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Senanan, W. and A. R. Kapuscinski (2000). Genetic relationships among populations of northern pike Esox lucius. Canadian Journal of Fisheries and Aquatic Sciences. 57:391-404.
Genetic variation was assessed, using microsatellite markers, in 14 populations of northern pike Esox lucius in the North Central United States and in six populations from Quebec, Alaska, Siberia, and Finland. Eight of 13 loci examined were polymorphic in at least one population with an average heterozygosity at all loci and across all populations of 0.14. The R sub(st) and F sub(st) values indicated differentiation among populations (R sub(st) = 0.61, F sub(st)). Although microsatellite variation found in northern pike was much lower than that found in sympatric and other fish species, the allozymes and mitochondrial DNA. UPGMA-clustering phenograms were generated based on five genetic distance measures with 2000 bootstrap replicates per measure. All measures yielded highly repeatable population structure between continents (supporting values = 92.4- 100%) and within Finland (42.3-98%). Four measures differentiated the Alaskan population and Young Lake (Great Lakes drainage) from other North American populations (56.6-87.7%). Relationships among other North Central United States populations were unclear, as indicated by low supporting values. Results support the hypotheses of one refugium in the North Central United States and more than one refugium in Europe during the last glaciation.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/URL: http://www.umesc.usgs.gov/data_library/fisheries/fish_passage/senanan.html
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