Clutch or Litter Size
Deer Mouse (Peromyscus maniculatus)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 4.1 | #/litter | Female | Adult | 55 | Anytown (elev., 400 m) | Exposure Factor Datasets | Yolo | 0.2 SE |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
---|---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 4.6 | based on # of implanted embryos; monthly means (Mar. - Nov.) ranged from 4.0 - 5.7 | #/litter | Female | Adult | 96 | western slope of Sierra Nevada (elev., 3500-5000 ft.) | Exposure Factor Datasets | Plumas | 0.11 SE |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 5.27 | mean litter size based upon number of visible embryos | #/litter | Female | Adult | 77 | Gunnison County and Saquache County, (elev., 8500 - 9300 ft.) | Exposure Factor Datasets | 0.13 |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
---|---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 4.52 | based on embryo counts | #/litter | Female | Adult | 57 | University of British Columbia Research Forest | Exposure Factor Datasets | CANADA | 1.16 SD |
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | range of mean litter sizes for 2 yrs; based on embryo counts | #/litter | Female | Adult | 7 - 8 litters | San Juan Mountains (elev., 3200 m) | Exposure Factor Datasets |
Snowy Plover (Charadrius nivosus formerly Charadrius alexandrinus)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.69 (1991), 2.54 (1992) | mean numbers of chicks hatched per successful nest | chicks/nest | Both Male and Female | Hatchling | 26 (1991), 35 (1992) nests | Fuente de Piedra lake, s. Spain | Exposure Factor Datasets | SPAIN |
Deer Mouse (Peromyscus maniculatus ssp. borealis)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 5.25 | #/litter | Female | Adult | 102 | Kananaskis Valley, Alberta [lat., 51 N] | Exposure Factor Datasets | CANADA | 0.09 SE |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 5.25 | #/litter | Female | Adult | 137 | Kananaskis Valley, Alberta (elev., 1370 - 2700m) | Exposure Factor Datasets | CANADA | 0.07 SE |
Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | #/litter | Female | Adult | 8 | captured in Lethbridge, Alberta | Exposure Factor Datasets | Laboratory |
Deer Mouse (Peromyscus maniculatus ssp. sonoriensis)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
---|---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 4.73 | potential litter size estimated using the larger of corpora lutea count or embryo sites | #/litter | Female | Adult | 30 | White Mountain (elev., 7,000 ft) | Exposure Factor Datasets | Mono | 0.67 SE |
Clutch or Litter Size | 4.88 | potential litter size; estimated using the larger of corpora lutea count or embryo sites | #/litter | Female | Adult | 26 | White Mountain (elev.,12,400 ft) | Exposure Factor Datasets | Mono | 0.46 SE |
Clutch or Litter Size | 4.00 | potential litter size estimated using the larger of corpora lutea count or embryo sites | #/litter | Female | Adult | 2 | White Mountain (elev., 4,500 ft) | Exposure Factor Datasets | Mono | 1.00 SE |
Kit Fox (Vulpes macrotis)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.5 | mean litter size | pups | Female | Adult | 8 litters | Exposure Factor Datasets |
Northern Red-legged Frog (Rana aurora) formerly Rana aurora ssp. aurora
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 531 | #/egg mass | Female | Adult | 35 egg masses | Marion Lake, southern British Columbia (elev., 300m) | Exposure Factor Datasets | CANADA | 19 SE |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 680 | # ova/egg mass | Female | Adult | Not Reported | White Rock, British Columbia | Exposure Factor Datasets | CANADA |
Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|
Clutch or Litter Size | #/egg mass | Female | Adult | 6 egg masses | Corvallis | Exposure Factor Datasets |
Western Fence Lizard (Sceloporus occidentalis)
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 | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | 8.2 | eggs/clutch | Female | Adult | Not Reported | Ecology Research Area, University of California, Los Angeles | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 13.7 | estimated by number of developing ova | eggs/clutch | Female | Adult | 7 | Strawberry Canyon, Berkeley Hills | Exposure Factor Datasets |
Blunt-nosed Leopard Lizard (Gambelia sila formerly Gambelia silus)
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
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 |
Sideblotched Lizard (Uta stansburiana)
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | range of average clutch sizes on 8 dates | eggs/clutch | Female | Adult | Not Reported | Exposure Factor Datasets | >12 mo |
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
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 |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 3.5 | eggs/clutch | Female | Adult | 162 | San Gabriel Mountains (elev., 1585-1829m) | Exposure Factor Datasets | Los Angeles |
California Ground Squirrel (Spermophilus beecheyi)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 6.25 | young/litter | Female | Adult | 8 litters | Calaveras Reservoir | Exposure Factor Datasets | Alameda, Santa Clara |
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | based on embryo counts | young/litter | Female | Adult | Not Reported | 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 | 7.5 | estimated from embryo or embryo scar counts | young/litter | Female | Adult | 40 | Hastings Natural History Reservation | Exposure Factor Datasets | Monterey |
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 |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
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 |
Willow Flycatcher (Empidonax traillii)
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | range of clutch sizes | eggs | Female | Adult | 6 nests | Sierra National Forest | Exposure Factor Datasets | Fresno |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 3.68 | mean first clutch size | eggs | Female | Adult | 31 nests | Toledo, Wooster, OH | Exposure Factor Datasets | 0.1 SE |
Clutch or Litter Size | 3.14 | mean clutch size in renests | eggs | Female | Adult | 29 nests | Toledo, Wooster, OH | Exposure Factor Datasets | 0.1 SE |
California Vole (Microtus californicus)
Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | pups/litter | Female | Adult | 35 females | Exposure Factor Datasets | Laboratory |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error | Lab |
---|---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 3.5 | young/litter | Female | Adult | 12 | Exposure Factor Datasets | subadult (4 wks) | 0.6 SE | Laboratory | |
Clutch or Litter Size | 3.3 | young/litter | Female | Adult | 12 | Exposure Factor Datasets | 0.4 SE | Laboratory | ||
Clutch or Litter Size | 3.3 | young/litter | Female | Adult | 12 | Exposure Factor Datasets | subadult (4 wks) | 0.7 SE | Laboratory | |
Clutch or Litter Size | 3.7 | young/litter | Female | Adult | 24 | Exposure Factor Datasets | subadult (4 weeks) | 0.2 SE | Laboratory |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | see citation | figure of mean monthly litter sizes | Female | Adult | 4-33/mo | Orinda, Layfayette, Russell Reservation and Sea Ranch | Exposure Factor Datasets | Contra Costa, Sonoma |
Striped Skunk (Mephitis mephitis)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 5.6 | fetuses | Female | Both Adults and Juveniles | 10 animals | Exposure Factor Datasets | 1-1.5 years | 0.38 SE | |
Clutch or Litter Size | 8.0 | fetuses | Female | Both Adults and Juveniles | 4 animals | Exposure Factor Datasets | >2 years | 1.0 SE | |
Clutch or Litter Size | 6.5 | placental scars | Female | Both Adults and Juveniles | 5 animals | Exposure Factor Datasets | 1-1.5 years | 0.65 SE | |
Clutch or Litter Size | 5.8 | placental scars | Female | Both Adults and Juveniles | 13 animals | Exposure Factor Datasets | > 2 years | 0.66 SE |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error |
---|---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 7.2 | live embryo counts | pups/litter | Female | Adult | 178 females | east-central North Dakota; west -central Minnesota | Exposure Factor Datasets | primarily 1 and 2 years old | 0.4 SE |
Long-tailed Weasel (Mustela frenata)
Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | young/litter | Female | Adult | Not Reported | Exposure Factor Datasets | Laboratory |
San Joaquin Kangaroo Rat (Dipodomys nitratoides)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.3 | pups/litter | Female | Adult | 12 litters | Exposure Factor Datasets | Laboratory |
Coyote (Canis latrans)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 5.0 | estimated by placental scars | young/litter | Female | Adult | 59 | Exposure Factor Datasets |
Loggerhead Shrike (Lanius ludovicianus)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 3.8 | mean clutch size | eggs/clutch | Female | Adult | 24 clutches | Archbold Biological Station, Highlands County | Exposure Factor Datasets | 0.9 SD |
Island Night Lizard (Xantusia riversiana)
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 |
Exposure Endpoint Type | 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 |
Deer Mouse (Peromyscus maniculatus ssp. nebrascensis)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error | Lab |
---|---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 5.14 | litter size at parturition | #/litter | Female | Adult | 104 | captured in Alberta, Canada | Exposure Factor Datasets | 0.14 SE | Laboratory |
Peregrine Falcon (Falco peregrinus)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 3.39 | mean clutch size | eggs/clutch | Female | Adult | 18 clutches | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 3.09 | average number of eggs or downy chicks per pair | eggs or downy chicks/nest | Both Male and Female | Adult | 11 pairs | Yukon River | Exposure Factor Datasets | breeding |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 3.3 | average clutch size | eggs/nest | Female | Adult | 3 breeding pairs | Ojo de Liebre Lagoon, Baja California | Exposure Factor Datasets | MEXICO |
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 |
Least Tern (Sterna antillarum)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.1-2.7 | range of clutch means over 3 years of study | eggs/clutch | Female | Adult | 6-18 clutches/study year | Yellowstone River | Exposure Factor Datasets |
Deer Mouse (Peromyscus maniculatus ssp. bairdii)
Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | #/litter | Female | Adult | Not Reported | Exposure Factor Datasets | Laboratory |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Lab |
---|---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 5.0 | "not high" temperature group | #/litter | Both Male and Female | Neonate | 150 | captured pregnant mice in spring at Ann Arbor, MI | Exposure Factor Datasets | 0 d | Laboratory |
Clutch or Litter Size | 5.6 | "not high" temperature group | #/litter | Both Male and Female | Neonate | 98 | captured pregnant mice during fall at Ann Arbor, MI | Exposure Factor Datasets | 0 d | Laboratory |
Pallid Bat (Antrozous pallidus)
Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|
Clutch or Litter Size | Review | Both Male and Female | Not Reported | Not Reported | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|
Clutch or Litter Size | Review | Both Male and Female | Not Reported | Not Reported | Exposure Factor Datasets |
Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | #/litter | Female | Adult | 40 bats | Napa, CA | Exposure Factor Datasets | Napa |
San Joaquin Kit Fox (Vulpes macrotis ssp. mutica)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 4.1 | mean litter size | pups | Female | Adult | Not Reported | Elk Hills Naval and Buena Vista Petroleum Reserves | Exposure Factor Datasets | Kern |
Coachella Valley Fringe-toed Lizard (Uma inornata)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.8 | eggs/clutch | Female | Adult | 61 | Coachella Valley | Exposure Factor Datasets | Riverside |
Western Grebe (Aechmophorus occidentalis)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.6 | mean clutch size | eggs | Female | Adult | 70 nests | Bear River Migratory Bird Refuge | Exposure Factor Datasets |
Western Skink (Eumeces skiltonianus)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 4.7 | eggs/clutch | Female | Adult | 6 | Exposure Factor Datasets | San Bernardino |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 4.7 | based on oviducal egg counts | eggs/clutch | Female | Adult | 6 | Exposure Factor Datasets | San Bernardino |
Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|
Clutch or Litter Size | eggs/clutch | Female | Adult | 8 clutches | Exposure Factor Datasets |
Sea Otter (Enhydra lutris)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 1 | litter size as indicated by reproductive tract examination | pup | Female | Adult | 278 reproductive tracts | Amchitka Island | Exposure Factor Datasets |
Merriam's Kangaroo Rat (Dipodomys merriami)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.46 | pups/itter | Female | Adult | Not Reported | Owens Valley, Big Pine (lat., 37^o11'N) | Exposure Factor Datasets | Inyo | 0.72 SD |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.6 | estimated by embryo counts | pups /litter | Female | Adult | 163 | Las Vegas Valley, Clark County (elev., 2500 ft) | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Lab |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.8 | young/litter | Female | Adult | Not Reported | captured in Clark County, NV | Exposure Factor Datasets | Laboratory |
Bell's Vireo (Vireo bellii)
Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets | MEXICO, USA |
Stephens' Kangaroo Rat (Dipodomys stephensi)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.67 | young/litter | Female | Adult | 6 | Motte Rimrock Reserve and San Jacinto Wildlife Area | Exposure Factor Datasets | Riverside |
Exposure Endpoint Type | Endpoint Value | Sample Size | Location | Type |
---|---|---|---|---|
Clutch or Litter Size | review | Not Reported | Exposure Factor Datasets |
Burrowing Owl (Athene cunicularia formerly Speotyto cunicularia)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 8.8 | mean clutch size in artificial burrows | eggs/clutch | Female | Adult | 8 clutches, 66 eggs | New Mexico State University | Exposure Factor Datasets | 1.8 SE |
Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets | CANADA, MEXICO, USA |
Mallard duck (Anas platyrhynchos)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | 8.6 | eggs | Female | Adult | 100 | western Edmunds Co., South Dakota | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 8.49 | eggs | Female | Adult | 57 | prairie pothole region of North Dakota | Exposure Factor Datasets | second year | 1.23 SE |
Clutch or Litter Size | 8.96 | eggs | Adult | 78 | prairie pothole region of North Dakota | Exposure Factor Datasets | after second year | 1.38 SE |
Pacific Giant Salamander (Dicamptodon tenebrosus)
Exposure Endpoint Type | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|
Clutch or Litter Size | eggs/clutch | Female | Adult | 2 | Benton County | Exposure Factor Datasets |
Light-footed Clapper Rail (Rallus longirostris ssp. levipes), California Clapper Rail (Rallus longirostris ssp. obsoletus), Yuma Clapper Rail (Rallus longirostris ssp. yumanensis)
Exposure Endpoint Type | Endpoint Value | Location | Type | Countries |
---|---|---|---|---|
Clutch or Litter Size | review | Exposure Factor Datasets | USA | |
Clutch or Litter Size | review | Exposure Factor Datasets | USA |
Little Pocket Mouse (Perognathus longimembris)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 4.75 | pups/litter | Female | Adult | 16 | Owens Valley, Big Pine (lat., 37^o11'N) | Exposure Factor Datasets | Inyo | 0.77 SD |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 5.78 | embryos/litter | Female | Adult | 9 | Floating Island, Tooele County (elev., 1300-1420 m) | Exposure Factor Datasets | 0.22 |
Mourning Dove (Zenaida macroura)
Exposure Endpoint Type | Endpoint Value | Sex | Life Cycle Stage | Sample Size | Location | Type | Countries |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | review | Not Reported | Not Reported | Not Reported | Exposure Factor Datasets | CANADA, MEXICO, USA |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | 1.8 | mean clutch size | Female | Adult | 524 nests | Prairie Island Nuclear Generating Plant | Exposure Factor Datasets |
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2 | clutch size in 97.2% of observed nests | Female | Adult | 1203 nests | J. Clark Salyer National Wildlife Refuge | Exposure Factor Datasets |
Desert Tortoise (Gopherus agassizi)
Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | range of mean clutch size over 3 years in two sample groups | eggs/clutch | Female | Adult | 10-25 | Yucca Mountain, Nye County (elev., 1000-1500m) [lat., 36^o51'; long., 116^o25' W] | 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 | 3 | estimated from eggshell fragments in nest | eggs/nest | Female | Adult | 15 nests | Fremont Valley | Exposure Factor Datasets | Kern |
San Joaquin Fence Lizard (Sceloporus occidentalis ssp. biseriatus)
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 |
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 |
Pacific Treefrog (Pseudacris regilla formerly Hyla regilla)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Error |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 267.7 | eggs/clutch | Female | Adult | 40 | San Diego | Exposure Factor Datasets | 128.7 SD |
Great Horned Owl (Bubo virginianus)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Condition |
---|---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.5 | mean clutch size | eggs/clutch | Female | Adult | 16 nests | Pima and Pinal Counties | Exposure Factor Datasets | breeding |
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|
Clutch or Litter Size | 2.2 | eggs/clutch | Female | Adult | 4 nests | Jackson Hole | Exposure Factor Datasets |
American Kestrel (Falco sparverius)
Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 4.4 | mean clutch size (4 sample years) | eggs/clutch | Female | Adult | 7-23 nests/year | Lucas and Wayne Counties (40deg57'N, 93deg18'W) | Exposure Factor Datasets |
Santa Cruz Long-toed Salamander (Ambystoma macrodactylum ssp. croceum)
Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
---|---|---|---|---|---|---|---|---|
Clutch or Litter Size | 307 | eggs/clutch | Female | Adult | 5 | Valencia Lagoon, Rio Del Mar | Exposure Factor Datasets | Santa Cruz |