Lizards and snakes (Squamata)
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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties | Condition |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Home Range | 73.10 | 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 | Adult | 14 animals | Hastings Natural History Reservation, Carmel Valley | Exposure Factor Datasets | 2+ yr | Monterey | nonbreeding |
Desert Sideblotched Lizard (Uta stansburiana ssp. stejnegeri)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 4 | eggs/female | Female | Adult | Not Reported | Palo Duro Canyon, Armstrong County (elev., 2000-3600 ft); Kermit , Winkler County and Monahans, Ward County (elev., 2800 ft) | Exposure Factor Datasets |
| Clutches or Litters per year | 3 | clutches/yr | Female | Adult | Not Reported | Palo Duro Canyon, Armstrong County (elev., 2000-3600 ft); Kermit , Winkler County and Monahans, Ward County (elev., 2800 ft) | Exposure Factor Datasets |
Valley Garter Snake (Thamnophis sirtalis ssp. fitchi)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Food Ingestion Rate | 14 | average % of their body mass in frogs ingested per day, estimated from field metabolic rate | % | Both Male and Female | Adult | 72 | Eagle Lake (elev., 1800 m) | Exposure Factor Datasets | Lassen |
Red-sided Garter Snake (Thamnophis sirtalis ssp. parietalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | BW = -201.07 + 4.78SVL | relationship between body weight (BW, g, 50-175g) and snout-vent length (SVL, cm, 55-75cm) for vitellogenic and non-vitellogenic females in 1985 (r2 = 0.874) | g | Female | Adult | 32 | Manitoba | Exposure Factor Datasets | CANADA |
| Body Weight - Mean | BW = -137.32 + 3.73SVL | relationship between body weight (BW, g, 50-175g) and snout-vent length (SVL, cm, 55-75cm) for vitellogenic and non-vitellogenic females in 1987 (r2 = 0.698) | g | Female | Adult | 110 | Manitoba | Exposure Factor Datasets | CANADA |
| Time of Torpor or Hibernation | Sept. - Mar. | Female | Adult | 218 | Manitoba | Exposure Factor Datasets | CANADA |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Countries |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of means | g | Male | Adult | 5 animals/6 sampling dates | Exposure Factor Datasets | 1-24 d post-emergence | 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 | 94.2 | g | Female | Adult | 6 | captured in Michigan and Ohio | Exposure Factor Datasets | pregnant | 10.2 SE | Laboratory | |
| Metabolic Rate | 0.095 | resting oxygen consumption at 25C | cm3 O2 STP/hr/g | Female | Adult | 6 | captured in Michigan and Ohio | Exposure Factor Datasets | pregnant | 0.010 SE | Laboratory |
| Body Weight - Mean | 1.66 | g | Not Reported | Neonate | 8 | captured in Michigan and Ohio | Exposure Factor Datasets | 0.07 SE | Laboratory |
San Francisco Garter Snake (Thamnophis sirtalis ssp. tetrataenia)
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | Oct. - Nov. | Both Male and Female | Adult | 2 mating masses | San Francisco Peninsula | Exposure Factor Datasets | San Mateo |
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 | July - Aug. | Both Male and Female | Hatchling | Not Reported | Pixley National Wildlife Refuge, Delano and Kettleman Hills | Exposure Factor Datasets | Kern, Kings, Tulare | ||
| Time of Mating/ Laying | May - July | time of laying | Female | Adult | Not Reported | Pixley National Wildlife Refuge, Delano and Kettleman Hills | Exposure Factor Datasets | Kern, Kings, Tulare | |
| Duration of Incubation or Gestation | 4 | wks | Both Male and Female | Embryo | Not Reported | Pixley National Wildlife Refuge, Delano and Kettleman Hills | Exposure Factor Datasets | Kern, Kings, Tulare |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | see citation | figure of seasonal changes in body weight | g | Not Reported | Not Reported | Not Reported | Elkhorn Plain (elev., 685-765m) | Exposure Factor Datasets | San Luis Obispo |
| Time of Mating/ Laying | May - June | time of laying | Female | Adult | Not Reported | Elkhorn Plain (elev., 685-765m) | Exposure Factor Datasets | San Luis Obispo |
Desert Iguana (Dipsosaurus dorsalis)
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of averages for 3 sites | g | Female | Adult | Not Reported | Coachella Valley | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties |
|---|---|---|---|---|---|---|---|---|---|---|
| Survival/ Mortality | 60 | average annual survivorship estimated for 4 yrs | % | Both Male and Female | Adult | 5-38 marked/yr | Thousand Palms | Exposure Factor Datasets | > 31 mo | Riverside |
| Age at Sexual Maturity | mo | Not Reported | 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 | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 0.357 | average field metabolic rate (measured using doubly-labeled water) | ml CO2/g/hr | Not Reported | Juvenile | 8 | Thousand Palms | Exposure Factor Datasets | Riverside | 0.024 SE | |
| Metabolic Rate | 0.110 (30C); 0.217 (35C); 0.238 (40C) | average resting metabolic rate (oxygen consumption) measured at 30-40C | ml O2/g/hr | Not Reported | Adult | 5 | Thousand Palms | Exposure Factor Datasets | Laboratory | ||
| Metabolic Rate | 0.180 (30C); 0.250 (35C); 0.279 (40C) | average resting metabolic rate (oxygen consumption) measured at 30-40C | ml O2/g/hr | Not Reported | Hatchling | 5 | Thousand Palms | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | log weight = 0.011 SVL + 0.46 | relationship between body weight (g) and snout-vent length (SVL, mm) | g | Male | Adult | Not Reported | Palm Desert | Exposure Factor Datasets |
| Body Weight - Mean | log weight = 0.011 SVL + 0.05 | relationship between body weight (g) and snout-vent length (SVL, mm) | g | Not Reported | Juvenile | Not Reported | Palm Desert | Exposure Factor Datasets |
| Body Weight - Mean | log weight = 0.017 SVL - 0.22 | 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 Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Age at Sexual Maturity | 45 | minimum adult size at first reproduction, estimated from growth rate | mo | Not Reported | Adult | 22 | Phoenix South Mountain, Maricopa County | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 35.2 | g | Both Male and Female | Adult | 30 | animals originally captured at Riverside County, CA | Exposure Factor Datasets | Laboratory | |
| Metabolic Rate | see citation | figure of standard and maximal activity metabolic rates at 25-45C | cm3 O2/g/hr | Both Male and Female | Adult | 30 | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 86 | incubation period at 28C | d | Not Reported | Embryo | 12 | Exposure Factor Datasets | Laboratory | |
| Duration of Incubation or Gestation | 44 | incubation period at 36C | d | Not Reported | Embryo | 60 | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 1462 | home range estimated using the convex polygon method | m2 | Male | Adult | 20 | Thousand Palms | Exposure Factor Datasets | Riverside |
Western Fence Lizard (Sceloporus occidentalis)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 13.8 | g | Not Reported | Adult | 8 | Victorville | Exposure Factor Datasets | hibernating |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | OC = 0.23(BW)^0.67 | equation for relating resting oxygen consumption (OC; ml O2/hr) to body mass (BW; g) @ 25C | ml O2/g/hr | Both Male and Female | Adult | 154 animals | Sierra Nevada (elev., 150 and 1500 m) | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| 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 | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 6.50 | eggs/clutch | Female | Adult | 8 | "lowland" habitat | Exposure Factor Datasets | Kern | 0.53 |
| Clutch or Litter Size | 8.50 | eggs/clutch | Female | Adult | 16 | "montane" habitat (elev., 1528m) | Exposure Factor Datasets | Kern | 0.32 |
| Clutch or Litter Size | 7.00 | eggs/clutch | Female | Adult | 8 | "lowland" habitat | Exposure Factor Datasets | San Diego | 0.50 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 13.1 | g | Not Reported | Adult | 65 | Exposure Factor Datasets | Orange, Riverside | ||
| Metabolic Rate | see citation | figure of standard metabolic rate measured as resting oxygen consumption at various temperatures (20-40C) | cc O2/g/hr | Not Reported | Adult | 31 | Exposure Factor Datasets | Orange, Riverside |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Sept. - Apr. | Both Male and Female | Both Adults and Juveniles | Not Reported | yellow pine forest, central Sierra Nevada (elev., 1500m) | Exposure Factor Datasets | ||
| Clutch or Litter Size | 11.3 | eggs/clutch | Female | Adult | 48 | yellow pine forest, central Sierra Nevada (elev., 1500m) | Exposure Factor Datasets | 0.41SE |
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| Clutch or Litter Size | eggs/clutch | Female | Adult | 39 - 59 | Table Mountain, Wrightwood (elev., 2200m) and Mojave desert, Pearblossom (elev., 1330m) | 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 (2779); Arthropod Total (658); Vertebrate Total (2); Plant Total (2113): Includes; Insects, Coleoptera (49); Hemiptera (27); Homoptera (503); Hymenoptera (59); Lepidoptera (10); Neuroptera (2); Orthoptera (13); Lizards, Phrynosomatidae (2); Plants, Asteraceae (70); Boraginaceae (3); Euphorbiaceae (6); Fabaceae (107) and Loasaceae (1927) | total numbers of food items found in stomach contents | # | Male | Adult | 23 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside |
| Dietary Composition | Overall Total (629); Arthropod Total (201); Vertebrate Total (1); Plant Total (332): Includes; Insects, Coleoptera (28); Diptera (5); Hemiptera (25); Homoptera (177); Hymenoptera (48); Lepidoptera (3); Orthoptera (4); Snakes, Crotalidae (1); Plants, Asteraceae (42); Boraginaceae (8); Fabaceae (71) and Loasaceae (211) | total numbers of food items found in stomach contents | # | Female | Adult | 13 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside |
| Dietary Composition | Overall Total (673); Arthropod Total (268); Vertebrate Total (2); Plant Total (360): Includes; Insects, Coleoptera (12); Diptera (1); Hemiptera (16); Homoptera (10); Hymenoptera (259); Lepidoptera (1); Neuroptera (3); Orthoptera (1); Lizards, Phrynosomatidae (1); Snakes, Crotalidae (1); Plants, Asteraceae (107); Boraginaceae (99); Euphorbiaceae (2); Fabaceae (33) and Loasaceae (119) | total numbers of food items found in stomach contents | # | Male | Adult | 17 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside |
Sideblotched Lizard (Uta stansburiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 1300 | average home range, estimated using minimum polygon method (mark and recapture technique) | sq. ft. | Both Male and Female | Juvenile | 357 lizards | Exposure Factor Datasets | ||
| Home Range | 0.23 | home range estimated using probability density function (95%) | acre | Female | Adult | Not Reported | Mesa County | Exposure Factor Datasets | |
| Food Ingestion Rate | 0.02 | total volume of food eaten | g/d | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets | ||
| Clutch or Litter Size | range of monthly average clutch sizes over 3 yrs | eggs/clutch | Female | Adult | 13-48 lizards/10 dates | Exposure Factor Datasets | |||
| Longevity | 100 | maximum longevity observed for marked hatchlings | wks | Not Reported | Both Adults and Juveniles | Not Reported | Exposure Factor Datasets | ||
| Survival/ Mortality | range of % "survival to next season" over 5 yrs at 2 sites | % | Both Male and Female | Adult | 39-110/date and site | Exposure Factor Datasets | 9 mo | ||
| Clutches or Litters per year | at least 3 | clutches/yr | Female | Adult | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 8.5 | field metabolic rate (estimated by injecting with doubly-labelled water); also expressed as 218 +/- 141SE kJ/kg/d | L CO2/kg/d | Both Male and Female | Adult | 5 | El Comitan, Baja California Sur | Exposure Factor Datasets | MEXICO | 5.5 SE |
| Dietary Composition | Scorpionida (1.22%); Araneae (22.72%); Solifugae (2.78%); Thysanura (0.28%); Orthoptera (5.66%); Isoptera (2.31%); Homoptera (0.38%); Neuroptera (7.93%); Coleoptera (7.86%); Trichoptera (0.62%); Lepidoptera (44.76%); Hymenoptera (2.97%) | % frequency of prey (by volume) in stomach contents | % | Both Male and Female | Adult | 27 | El Comitan, Baja California Sur | Exposure Factor Datasets | MEXICO | |
| Body Weight - Mean | 2.4 | g | Both Male and Female | Adult | 5 | El Comitan, Baja California Sur | Exposure Factor Datasets | MEXICO | 0.4 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| 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 |
| Growth Rate | 0.17 | growth rate measured as increase in snout-vent length (mm) | mm/d | Female | Hatchling | Not Reported | Deschutes River, Jefferson county (elev., 732m) | Exposure Factor Datasets |
| Body Weight - Mean | g | Both Male and Female | Adult | 11 | 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 |
|---|---|---|---|---|---|---|---|---|
| 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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| 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) |
| Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| Clutches or Litters per year | clutches/yr | Female | Adult | Not Reported | 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 | Chuckwalla Mountains (elev., 460m), [lat., 33^o37'N; long., 115^o18' W] | Exposure Factor Datasets | Riverside |
| Population Density | range of average densities estimated over 2 yrs | #/ha | Not Reported | Not Reported | Not Reported | Panamint Valley (elev., 790m), [lat., 36^o20'N; long., 117^o30' W] | Exposure Factor Datasets | Inyo |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | range of monthly means for 2 size classes measured over 3 yrs. | eggs/clutch | Female | Adult | 3 - 95 clutches/mo | Rock Valley, Nye County | Exposure Factor Datasets |
Island Night Lizard (Xantusia riversiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of average male and average female weights | g | Both Male and Female | Adult | 258 | Santa Barbara Island | Exposure Factor Datasets | non-pregnant | ||
| Body Weight - Mean | BW = -0.26 + 0.000028(SVL)^3 | lizard body weight (BW; g) as an exponential function of snout-vent length (SVL,mm) | g | Both Male and Female | Both Adults and Juveniles | 792 | Santa Barbara Island | Exposure Factor Datasets | non-pregnant | |
| Age at Sexual Maturity | 2.5 | yr | Male | Adult | Not Reported | Santa Barbara Island | Exposure Factor Datasets | 0.2 SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | range of average number of young produced/female at 3 sites | young/female | Female | Adult | 2-25 | San Clemente, San Nicolas and Santa Barbara Islands | Exposure Factor Datasets | |
| Age at Sexual Maturity | yr | Both Male and Female | Adult | Not Reported | San Clemente, San Nicolas and Santa Barbara Islands | Exposure Factor Datasets | ||
| Duration of Incubation or Gestation | 14 | wks | Not Reported | Embryo | 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 | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | 0.024 (15C); 0.036 (20C); 0.058 (25C); 0.081 (30C); 0.146 (35C) | mean oxygen consumption measured at various temperatures (15-35C) during the scotophase of the diel cycle | cc O2/g/hr | Not Reported | Adult | 10-29/temp. group | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|
| Clutch or Litter Size | review | Female | Adult | Not Reported | Exposure Factor Datasets |
Gopher Snake (Pituophis catenifer formerly Pituophis melanoleucus)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error | Lab |
|---|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 8.8 | eggs/clutch | Female | Adult | 38 | Exposure Factor Datasets | Laboratory | |||
| Body Weight - Mean | 33.5 | g | Both Male and Female | Juvenile | 68 | Exposure Factor Datasets | 15 d | 6 SE | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Metabolic Rate | OC = 0.324/(37.4 - T) | resting oxygen consumption (OC) as a function of body temperature (T; 10-35C) | ml O2/g/hr | Not Reported | Adult | 14 | Exposure Factor Datasets | Laboratory | |
| Metabolic Rate | OC = 0.198T - 0.126 | active oxygen consumption (OC) as a function of body temperature (T; 10-29C) | ml O2/g/hr | Not Reported | Adult | 14 | Exposure Factor Datasets | Laboratory | |
| Metabolic Rate | OC = 0.0101T + 0.162 | active oxygen consumption (OC) as a function of body temperature (T; 29-35C) | ml O2/g/hr | Not Reported | Adult | 14 | Exposure Factor Datasets | Laboratory |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Cottontail (37.1%); Ground squirrel (27.9%); Woodrat (18.6%); Bird egg (5.3%); Gopher (4.0%); Other (7.1%) | percentage of total prey weight palped from stomachs | % | Not Reported | Not Reported | 70 prey items | San Joaquin Experimental Range | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Townsend ground squirrel (10.6%); Mountain conttontail (11.6%); Deer mouse (43.3%); Ord kangaroo rat (5.8%); Great Basin pocket mouse (5.8%); Montane vole (9.6%); House mouse (6.7%); Other species (6.7%) | % frequency of prey based on stomach contents and scats | % | Not Reported | Not Reported | 104 prey items/455 snakes | Snake River Birds of Prey Area, southwestern ID | Exposure Factor Datasets |
San Joaquin Fence Lizard (Sceloporus occidentalis ssp. biseriatus)
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 7.23 | eggs/clutch | Female | Adult | 43 | Puente Hills, Whittier (elev., 150 m) | Exposure Factor Datasets | Los Angeles | 3.30SD |
| Clutch or Litter Size | 8.70 | eggs/clutch | Female | Adult | 41 | San Gabriel Mountains, Crystal Lake (elev., 1584 m) | Exposure Factor Datasets | Los Angeles | 2.0 SD |
| Time of Hatching or Parturition | July | Not Reported | Hatchling | Not Reported | Puente Hills, Whittier (elev., 150 m) | Exposure Factor Datasets | Los Angeles |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Duration of Incubation or Gestation | 13 | wks | Not Reported | Embryo | Not Reported | Puente Hills and San Gabriel River, Whittier | Exposure Factor Datasets | Los Angeles |
| Age at Sexual Maturity | 1-2 | yrs | Female | Adult | Not Reported | Puente Hills and San Gabriel River, Whittier | Exposure Factor Datasets | Los Angeles |
Northern Sideblotched Lizard (Uta stansburiana ssp. stansburiana)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | 16.82 | home range estimated by density probability function method (ranged 99.0% of the time in this area size) | acres | Not Reported | Juvenile | 14 | United States Atomic Energy Commission Nevada Test Site | Exposure Factor Datasets | 0.42 |
| Home Range | 27.36 | home range estimated by density probability function method (ranged 99.0% of the time in this area size) | acres | Female | Adult | 16 | United States Atomic Energy Commission Nevada Test Site | Exposure Factor Datasets | 0.68 |
| Home Range | 39.30 | home range estimated by density probability function method (ranged 99.0% of the time in this area size) | acres | Male | Adult | 24 | United States Atomic Energy Commission Nevada Test Site | Exposure Factor Datasets | 0.98 |
California Red-sided Garter Snake (Thamnophis sirtalis ssp. infernalis)
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | increase in body mass on earthworm or mosquitofish diets | g/d | Not Reported | Juvenile | 13 | captive-born to female from Humboldt County | Exposure Factor Datasets | 0 - 4 mo | Laboratory |
Common Garter Snake (Thamnophis sirtalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Slug (1.4%); Earthworm (23.6%); Frog, Rana (6.9%); Toad, Bufo and Scaphiopus (30.5%); Tree Toad (20.8%); Leech (4.0%); Tadpole (10%); Minnow (1.4%); Unidentified fish (1.4%) | % of total recorded food items | % | Not Reported | Not Reported | 48 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | range of site means based on sum of live and dead young and undeveloped eggs at parturition | young/litter | Female | Adult | 4 - 30/site | Exposure Factor Datasets | CANADA |
Alameda Whipsnake (Masticophis lateralis ssp. euryxanthus)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| Time of Mating/ Laying | May | time of mating | Both Male and Female | Adult | 4 | outdoor enclosures, Hayward, CA | Exposure Factor Datasets | Laboratory | |
| Clutch or Litter Size | eggs/female | Female | Adult | 2 | outdoor enclosures, Hayward, CA | Exposure Factor Datasets | Laboratory |
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