captured at Riverside, CA | Exposure Factor Datasets | resting | Laboratory |
Common Garter Snake (Thamnophis sirtalis)
| 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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 3.15 | maximal oxygen consumption at 30C | ml O2/hr | Both Male and Female | Juvenile | 245 | gravid adults captured near Lassen, CA | Exposure Factor Datasets | mean age, 31.6 d; range 11-58 d | 0.845 SD | Laboratory |
| Body Weight - Mean | 2.2 | g | Both Male and Female | Juvenile | 245 | Exposure Factor Datasets | mean age, 31.6 d; range 11-58d | 0.350 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 |
|---|---|---|---|---|---|---|---|---|
| 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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | CS = 0.378SVL - 17.04 | regression equation relating clutch size (CS; # eggs/oviduct) to snout-vent length (SVL, mm) of female. | eggs/clutch | Female | Adult | 49 | Puente Hills and San Gabriel River, Whittier | Exposure Factor Datasets | Los Angeles |
| Clutch or Litter Size | eggs/clutch | Female | Adult | 49 | Puente Hills and San Gabriel River, Whittier | Exposure Factor Datasets | Los Angeles |
Northwestern Fence Lizard (Sceloporus occidentalis ssp. occidentalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Sample Size | Location | Type | Age-Specific | California Counties | Condition |
|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Home Range | 131.92 | 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 | 36 animals | Hastings Natural History Reservation, Carmel Valley | Exposure Factor Datasets | 1 yr | Monterey | nonbreeding |
| Home Range | 76.50 | 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 | 37 animals | Hastings Natural History Reservation, Carmel Valley | Exposure Factor Datasets | 1 yr | Monterey | nonbreeding |
Desert Sideblotched Lizard (Uta stansburiana ssp. stejnegeri)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| 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 |
Red-spotted Garter Snake (Thamnophis sirtalis ssp. concinnus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Age at Sexual Maturity | 2 | yr | Female | Adult | Not Reported | Willamette Valley | Exposure Factor Datasets | |
| Clutch or Litter Size | 8.2 | determined by palpation | young/litter | Female | Adult | 18 | 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 | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | g | Both Male and Female | Not Reported | 60 | captured at Winnipeg, Manitoba | Exposure Factor Datasets | Laboratory | ||
| Metabolic Rate | see citation | figure of oxygen consumption at 5-27C | ml O2/g/hr | Both Male and Female | Not Reported | 60 | captured at Winnipeg, Manitoba | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | Apr. - May | time of breeding | Both Male and Female | Adult | 5/sampling time | Manitoba | Exposure Factor Datasets | CANADA |
Eastern Garter Snake (Thamnophis sirtalis ssp. sirtalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 52.1 | g | Female | Adult | 3 | captured in Michigan and Ohio | Exposure Factor Datasets | non-pregnant | 4.4 SE | Laboratory | |
| Metabolic Rate | 0.059 | resting oxygen consumption at 25C | cm3 O2 STP/hr/g | Male | Adult | 6 | captured in Michigan and Ohio | Exposure Factor Datasets | 0.001 SE | Laboratory | |
| Metabolic Rate | 0.054 | resting oxygen consumption at 25C | cm3 O2 STP/hr/g | Female | Adult | 3 | captured in Michigan and Ohio | Exposure Factor Datasets | non-pregnant | 0.011 SE | Laboratory |
Giant Garter Snake (Thamnophis gigas)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 23.1 | eggs/clutch | Female | Adult | 18 | captured in Fresno and Sacramento counties, CA | Exposure Factor Datasets | Laboratory |
Valley Garter Snake (Thamnophis sirtalis ssp. fitchi)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 11.32 | based on embryo count | eggs/litter | Female | Adult | 22 | Exposure Factor Datasets | 0.98 |
