Mitochondrial DNA Analysis of Pacific Northwest Populations of<i>Oncorhynchus tshawytscha</i>

Wilson, Gary; Thomas, William K.; Beckenbach, Andrew T.

doi:10.1139/f87-153

Cited by 35 publications

(17 citation statements)

References 6 publications

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“…Pacific salmon exhibit some of the lowest mtDNA nucleotide diversities among fish species (Billington & Hebert 1991; Bernatchez & Wilson 1998). Several mtDNA‐based studies of Oncorhynchus species (Wilson et al . 1987; Cronin et al .…”

Section: Introductionmentioning

confidence: 99%

Assessment of concordance among genealogical reconstructions from various mtDNA segments in three species of Pacific salmon (genus Oncorhynchus)

et al. 2001

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Seven segments of mitochondrial DNA (mtDNA), comprising 97% of the mitochondrial genome, were amplified by polymerase chain reaction (PCR) and examined for restriction site variation using 13 restriction endonucleases in three species of Pacific salmon: pink (Oncorhynchus gorbuscha), chum (O. keta) and sockeye (O. nerka) salmon. The distribution of variability across the seven mtDNA segments differed substantially among species. Little similarity in the distribution of variable restriction sites was found even between the mitochondrial genomes of the even- and odd-year broodlines of pink salmon. Significantly different levels of nucleotide diversity were detected among three groups of genes: six NADH-dehydrogenase genes had the highest; two rRNA genes had the lowest; and a group that included genes for ATPase and cytochrome oxidase subunits, the cytochrome b gene, and the control region had intermediate levels of nucleotide diversity. Genealogies of mtDNA haplotypes were reconstructed for each species, based on the variation in all mtDNA segments. The contributions of variation within different segments to resolution of the genealogical trees were compared within each species. With the exception of sockeye salmon, restriction site data from different genome segments tended to produce rather different trees (and hence rather different genealogies). In the majority of cases, genealogical information in different segments of mitochondrial genome was additive rather than congruent. This finding has a relevance to phylogeographic studies of other organisms and emphasizes the importance of not relying on a limited segment of the mtDNA genome to derive a phylogeographic structure.

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Section: Introductionmentioning

confidence: 99%

Assessment of concordance among genealogical reconstructions from various mtDNA segments in three species of Pacific salmon (genus Oncorhynchus)

et al. 2001

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“…Mitochondria1 DNA (mtDNA) has for some years showed promising results in population genetic studies of mammals (mouse, Ferris et al, 1983;rat, Brown & Simpson, 1981;pocket gopher, Avise et al, 1979). More recent studies have been conducted on salmonids (Wilson et al, 1987;Berg & Ferris, 1984) and herring (Kornfield & Bogdanowicz, 1987).…”

Section: Introductionmentioning

confidence: 99%

Cod, Gadus morhua L., populations identified by mitochondrial DNA

Dahle

1991

Journal of Fish Biology

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Isozyme and haemoglobin analysis has shown that the cod, Gadus morhua L., in the NE Atlantic can be regarded as two populations: Arctic and coastal cod. One hundred and one individual cod from nine different locations were sampled and restriction fragment analysis uncovered 14 different mtDNA clones. Calculation of sequence divergence between localities displayed large divergence between samples from coastal and Arctic areas (1.77-5.62%), as opposed to the low intrapopulation divergence (z 0.10%) and the divergence between localities along the coast (=0,17%)andin the BarentsSea(z 1.00Y0).

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“…Intraspecific variation tests with other teleosts did not show significant differences in the intraspecific variation values of cytochrome b (Carr & Marshall, 1991;Patarnello et al, 1993;Magoulas et al, 1995). The actual sequence divergence observable between random individuals within a single population, based on either restriction fragment analysis or sequence information, is generally <0·5% (Wilson, 1987;Beckenbach, 1991 al., 1995). Third, the interspecific divergence is an order of magnitude greater than the intraspecific variation.…”

Section: Discussionmentioning

confidence: 99%

Mitochondrial cytochrome b sequence variation in Korean salmonids

Park

Lee

Kim

et al. 2000

Journal of Fish Biology

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The complete 1141 bp mitochondrial cytochrome b sequences were determined for lenok Brachymystax lenok, cherry salmon Oncorhynchus masou masou, Ishikawa's cherry salmon O. m. ishikawai, chum salmon O. keta, rainbow trout O. mykiss, and an albino mutant of rainbow trout. Common substitutions detected in these species were transitional mutations. There were no significant differences in the intraspecific variation of the cytochrome b genes. Interspecific divergences were greater than intraspecific variation. The level of variation ranged from 8·026-15·686%. The cherry salmon was closer to chum salmon than to rainbow trout, and the lenok was the most distantly related species. 2000 The Fisheries Society of the British Isles

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Mitochondrial DNA Analysis of Pacific Northwest Populations ofOncorhynchus tshawytscha

Cited by 35 publications

References 6 publications

Assessment of concordance among genealogical reconstructions from various mtDNA segments in three species of Pacific salmon (genus Oncorhynchus)

Assessment of concordance among genealogical reconstructions from various mtDNA segments in three species of Pacific salmon (genus Oncorhynchus)

Cod, Gadus morhua L., populations identified by mitochondrial DNA

Mitochondrial cytochrome b sequence variation in Korean salmonids

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