Phylogenetics of Scaphirhynchus based on mitochondrial DNA sequences
Identifieur interne : 001563 ( Main/Merge ); précédent : 001562; suivant : 001564Phylogenetics of Scaphirhynchus based on mitochondrial DNA sequences
Auteurs : Andrew M. Simons [États-Unis] ; Robert M. Wood [États-Unis] ; Lucie S. Heath [États-Unis] ; Bernard R. Kuhajda [États-Unis] ; Richard L. Mayden [États-Unis]Source :
- Transactions of the American Fisheries Society : (1900) [ 0002-8487 ] ; 2001.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Species delineation and taxonomy within the sturgeon genus Scaphirhynchus is controversial. This issue is made more complex by political issues regarding the Alabama sturgeon S. suttkusi and potential hybridization between sympatric shovelnose sturgeon S. platorynchus and pallid sturgeon S. albus. We investigated phylogenetic relationships among species of Scaphirhynchus based on nucleotide sequences for two mitochondrial loci, cytochrome b and the control region (D-loop). White sturgeon Acipenser transmontanus and green sturgeon A. medirostris were used as outgroups. Phylogenetic analyses did not recover monophyletic shovelnose or pallid sturgeon; however, some populations of pallid sturgeon were resolved as sister to the Alabama sturgeon, and one specimen of shovelnose sturgeon was consistently resolved as the sister to all other ingroup taxa. The hierarchical pattern of relationships produced by analysis of mitochondrial DNA is not consistent with that produced by morphological data. It is consistent with the hypothesis of a low rate of evolution of these genes in Scaphirhynchus and reflects recent hybridization between shovelnose and pallid sturgeon, probably due to habitat degradation.
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Simons</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Fisheries and Wildlife and James Ford Bell Museum of Natural History, University of Minnesota, 1980 Folwell Avenue</s1><s2>St. Paul, Minnesota 55108</s2><s3>USA</s3><sZ>1 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>St. Paul, Minnesota 55108</wicri:noRegion></affiliation></author><author><name sortKey="Wood, Robert M" sort="Wood, Robert M" uniqKey="Wood R" first="Robert M." last="Wood">Robert M. Wood</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Biology, Saint Louis University, 3507 Laclede</s1><s2>St. Louis, Missouri 63103</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>St. Louis, Missouri 63103</wicri:noRegion></affiliation></author><author><name sortKey="Heath, Lucie S" sort="Heath, Lucie S" uniqKey="Heath L" first="Lucie S." last="Heath">Lucie S. Heath</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Biological Sciences, University of Alabama, Box 870345</s1><s2>Tuscaloosa, Alabama 34587</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Tuscaloosa, Alabama 34587</wicri:noRegion></affiliation></author><author><name sortKey="Kuhajda, Bernard R" sort="Kuhajda, Bernard R" uniqKey="Kuhajda B" first="Bernard R." last="Kuhajda">Bernard R. Kuhajda</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Biological Sciences, University of Alabama, Box 870345</s1><s2>Tuscaloosa, Alabama 34587</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Tuscaloosa, Alabama 34587</wicri:noRegion></affiliation></author><author><name sortKey="Mayden, Richard L" sort="Mayden, Richard L" uniqKey="Mayden R" first="Richard L." last="Mayden">Richard L. Mayden</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Biological Sciences, University of Alabama, Box 870345</s1><s2>Tuscaloosa, Alabama 34587</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Tuscaloosa, Alabama 34587</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Transactions of the American Fisheries Society : (1900)</title><title level="j" type="abbreviated">Trans. Am. Fish. Soc. : (1900)</title><idno type="ISSN">0002-8487</idno><imprint><date when="2001">2001</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Transactions of the American Fisheries Society : (1900)</title><title level="j" type="abbreviated">Trans. Am. Fish. Soc. : (1900)</title><idno type="ISSN">0002-8487</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Genetic diversity</term><term>Hybridization</term><term>Interspecific comparison</term><term>Intraspecific comparison</term><term>Mitochondrial DNA</term><term>Nucleotide sequence</term><term>Phylogenetic tree</term><term>Stream</term><term>United States</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>DNA mitochondrial</term><term>Séquence nucléotide</term><term>Comparaison intraspécifique</term><term>Comparaison interspécifique</term><term>Arbre phylogénétique</term><term>Diversité génétique</term><term>Hybridation</term><term>Cours eau</term><term>Etats Unis</term><term>Scaphirhynchus suttkusi</term><term>Acipenseridae</term><term>Scaphirhynchus platorynchus</term><term>Scaphirhynchus albus</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Species delineation and taxonomy within the sturgeon genus Scaphirhynchus is controversial. This issue is made more complex by political issues regarding the Alabama sturgeon S. suttkusi and potential hybridization between sympatric shovelnose sturgeon S. platorynchus and pallid sturgeon S. albus. We investigated phylogenetic relationships among species of Scaphirhynchus based on nucleotide sequences for two mitochondrial loci, cytochrome b and the control region (D-loop). White sturgeon Acipenser transmontanus and green sturgeon A. medirostris were used as outgroups. Phylogenetic analyses did not recover monophyletic shovelnose or pallid sturgeon; however, some populations of pallid sturgeon were resolved as sister to the Alabama sturgeon, and one specimen of shovelnose sturgeon was consistently resolved as the sister to all other ingroup taxa. The hierarchical pattern of relationships produced by analysis of mitochondrial DNA is not consistent with that produced by morphological data. It is consistent with the hypothesis of a low rate of evolution of these genes in Scaphirhynchus and reflects recent hybridization between shovelnose and pallid sturgeon, probably due to habitat degradation.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country></list><tree><country name="États-Unis"><noRegion><name sortKey="Simons, Andrew M" sort="Simons, Andrew M" uniqKey="Simons A" first="Andrew M." last="Simons">Andrew M. Simons</name></noRegion><name sortKey="Heath, Lucie S" sort="Heath, Lucie S" uniqKey="Heath L" first="Lucie S." last="Heath">Lucie S. Heath</name><name sortKey="Kuhajda, Bernard R" sort="Kuhajda, Bernard R" uniqKey="Kuhajda B" first="Bernard R." last="Kuhajda">Bernard R. Kuhajda</name><name sortKey="Mayden, Richard L" sort="Mayden, Richard L" uniqKey="Mayden R" first="Richard L." last="Mayden">Richard L. Mayden</name><name sortKey="Wood, Robert M" sort="Wood, Robert M" uniqKey="Wood R" first="Robert M." last="Wood">Robert M. 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