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| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | northern anchovy (65%); Pacific Whiting (52%); market squid (13%) | % occurrence of most frequent prey in scats | % | Female | Adult | Adams Cove, San Miguel Island [lat., 34^o01'55"N; long., 120^o26'25" W] | 23 animals | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Body Weight - Mean | neonate weight | 14-17 | lbs | Not Reported | Neonate | 16 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Survival/ Mortality | 66 | mean annual survivorship for animals >30 d | 14-100 | % | Not Reported | Juvenile | captive in British facilities | 38 births/10 yr | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | northern anchovy (50.6%); Pacific whiting (29.3%); jack mackerel (27.9%); rockfish (25.9%); Pacific mackerel (11.3%); unid. fishes (6.6%); market squid (21.9%); octopus (6.4%); squid, Onychoteuthis (4.7%); squid, Abraliopsis (2.2%); pelagic red crab (10.8%) | % frequency of occurrence of major (>2%) prey in scats | % | Not Reported | Not Reported | San Nicholas Island | 1232 scats | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Error | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Food Ingestion Rate | 723 | daily milk intake | 31.0 SE | g/d | Male | Pup | San Nicolas Island [lat., 33^oW; long., 119^oW] | 24 | Exposure Factor Datasets | |
| Food Ingestion Rate | 609 | daily milk intake | 24.0 SE | g/d | Female | Pup | San Nicolas Island [lat., 33^oW; long., 119^oW] | 19 | Exposure Factor Datasets | |
| Body Fat (total or %) | 18.7 | % | Male | Pup | San Nicolas Island [lat., 33^oW; long., 119^oW] | 1 | Exposure Factor Datasets | |||
| Body Fat (total or %) | 19.3 | % | Female | Pup | San Nicolas Island [lat., 33^oW; long., 119^oW] | 1 | Exposure Factor Datasets | |||
| Water Ingestion Rate | 651 | total daily water intake derived from sum of milk water intake and metabolic water production | 27.9 SE | g/d | Male | Pup | San Nicolas Island [lat., 33^oW; long., 119^oW] | 24 | Exposure Factor Datasets | |
| Food Ingestion Rate | daily energy intake estimated from milk intake; range of means for 2 yrs | 2144 - 2636 | kcal/d | Male | Pup | San Nicolas Island [lat., 33^oW; long., 119^oW] | 5-9/yr | Exposure Factor Datasets | ||
| Food Ingestion Rate | daily energy intake estimated from milk intake; range of means for 2 yrs | 2032 - 2152 | kcal/d | Female | Pup | San Nicolas Island [lat., 33^oW; long., 119^oW] | 1-8/yr | Exposure Factor Datasets | ||
| Growth Rate | daily weight gain; range of means for 2 yrs | 92.4 - 120.6 | g/d | Male | Pup | San Nicolas Island [lat., 33^oW; long., 119^oW] | 5-9/yr | Exposure Factor Datasets | ||
| Growth Rate | daily weight gain; range of means for 2 yrs | 95.0 - 109.1 | g/d | Female | Pup | San Nicolas Island [lat., 33^oW; long., 119^oW] | 4-8/yr | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Error | Range | Units | Sex | Life Cycle Stage | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 32.2 | 1.6 SE | 25.7-38.1 | kg | Both Male and Female | Juvenile | 6 | Exposure Factor Datasets | |
| Metabolic Rate | 5.1 | resting metabolic rate | 0.4 SE | ml O2/min/kg | Both Male and Female | Juvenile | 6 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Home Range | review | reported home range for males was 957m2 for males and 244 m2 for females (from unpublished reports) | Both Male and Female | Not Reported | Caswell Memorial State Park | Not Reported | Exposure Factor Datasets |
| Population Density | review | reported overall population density at carrying capacity is 3 animals/ha (from unpublished reports) | Both Male and Female | Not Reported | Caswell Memorial State Park | Not Reported | Exposure Factor Datasets |
| Time of Mating/ Laying | review | reported breeding season occurs from January to May (from unpublished reports) | Both Male and Female | Adult | Caswell Memorial State Park | Not Reported | Exposure Factor Datasets |
| Clutch or Litter Size | review | reported average of 9-16 young/female/yr (data source not specified) | Female | Adult | Not Reported | Exposure Factor Datasets | |
| Clutches or Litters per year | review | reported 3-4 litters per season (data source not specified) | Female | Adult | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Grasses (51.2%); Forbs (45.4%) | cumulative dietary frequency estimated from stomach contents (sum of all fragments of a plant species divided by total # plant fragments) | % | Not Reported | Not Reported | Castro County, range playa basins | 172 | Exposure Factor Datasets |
| Dietary Composition | Grasses (32.1%); Forbs (66%) | cumulative dietary frequency estimated from stomach contents (sum of all fragments of a plant species divided by total # plant fragments) | % | Not Reported | Not Reported | Castro County, agricultural playa basins | 172 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Grasses (37.9%); Forbs (41.3%); Shrubs (20.8%) | % total dietary bulk (volume), estimated from stomach contents | % | Not Reported | Not Reported | Sugarloaf Mountain, Maricopa County (elev., 850m) | 97 | Exposure Factor Datasets | |
| Clutch or Litter Size | 3.7 | 2 - 6 | young/litter | Female | Adult | Sugarloaf Mountain, Maricopa County (elev., 850m) | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Dietary Composition | crabs, California horn snails, isopods, crayfish, decapods, beetles | prey items in regurgitated pellets, in order of frequency of occurence | Not Reported | Adult | upper Newport Bay | 18 pellets | Exposure Factor Datasets |
| Dietary Composition | amphipods, garden snails, crane flies, house mice, California voles | unquantified dietary items identified in regurgitated pellets | Not Reported | Adult | upper Newport Bay | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 725 | 560 - 896 | g | Male | Adult | southern portion of state | 87 | Exposure Factor Datasets | |
| Body Weight - Mean | 860 | 562 - 956 | g | Female | Adult | southern portion of state | 40 | Exposure Factor Datasets | |
| Time of Mating/ Laying | Jan. - Aug. | time of breeding | Both Male and Female | Adult | southern portion of state | Not Reported | Exposure Factor Datasets | ||
| Clutch or Litter Size | 2.9 | estimated by embryo counts | 2 - 4 | young/litter | Female | Adult | southern portion of state | 56 | Exposure Factor Datasets |
| Age at Sexual Maturity | < 9 | earliest age when pregnancy noted | mo | Female | Adult | southern portion of state | Not Reported | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 2.7 | estimated by uterine scar counts | 2 - 6 | young/litter | Female | Adult | Phoenix | Not Reported | Exposure Factor Datasets |
| Time of Mating/ Laying | Jan. - Aug. | time of breeding | Both Male and Female | Adult | Phoenix | 101 | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|
| Dietary Composition | crayfish (94.67%), ground beetle (0.11%), unident. beetle (0.56%), weevils (2.78%), damselfly nymphs (0.11%), grasshoppers (0.11%), insect eggs (.11%), unident. parts (0.78%), spider (0.56%), seeds (0.11%), corbicula (0.06%), unident. mammal bone (0.06%) | dietary item occurence by volume in stomach contents | Not Reported | Adult | Topock Marsh to Imperial Lake | 9 stomachs | Exposure Factor Datasets |
| Dietary Composition | isopoda (48.5%), unident. parts (1.50%), corbicula (50.00%) | dietary item occurence by volume in stomach contents | Not Reported | Adult | Gila/Colorado River confluence | 2 stomachs | Exposure Factor Datasets |
| Dietary Composition | shrimp (0.25%), water beetle (56.50%), dragonfly nymphs (0.50%), damselfly nymphs (2.00%), leech (3.75%), unident. fish (31.75%) | dietary item occurence by volume in stomach contents | Not Reported | Adult | Colorado Delta | 4 stomachs | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Population Density | range of mean population densities | 0.98-1.21 | birds/acre | Not Reported | Not Reported | Dumbarton Bridge Marsh | 1 marsh | Exposure Factor Datasets | |
| Time of Nesting | April | beginning of nesting | Not Reported | Not Reported | Dumbarton Bridge Marsh | 1 marsh | Exposure Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Range | Units | Sex | Life Cycle Stage | Location | Sample Size | Type |
|---|---|---|---|---|---|---|---|---|---|
| Time of Torpor or Hibernation | Sept. - Mar. | Not Reported | Adult | Phoenix South Mountain, Maricopa County | Not Reported | Exposure Factor Datasets | |||
| Growth Rate | 2.7 | growth rate based on changes in snout-vent length (48-73 mm) | 0.0 - 5.1 | mm/mo | Not Reported | Juvenile | Phoenix South Mountain, Maricopa County | 22 | Exposure Factor Datasets |
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