The sea otter in the eastern Pacific Ocean

Author(s)
Kenyon, Karl W.
Year
Article Title
The sea otter in the eastern Pacific Ocean
Issue
68
Pages
1-352
Start Page Number
1
Final Page
352
Review

Datapoints

Displaying 1 - 11 of 11 datapoints.
Species: Sea Otter (Enhydra lutris)
Exposure Endpoint Type Endpoint Description Endpoint Value Sample Size Units Life Cycle Stage Specific Location Range Type
Survival/ Mortality annual mortality over two years estimated from carcass searches on beaches 1 population (1076 otters) % Both Adults and Juveniles Amchitka Island 8-11 Exposure Factor Datasets
Body Weight - Mean 1.75 4 kg Juvenile Amchitka Island 1.2-2.5 Exposure Factor Datasets
Body Weight - Mean 1.96 6 kg Juvenile Amchitka Island 1.02-2.83 Exposure Factor Datasets
Body Weight - Mean 28.3 79 kg Adult Amchitka Island 21.8-38.6 Exposure Factor Datasets
Body Weight - Mean 21.1 254 kg Adult Amchitka Island 14.5-31.7 Exposure Factor Datasets
Food Ingestion Rate 4.04 1 kg/d Adult 0.9-7.2 Exposure Factor Datasets
Dietary Composition mean percent of total stomach content volume contributed by dietary items vertebrates (fish; 50%), mollusks (37%), echinoderms (11%), annelid worms (1%), tunicates (<1%), crabs/shrimp (<1%) 309 stomachs Not Reported Amchitka Island Exposure Factor Datasets
Age at Sexual Maturity 4 Not Reported yr Juvenile Amchitka Island Exposure Factor Datasets
Duration of Incubation or Gestation estimated gestation including delayed implantation period 275 reproductive tracts mo Adult Amchitka Island 12-13 Exposure Factor Datasets
Clutches or Litters per year annual reproductive rate, based on field count, sex ratio, reproductive tract data Not Reported % Adult Amchitka Island 14-15 Exposure Factor Datasets
Clutch or Litter Size litter size as indicated by reproductive tract examination 1 278 reproductive tracts pup Adult Amchitka Island Exposure Factor Datasets

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