Influences of Hatchery Supplementation, Spawner Distribution, and Habitat on Genetic Structure of Chinook Salmon in the South Fork Salmon River, Idaho

Autor:	Andrew P. Matala, Jason L. Vogel, Shawn R. Narum, William C. Young
Rok vydání:	2012
Předmět:	Chinook wind education.field_of_study Ecology biology Population Introgression Management Monitoring Policy and Law Aquatic Science biology.organism_classification Hatchery Fishery Genetic distance Genetic structure Fish hatchery Oncorhynchus education Ecology Evolution Behavior and Systematics
Zdroj:	North American Journal of Fisheries Management. 32:346-359
ISSN:	1548-8675 0275-5947
DOI:	10.1080/02755947.2012.678961
Popis:	We evaluated the genetic influence of hatchery supplementation on distinct naturally spawning populations of Chinook salmon Oncorhynchus tshawytscha in the South Fork Salmon River (SFSR), Idaho. Genetic tissue samples were collected from unmarked natural-origin and McCall Fish Hatchery (MFH)-reared Chinook salmon carcasses, and fish were identified by an adipose fin clip at five main-stem sites located both upstream and downstream of a seasonal exclusionary weir in the upper SFSR. We evaluated allele frequency data across 95 single-nucleotide polymorphism loci to determine the extent of genetic differentiation among collections. Genetic distance analyses and homogeneity tests indicated little subpopulation distinction in the upper SFSR. The weak overall genetic structure (global F ST = 0.010) is likely reflective of a population diversity similar to the historical structure with introgression by MFH stock in the naturally spawning population of the upper SFSR. Further analyses were conducted to e...
Databáze:	OpenAIRE
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