Snake River Sockeye Salmon Survival and Maturity Rates by Brood Year

A captive broodstock program for the endangered Snake River sockeye salmon from Redfish Lake, Idaho. Data is collected by brood year on survival percentages to key life stages and age of maturity by sex. The dataset is provided by the National Oceanic and Atmospheric Administration, Department of Commerce.

Use Cases

• Model population survival rates based on percentages for eye, spawning, smolt, and adult stages.
• Analyze age of maturity patterns based on data for two, three, and four-year-old fish.
• Evaluate the effectiveness of a gene rescue captive broodstock program based on recovery effort data.
• Study sex-specific maturity trends based on age of maturity data available by sex.

Strengths

• Focuses on a specific, ESA-listed endangered species from a defined location (Snake River sockeye salmon from Redfish Lake, Idaho).
• Tracks multiple critical life stage metrics (survival to eye, spawning, smolt, adult) and maturity by age.
• Data is collected by brood year, providing a longitudinal structure for analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is provided in PDF format, which may complicate direct analysis.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Data collected from a captive culture program at specialized conservation hatcheries.

Time Range

null

Freshness

Last updated 2026-03-14 22:55:04.615090; freshness should be verified.

Geography

Snake River, Redfish Lake, Idaho; Manchester Research Station and Idaho Department of Fish and Game Eagle Hatchery.