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Assessment of concordance among genealogical reconstructions from various mtDNA segments in three species of Pacific salmon (genus Oncorhynchus ) by D. Churikov; M. Matsuoka; X. Luan; A. K. Gray; VL. A. Brykov; A. J. Gharrett is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract 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 compar

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Author

D. Churikov; M. Matsuoka; X. Luan; A. K. Gray; VL. A. Brykov; A. J. Gharrett

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley; Research Square (ISSN 0962-1083)

Published

2001

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)