Rallus longirostris ssp. obsoletus
California Clapper Rail (Rallus longirostris ssp. obsoletus)
| Chemical | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type |
|---|---|---|---|---|---|---|---|
| CHLORDANE, DDD (4,4'-), DDE (4,4'-), DDT (4,4'-), DIELDRIN, HEPTACHLOR, MERCURY (elemental), POLYCHLORINATED BIPHENYLS, SELENIUM (elemental) | no effect | eggshell thickness compared to those of museum eggs from 1907 and 1936 | Female | Adult | 29 eggs | North and South San Francisco Bay | Toxicity Factor Datasets |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Clutch or Litter Size | 7.27 | mean clutch size | Female | Adult | 26 nests | south San Francisco Bay | Exposure Factor Datasets | Alameda | 0.96 SD | |
| Duration of Incubation or Gestation | 24.2 | mean incubation period | d | Both Male and Female | Embryo | 5 nests | south San Francisco Bay | Exposure Factor Datasets | Alameda | |
| Hatching Success | 56% | proportion of nests in which at least one egg hatched | Both Male and Female | Hatchling | 50 nests | south San Francisco Bay | Exposure Factor Datasets | Alameda | ||
| Time of Mating/ Laying | late March | beginning of lay | Both Male and Female | Hatchling | Not Reported | south San Francisco Bay | Exposure Factor Datasets | Alameda | ||
| Population Density | 1.47 | mean breeding density based on rope drag and call count data | birds/ha | Both Male and Female | Adult | 68 ha | south San Francisco Bay-Dumbarton Point | Exposure Factor Datasets | Alameda | |
| Population Density | 0.89 | mean breeding density based on rope drag and call count data | birds/ha | Both Male and Female | Adult | 117 ha | south San Francisco Bay - Mowry Slough | Exposure Factor Datasets | Alameda | |
| Population Density | 0.69 | mean breeding density based on rope drag and call count data | birds/ha | Both Male and Female | Adult | 55 ha | south San Francisco Bay - Ideal Marsh | Exposure Factor Datasets | Alameda |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Population Density | range of mean population densities | birds/acre | Not Reported | Not Reported | 1 marsh | Dumbarton Bridge Marsh | Exposure Factor Datasets | San Francisco | |
| Time of Nesting | April | beginning of nesting | Not Reported | Not Reported | 1 marsh | Dumbarton Bridge Marsh | Exposure Factor Datasets | San Francisco | |
| Clutch or Litter Size | 7.22 | mean clutch size | Not Reported | Not Reported | 27 nests | Dumbarton Bridge Marsh | Exposure Factor Datasets | San Francisco | |
| Duration of Incubation or Gestation | estimated incubation period in field | d | Not Reported | Not Reported | 3 nests | Dumbarton Bridge Marsh | Exposure Factor Datasets | San Francisco |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Population Density | range of mean densities | birds/ha | Both Male and Female | Adult | 5 sites | San Francisco Bay | Exposure Factor Datasets | Alameda, Marin, San Mateo, Santa Clara, Sonoma |
| Population Density | range of mean densities | birds/ha | Both Male and Female | Adult | 5 sites | San Francisco Bay | Exposure Factor Datasets | Alameda, Marin, San Mateo, Santa Clara, Sonoma |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Dietary Composition | Modiolus demissus (56.5%), Lycosidae (15%), Macoma balthica (7.6%), Hemigrapsis oregonensis (3.2%), Hyanassa obsoleta (2%), Spartina leiantha (14.55%) | Volumetric percentage of food items in stomach contents | Not Reported | Not Reported | 18 stomachs | San Francisco Bay | Exposure Factor Datasets | Santa Clara |
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 | |
| Survival/ Mortality | review | Exposure Factor Datasets | USA | |
| Dietary Composition | review | Exposure Factor Datasets | USA | |
| Territory Size | review | Exposure Factor Datasets | USA |
