Inferring precocial Chinook Salmon production through single‐parentage assignments
- Pacific States Marine Fisheries Commission, Eagle Fish Genetics Lab Eagle Idaho USA
- Idaho Department of Fish and Game Eagle Idaho USA
Abstract Objective Parentage analysis is a routine methodology in fisheries research, but study systems exist where it is impractical to sample both parents. The ability to reliably assign offspring to a single parent is beneficial in these situations. We applied single‐parentage assignments to a naturally spawning population of Chinook Salmon Oncorhynchus tshawytscha to quantify production of anadromous returns by unsampled precocial males. Methods We used an approach that focused on two important aspects of parentage analyses: (1) addressing the presence of family structure within the set of sampled parents and (2) controlling for false‐positive and false‐negative assignments. Result Results indicated that 30% of reproductively successful males were precocial males, which produced 20% of the returning anadromous offspring. Conclusion This study provides a framework for applying single‐parent assignments in a salmonid study system while explicitly addressing sources of assignment errors.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 2407173
- Journal Information:
- Transactions of the American Fisheries Society, Journal Name: Transactions of the American Fisheries Society Journal Issue: 4 Vol. 153; ISSN 0002-8487
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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