California Ground Squirrel (Spermophilus beecheyi)
California Ground Squirrel (Spermophilus beecheyi)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties | Countries |
---|---|---|---|---|---|---|---|---|---|---|---|
Inhalation Rate | 0.4 | Air intake | m3/d | M | Yearling | 7 | Altamont Hills | Exposure Factor Datasets | 9 m | San Joaquin | USA |
Exposure Endpoint Type | Endpoint Value | Sample Size | Location | Type | Countries | Error |
---|---|---|---|---|---|---|
Body Weight - Mean | Historical: 551.97, modern: 527.09 | Historical: 117, modern: 55 | Exposure Factor Datasets | USA | Historical: 124.77, modern: 126.93 |
Chemical | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|
STRYCHNINE | increase at 6.7-44.5 mg/kg bw | Both Male and Female | Not Reported | 3-5/group | Toxicity Factor Datasets | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|---|
SODIUM MONOFLUOROACETATE | 182-1309 ppb wet wt. @ 0.8 mg/kg; 535-9754 ppb wet wt. @ 4.8 mg/kg | range of fluoroacetate residues in brain, caecum, kidney, liver, spleen, muscle and lung tissue of dead squirrels | Not Reported | Adult | 2/dose | Toxicity Factor Datasets | Laboratory |
Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
SODIUM MONOFLUOROACETATE | decrease @ 6.7 kg/ha | population size | Not Reported | Not Reported | 38.7-54.2 mean squirrel population size range | Exeter, Tulare | Toxicity Factor Datasets | Tulare |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Condition | Error |
---|---|---|---|---|---|---|---|---|---|---|
Body Weight - Mean | 814 | Male | Adult | 56 | University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | non-reproductive | ||
Body Weight - Mean | 707 | g | Male | Adult | 306 | University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | reproductively active | |
Clutch or Litter Size | 6.7 | young/litter | Female | Adult | 26 | University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | primiparous | 0.3 SE |
Clutch or Litter Size | 7.9 | young/litter | Female | Adult | 47 | University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | multiparous | 0.3 SE |
Body Weight - Mean | 526 | g | Female | Adult | 233 | University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | non-reproductive | 6 SE |
Body Weight - Mean | 589 | g | Female | Adult | 41 | University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | pregnant | |
Body Weight - Mean | 571 | g | Female | Adult | 100 | University of California, Santa Cruz Campus ( elev., 120 m) [lat., 37^0W; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | lactating |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties |
---|---|---|---|---|---|---|---|---|---|---|
Population Density | 20 | #/acre | Not Reported | Not Reported | 3 counts | Walnut Creek | Exposure Factor Datasets | Contra Costa | ||
Clutches or Litters per year | 1 | litter/yr | Female | Adult | Not Reported | Exposure Factor Datasets | ||||
Clutch or Litter Size | based on embryo counts | young/litter | Female | Adult | Not Reported | Exposure Factor Datasets | ||||
Body Weight - Mean | 61 | g | Not Reported | Juvenile | 1 | Exposure Factor Datasets | 10 d | |||
Longevity | 5 | yrs | Not Reported | Adult | Not Reported | Exposure Factor Datasets | ||||
Body Weight - Mean | 696 | g | Male | Adult | 10 | Exposure Factor Datasets | ||||
Body Weight - Mean | 592 | g | Female | Adult | 10 | Exposure Factor Datasets | ||||
Population Density | 76 | #/acre | Not Reported | Not Reported | 3 counts | Walnut Creek | Exposure Factor Datasets | Contra Costa |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Time of Mating/ Laying | Feb.-Mar. | breeding | Both Male and Female | Adult | Not Reported | Camp Ohlone, East Bay Regional Park District | Exposure Factor Datasets | Alameda | |
Population Density | range over 2 yrs | #/ha | Both Male and Female | Adult | Not Reported | Camp Ohlone, East Bay Regional Park District | Exposure Factor Datasets | Alameda |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|---|---|
Metabolic Rate | see citation | figure of oxygen consumption at ambient temperatures (15-35C) | ml O2/g/hr | Not Reported | Not Reported | 10/group | captured at University of California, Irvine | Exposure Factor Datasets | Laboratory |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties | Error | Lab |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 6.09 | based on embryo and placental scar counts | young/litter | Female | Adult | 148 | Davis and Dixon | Exposure Factor Datasets | Solano, Yolo | |||
Body Weight - Mean | 9.3 | g | Both Male and Female | 34 | Exposure Factor Datasets | 0 wks | Laboratory | |||||
Body Weight - Mean | 64.2 | g | Both Male and Female | 22 | Exposure Factor Datasets | 4 wks | Laboratory | |||||
Body Weight - Mean | 163.4 | g | Both Male and Female | 13 | Exposure Factor Datasets | 7 wks | Laboratory | |||||
Growth Rate | see citation | figure of body weight changes over time | g/d | Both Male and Female | 6 litters | Exposure Factor Datasets | 0-50 d | Laboratory | ||||
Body Weight - Mean | 677 | g | Male | Adult | 61 | Davis and Dixon | Exposure Factor Datasets | Solano, Yolo | 113.5 | |||
Body Weight - Mean | 516 | g | Female | Adult | 112 | Davis and Dixon | Exposure Factor Datasets | Solano, Yolo | 104.5 | |||
Body Weight - Mean | 528 | referred to as "young males" | g | Male | Juvenile | 124 | Davis and Dixon | Exposure Factor Datasets | Solano, Yolo | 208.7 | ||
Body Weight - Mean | 373 | referred to as "young females" | g | Female | Juvenile | 115 | Davis and Dixon | Exposure Factor Datasets | Solano, Yolo | 150.5 | ||
Time of Mating/ Laying | Mar. - Apr. | Both Male and Female | Adult | Not Reported | Davis and Dixon | Exposure Factor Datasets | Solano, Yolo |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Time of Torpor or Hibernation | see citation | figure of seasonal activity patterns, including hibernation | Both Male and Female | Both Adults and Juveniles | Not Reported | Santa Barbara; Bell Ranch; Hastings Reservation | Exposure Factor Datasets | Monterey | |
Age at Sexual Maturity | 9-10 | mo | Both Male and Female | Juvenile | Not Reported | Santa Barbara; Bell Ranch; Hastings Reservation | Exposure Factor Datasets | Monterey |
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | range of means for 2 sites | young/litter | Female | Adult | 9-13/site | Douglas and Benton counties {lat., 43-44.5^oN] | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error | Lab |
---|---|---|---|---|---|---|---|---|---|---|---|
Metabolic Rate | 0.75 | resting oxygen consumption at 25-28C | ml O2/g/ h | Both Male and Female | Adult | 26 | captured at San Joaquin Experimental Range | Exposure Factor Datasets | 0.21 SE | Laboratory | |
Dietary Composition | see citation | list of mean % of 25 items in monthly diets, based on stomach contents | % | Not Reported | Not Reported | 12-40/mo | San Joaquin Experimental Range | Exposure Factor Datasets | Madera |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Condition |
---|---|---|---|---|---|---|---|---|---|---|
Home Range | range of means for 2 yrs | m2 | Female | Adult | 0-12/yr | Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] | Exposure Factor Datasets | Alameda | ||
Home Range | range of means for 2 yrs | m2 | Male | Adult | 11/yr | Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] | Exposure Factor Datasets | Alameda | ||
Home Range | 309.3 | m2 | Male | Adult | 21 | Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] | Exposure Factor Datasets | Alameda | breeding | |
Home Range | 270 | m2 | Male | Adult | 12 | Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] | Exposure Factor Datasets | Alameda | postbreeding | |
Population Density | range of means for 2 yrs | #/ha | Both Male and Female | Adult | Not Reported | Camp Ohlone [lat., 37^o29'N; long., 121^o45'W] | Exposure Factor Datasets | Alameda |
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 monthly changes in body weight | g | Both Male and Female | Both Adults and Juveniles | 2 - 106/sample | Calaveras Reservior | Exposure Factor Datasets | Alameda, Santa Clara |
Body Weight - Mean | g | Both Male and Female | Adult | Not Reported | Calaveras Reservoir | Exposure Factor Datasets | Alameda, Santa Clara | ||
Longevity | 3+ | oldest individuals recaptured | yrs | Male | Adult | 2 | Calaveras Reservoir | Exposure Factor Datasets | Alameda, Santa Clara |
Home Range | 0.36 | above ground area occupied for at least one mo | acres | Male | Adult | 21 | Calaveras Reservoir | Exposure Factor Datasets | Alameda, Santa Clara |
Home Range | 0.59 | above ground area occupied for at least one mo | acres | Female | Adult | 51 | Calaveras Reservoir | Exposure Factor Datasets | Alameda, Santa Clara |
Time of Molt | May | Both Male and Female | Adult | Not Reported | Calaveras Reservoir | Exposure Factor Datasets | Alameda, Santa Clara | ||
Population Density | 7 | #/acre | Both Male and Female | Both Adults and Juveniles | Not Reported | Calaveras Reservoir | Exposure Factor Datasets | Alameda, Santa Clara | |
Clutches or Litters per year | 1 | litters/yr | Female | Adult | Not Reported | Calaveras Reservoir | Exposure Factor Datasets | Alameda, Santa Clara | |
Clutch or Litter Size | 6.25 | young/litter | Female | Adult | 8 litters | Calaveras Reservoir | Exposure Factor Datasets | Alameda, Santa Clara |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Time of Migration or Dispersal | June - Aug. | dispersal of young | Both Male and Female | Juvenile | Not Reported | Hastings Natural History Reservation | Exposure Factor Datasets | Monterey |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|---|
Food Ingestion Rate | 22.5 | g dry wheat/squirrel x day | Both Male and Female | Both Adults and Juveniles | 9 animals | Exposure Factor Datasets | Laboratory | |||
Body Weight - Mean | range of monthly mean weights over 4 yrs | g | Female | Adult | 5 - 58/mo | San Joaquin Experimental Range | Exposure Factor Datasets | |||
Body Weight - Mean | range of monthly mean weights over 4 yrs | g | Male | Adult | 4 - 63/mo | San Joaquin Experimental Range | Exposure Factor Datasets | |||
Body Weight - Mean | 8.9 | weight at birth | g | Not Reported | Juvenile | 6 litters (42 animals) | Exposure Factor Datasets | 0 d | Laboratory | |
Population Density | 2.3 | five year average | #/acre | Both Male and Female | Adult | 275 | San Joaquin Experimental Range | Exposure Factor Datasets | ||
Food Ingestion Rate | range of total food weight for observed individuals | g dry wt/d | Both Male and Female | Adult | 6 | San Joaquin Experimental Range | Exposure Factor Datasets | |||
Body Weight - Mean | 100 | weight of young at first appearance above ground | g | Not Reported | Juvenile | Not Reported | San Joaquin Experimental Range | Exposure Factor Datasets | ||
Time of Mating/ Laying | Jan. - Feb. | Both Male and Female | Adult | San Joaquin Experimental Range | Exposure Factor Datasets | |||||
Survival/ Mortality | % tagged young surviving to following year to become breeding adults; range over 3 yrs | % | Both Male and Female | Juvenile | 321 - 339/yr | San Joaquin Experimental Range | Exposure Factor Datasets | |||
Home Range | 400 | diameter of "typical" home range | ft | Both Male and Female | Both Adults and Juveniles | Not Reported | San Joaquin Experimental Range | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | range of means | embryos/female | Female | Adult | Not Reported | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
---|---|---|---|---|---|---|---|---|---|
Home Range | 5466.78 | m2 | Male | Adult | 2 | Capay (elev., 305 m) | Exposure Factor Datasets | Yolo | 1897.19 SD |
Home Range | 4217.07 | m2 | Female | Adult | 5 | Capay (elev., 305 m) | Exposure Factor Datasets | Yolo | 1515.67 SD |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Duration of Incubation or Gestation | 28-30 | d | Female | Adult | 128 | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | |
Age at Fledging, Metamorphosis, Weaning | 5-6 | wks | Not Reported | Juvenile | Not Reported | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | |
Time of Torpor or Hibernation | May/June - Oct. | months of estivation | Male | Adult | 144 | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | |
Time of Torpor or Hibernation | July - Dec. | months of estivation | Female | Adult | 128 | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | |
Time of Mating/ Laying | Feb. - Mar. | Both Male and Female | Adult | Not Reported | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | ||
Age at Sexual Maturity | 1 | yr | Both Male and Female | Adult | Not Reported | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | |
Clutches or Litters per year | 1 | litter/yr | Female | Adult | 128 | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Body Weight - Mean | 512.4 | g | Male | Not Reported | 397 | Hastings Natural History Reservation | Exposure Factor Datasets | Monterey | |
Body Weight - Mean | 397.3 | g | Female | Not Reported | 373 | Hastings Natural History Reservation | Exposure Factor Datasets | Monterey | |
Clutch or Litter Size | 7.5 | estimated from embryo or embryo scar counts | young/litter | Female | Adult | 40 | Hastings Natural History Reservation | Exposure Factor Datasets | Monterey |
Longevity | 5 | longest record of lifespan | yrs | Male | Adult | Not Reported | Hastings Natural History Reservation | Exposure Factor Datasets | Monterey |
Time of Molt | June | molt of juvenile or adult pelage | Both Male and Female | Both Adults and Juveniles | Not Reported | Hastings Natural History Reservation | Exposure Factor Datasets | Monterey |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | embryos/female | Female | Adult | Not Reported | Coho creek | Exposure Factor Datasets | Tulare | ||
Time of Mating/ Laying | Feb. - Apr. | Both Male and Female | Adult | Not Reported | Coho creek | Exposure Factor Datasets | Tulare | ||
Clutches or Litters per year | evidence for 2nd litter in 20% of reproductively active females | litters/yr | Female | Adult | Not Reported | Coho creek | Exposure Factor Datasets | Tulare |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error | Lab |
---|---|---|---|---|---|---|---|---|---|
Body Weight - Mean | 531 | g | Not Reported | Not Reported | 6 | captured at University of California, Riverside | Exposure Factor Datasets | 75 | Laboratory |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Body Weight - Mean | 599.6 | g | Not Reported | Not Reported | 10 | University of California, Irvine | Exposure Factor Datasets | Orange |
Body Weight - Mean | 402.3 | g | Not Reported | Not Reported | 10 | University of California, Irvine | Exposure Factor Datasets | Orange |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
---|---|---|---|---|---|---|---|---|---|
Population Density | 32.0 | #/ha | Not Reported | Adult | 5 study sites | Concord Naval Weapons Station | Exposure Factor Datasets | Contra Costa | 16.23 SD |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Condition |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 8.3 | young/litter | Female | Adult | 20 | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | multiparous |
Clutch or Litter Size | 6.9 | young/litter | Female | Adult | 14 | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz | primiparous |
Time of Molt | April; June; July | Not Reported | Not Reported | Not Reported | University of California, Santa Cruz Campus [lat., 37^oN; long., 122^oW] | Exposure Factor Datasets | Santa Cruz |