Major Lineages and Metapopulations in Columbia RiverOncorhynchus mykissAre Structured by Dynamic Landscape Features and Environments

Autor: Jon E. Hess, Maureen A. Hess, Melanie M. Paquin, Paul Moran, Shawn R. Narum, Kenneth I. Warheit, Todd W. Kassler, Scott M. Blankenship, Maureen P. Small, Andrew P. Matala, Christine C. Kozfkay, Jeff J. Stephenson, Matt R. Campbell
Rok vydání: 2011
Předmět:
Zdroj: Transactions of the American Fisheries Society. 140:665-684
ISSN: 1548-8659
0002-8487
DOI: 10.1080/00028487.2011.584487
Popis: It is widely recognized that genetic diversity within species is shaped by dynamic habitats. The quantitative and molecular genetic patterns observed are the result of demographics, mutation, migration, and adaptation. The populations of rainbow trout Oncorhynchus mykiss in the Columbia River basin (including both resident and anadromous forms and various subspecies) present a special challenge to understanding the relative roles of those factors. Standardized microsatellite data were compiled for 226 collections (15,658 individuals) from throughout the Columbia and Snake River basins to evaluate the genetic patterns of structure and adaptation. The data were primarily from fish of the anadromous life history form, and we used a population grouping procedure based on principal components and hierarchical k-means clustering to cluster populations into eight aggregates or groups with similar allele frequencies. These aggregates approximated geographic regions, and the two largest principal componen...
Databáze: OpenAIRE
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