Sceloporus occidentalis
Western Fence Lizard (Sceloporus occidentalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition | 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 | ||
| Body Weight - Mean | 4.4 | g | Not Reported | Juvenile | 5 | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | 0.5SE | ||
| Body Weight - Mean | 11.5 | g | Both Male and Female | Adult | 20 | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | 0.4SE | ||
| Metabolic Rate | 0.220 | 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 active | 0.019SE |
| 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 | |
| Metabolic Rate | 0.185 | resting metabolic rate at 35C, estimated as carbon dioxide production rate | ml CO2/g/hr | Both Male and Female | Adult | 11 | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | reproductively active | 0.015SE |
| Metabolic Rate | 0.300 | resting metabolic rate at 35C, 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 | 0.052SE | |
| Metabolic Rate | 0.192 | resting metabolic rate at 35C, estimated as carbon dioxide production rate | ml CO2/g/hr | Both Male and Female | Adult | 19 | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets | reproductively inactive | 0.017SE |
| Metabolic Rate | 0.049 | resting metabolic rate at 20C, 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 inactive | 0.006SE |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| 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 | |||
| Time of Mating/ Laying | June - July | time of laying | Both Male and Female | Adult | Not Reported | central Sierra Nevada (elev., 1500 or 2200m) | Exposure Factor Datasets | ||
| Time of Hatching or Parturition | Aug. - Oct. | time of hatching | Both Male and Female | Hatchling | Not Reported | central Sierra Nevada (elev., 1500 or 2200m) | Exposure Factor Datasets | ||
| Clutches or Litters per year | clutches/yr | Female | Adult | Not Reported | central Sierra Nevada (elev., 1500 or 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 | ||
| 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 | |
| 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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 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 |
| 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 | |
| Metabolic Rate | OC = 1.66W^0.57 | equation relating resting oxygen consumption (OC) to body weight (W, g) at 35C | cc O2/g/hr | Not Reported | Not Reported | 2-5/weight group | Exposure Factor Datasets | Laboratory | |
| Metabolic Rate | OC = 1.76W^0.68 | equation relating resting oxygen consumption (OC) to body weight (W, g) at 40C | 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 | 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 | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Nov-Dec. (begin) | Not Reported | Both Adults and Juveniles | Not Reported | Hastings Reservation, Carmel Valley | Exposure Factor Datasets | Monterey | |
| Age at Sexual Maturity | 22-23 | mo | Both Male and Female | Adult | Not Reported | Hastings Reservation, Carmel Valley | Exposure Factor Datasets | Monterey |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|---|
| Time of Hatching or Parturition | July - Sept. | Not Reported | Hatchling | 93 | Strawberry Canyon, Berkeley Hills | Exposure Factor Datasets | ||
| 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 |
| Clutches or Litters per year | 1 | clutches/yr | Female | Adult | 93 | Strawberry Canyon, Berkeley Hills | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | g | Not Reported | Not Reported | 60 | U.S. International University Campus | Exposure Factor Datasets | San Diego | ||
| 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 | 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 | 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 | 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 | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
|---|---|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Nov.-Mar. | hibernation duration approximates 100 d | Not Reported | Both Adults and Juveniles | >12 | Victorville | Exposure Factor Datasets | ||
| Metabolic Rate | Log OC = 0.044T + 0.64 | regression equation for oxygen consumption (OC in ul O2/g/hr; log base 10) at various temperatures (T, 0 - 15 C) | ul O2/g/hr | Not Reported | Adult | 5-8/temperature | Victorville | Exposure Factor Datasets | hibernating |
| Metabolic Rate | 20 | oxygen consumption measured at 15C | ul O2/g/hr | Not Reported | Adult | 8 | Victorville | Exposure Factor Datasets | hibernating |
| Body Weight - Mean | 13.8 | g | Not Reported | Adult | 8 | Victorville | Exposure Factor Datasets | hibernating |
| 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 |
|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 | 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 |
| 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 | 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 | |
| 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 |
