Comparative phylogeography of the two pink salmon broodlines: an analysis based on a mitochondrial DNA genealogy

Abstract Over most of their natural northern Pacific Ocean range, pink salmon ( Oncorhynchus gorbuscha ) spawn in a habitat that was repeatedly and profoundly affected by Pleistocene glacial advances. A strictly two‐year life cycle of pink salmon has resulted in two reproductively isolated broodline...

Full description

Bibliographic Details
Published in:Molecular Ecology
Main Authors: Churikov, D., Gharrett, A. J.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2002
Subjects:
Online Access:http://dx.doi.org/10.1046/j.1365-294x.2002.01506.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-294X.2002.01506.x
https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-294X.2002.01506.x
id crwiley:10.1046/j.1365-294x.2002.01506.x
record_format openpolar
spelling crwiley:10.1046/j.1365-294x.2002.01506.x 2024-09-15T18:28:41+00:00 Comparative phylogeography of the two pink salmon broodlines: an analysis based on a mitochondrial DNA genealogy Churikov, D. Gharrett, A. J. 2002 http://dx.doi.org/10.1046/j.1365-294x.2002.01506.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-294X.2002.01506.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-294X.2002.01506.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 http://onlinelibrary.wiley.com/termsAndConditions#vor Molecular Ecology volume 11, issue 6, page 1077-1101 ISSN 0962-1083 1365-294X journal-article 2002 crwiley https://doi.org/10.1046/j.1365-294x.2002.01506.x 2024-07-18T04:24:52Z Abstract Over most of their natural northern Pacific Ocean range, pink salmon ( Oncorhynchus gorbuscha ) spawn in a habitat that was repeatedly and profoundly affected by Pleistocene glacial advances. A strictly two‐year life cycle of pink salmon has resulted in two reproductively isolated broodlines, which spawn in alternating years and evolved as temporal replicates of the same species. To study the influence of historical events on phylogeographical and population genetic structure of the two broodlines, we first reconstructed a fine‐scale mtDNA haplotype genealogy from a sample of 80 individuals and then determined the geographical distribution of the major genealogical assemblages for 718 individuals sampled from nine Alaskan and eastern Asian even‐ and nine odd‐year pink salmon populations. Analysis of restriction site states in seven polymerase chain reaction (PCR)‐amplified mtDNA regions (comprising 97% of the mitochondrial genome) using 13 endonucleases resolved 38 haplotypes, which clustered into five genealogical lineages that differed from 0.065 to 0.225% in net sequence divergence. The lineage sorting between broodlines was incomplete, which suggests a recent common ancestry. Within each lineage, haplotypes exhibited star‐like genealogies indicating recent population growth. The depth of the haplotype genealogy is shallow (∼0.5% of nucleotide sequence divergence) and probably reflects repeated decreases in population size due to Pleistocene glacial advances. Nested clade analysis (NCA) of geographical distances showed that the geographical distribution observed for mitochondrial DNA (mtDNA) haplotypes resulted from alternating influences of historical range expansions and episodes of restricted dispersal. Analyses of molecular variance showed weak geographical structuring of mtDNA variation, except for the strong subdivision between Asian and Alaskan populations within the even‐year broodline. The genetic similarities observed among and within geographical regions probably originated from ... Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Wiley Online Library Molecular Ecology 11 6 1077 1101
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description Abstract Over most of their natural northern Pacific Ocean range, pink salmon ( Oncorhynchus gorbuscha ) spawn in a habitat that was repeatedly and profoundly affected by Pleistocene glacial advances. A strictly two‐year life cycle of pink salmon has resulted in two reproductively isolated broodlines, which spawn in alternating years and evolved as temporal replicates of the same species. To study the influence of historical events on phylogeographical and population genetic structure of the two broodlines, we first reconstructed a fine‐scale mtDNA haplotype genealogy from a sample of 80 individuals and then determined the geographical distribution of the major genealogical assemblages for 718 individuals sampled from nine Alaskan and eastern Asian even‐ and nine odd‐year pink salmon populations. Analysis of restriction site states in seven polymerase chain reaction (PCR)‐amplified mtDNA regions (comprising 97% of the mitochondrial genome) using 13 endonucleases resolved 38 haplotypes, which clustered into five genealogical lineages that differed from 0.065 to 0.225% in net sequence divergence. The lineage sorting between broodlines was incomplete, which suggests a recent common ancestry. Within each lineage, haplotypes exhibited star‐like genealogies indicating recent population growth. The depth of the haplotype genealogy is shallow (∼0.5% of nucleotide sequence divergence) and probably reflects repeated decreases in population size due to Pleistocene glacial advances. Nested clade analysis (NCA) of geographical distances showed that the geographical distribution observed for mitochondrial DNA (mtDNA) haplotypes resulted from alternating influences of historical range expansions and episodes of restricted dispersal. Analyses of molecular variance showed weak geographical structuring of mtDNA variation, except for the strong subdivision between Asian and Alaskan populations within the even‐year broodline. The genetic similarities observed among and within geographical regions probably originated from ...
format Article in Journal/Newspaper
author Churikov, D.
Gharrett, A. J.
spellingShingle Churikov, D.
Gharrett, A. J.
Comparative phylogeography of the two pink salmon broodlines: an analysis based on a mitochondrial DNA genealogy
author_facet Churikov, D.
Gharrett, A. J.
author_sort Churikov, D.
title Comparative phylogeography of the two pink salmon broodlines: an analysis based on a mitochondrial DNA genealogy
title_short Comparative phylogeography of the two pink salmon broodlines: an analysis based on a mitochondrial DNA genealogy
title_full Comparative phylogeography of the two pink salmon broodlines: an analysis based on a mitochondrial DNA genealogy
title_fullStr Comparative phylogeography of the two pink salmon broodlines: an analysis based on a mitochondrial DNA genealogy
title_full_unstemmed Comparative phylogeography of the two pink salmon broodlines: an analysis based on a mitochondrial DNA genealogy
title_sort comparative phylogeography of the two pink salmon broodlines: an analysis based on a mitochondrial dna genealogy
publisher Wiley
publishDate 2002
url http://dx.doi.org/10.1046/j.1365-294x.2002.01506.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-294X.2002.01506.x
https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-294X.2002.01506.x
genre Oncorhynchus gorbuscha
Pink salmon
genre_facet Oncorhynchus gorbuscha
Pink salmon
op_source Molecular Ecology
volume 11, issue 6, page 1077-1101
ISSN 0962-1083 1365-294X
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
http://doi.wiley.com/10.1002/tdm_license_1.1
http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1046/j.1365-294x.2002.01506.x
container_title Molecular Ecology
container_volume 11
container_issue 6
container_start_page 1077
op_container_end_page 1101
_version_ 1810470149570953216