Molecular evidence for the subspecific differentiation of blue sheep (Pseudois nayaur) and polyphyletic origin of dwarf blue sheep (Pseudois schaeferi)
Blue sheep (Pseudois nayaur), a Central Asian ungulate with restricted geographic distribution, exhibits unclear variation in morphology and phylogeographic structure. The composition of species and subspecies in the genus Pseudois is controversial, particularly with respect to the taxonomic designa...
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| Veröffentlicht in: | Genetica 2012-06, Vol.140 (4-6), p.159-167 |
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| creator | Tan, Shuai Zou, Dandan Tang, Lei Wang, Gaochao Peng, Quekun Zeng, Bo Zhang, Chen Zou, Fangdong |
| description | Blue sheep (Pseudois nayaur), a Central Asian ungulate with restricted geographic distribution, exhibits unclear variation in morphology and phylogeographic structure. The composition of species and subspecies in the genus Pseudois is controversial, particularly with respect to the taxonomic designation of geographically restricted populations. Here, 26 specimens including 5 dwarf blue sheep (Pseudois schaeferi), which were collected from a broad geographic region in China, were analyzed for 2 mitochondrial DNA fragments (cytochrome b and control region sequences). In a pattern consistent with geographically defined subspecies, we found three deeply divergent mitochondrial lineages restricted to different geographic regions. The currently designated two subspecies of blue sheep, Pseudois nayaur nayaur and Pseudois nayaur szechuanensis, were recognized in the phylogenetic trees. In addition, the Helan Mountain population showed distinct genetic characteristics from other geographic populations, and thus should be classified as a new subspecies. In contrast, dwarf blue sheep clustered closely with some blue sheep from Sichuan Province in the phylogenetic trees. Therefore, dwarf blue sheep appear to be a subset of Pseudois nayaur szechuanensis. After considering both population genetic information and molecular clock analysis, we obtained some relevant molecular phylogeographic information concerning the historical biogeography of blue sheep. These results also indicate that western Sichuan was a potential refugium for blue sheep during the Quaternary period. |
| doi_str_mv | 10.1007/s10709-012-9667-4 |
| format | Article |
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The composition of species and subspecies in the genus Pseudois is controversial, particularly with respect to the taxonomic designation of geographically restricted populations. Here, 26 specimens including 5 dwarf blue sheep (Pseudois schaeferi), which were collected from a broad geographic region in China, were analyzed for 2 mitochondrial DNA fragments (cytochrome b and control region sequences). In a pattern consistent with geographically defined subspecies, we found three deeply divergent mitochondrial lineages restricted to different geographic regions. The currently designated two subspecies of blue sheep, Pseudois nayaur nayaur and Pseudois nayaur szechuanensis, were recognized in the phylogenetic trees. In addition, the Helan Mountain population showed distinct genetic characteristics from other geographic populations, and thus should be classified as a new subspecies. In contrast, dwarf blue sheep clustered closely with some blue sheep from Sichuan Province in the phylogenetic trees. Therefore, dwarf blue sheep appear to be a subset of Pseudois nayaur szechuanensis. After considering both population genetic information and molecular clock analysis, we obtained some relevant molecular phylogeographic information concerning the historical biogeography of blue sheep. These results also indicate that western Sichuan was a potential refugium for blue sheep during the Quaternary period.</description><identifier>ISSN: 0016-6707</identifier><identifier>EISSN: 1573-6857</identifier><identifier>DOI: 10.1007/s10709-012-9667-4</identifier><identifier>PMID: 22821360</identifier><language>eng</language><publisher>Dordrecht: Springer-Verlag</publisher><subject>Animal Genetics and Genomics ; Animals ; Biogeography ; Biomedical and Life Sciences ; China ; Cytochrome b ; Differentiation ; DNA, Mitochondrial - genetics ; Evolution, Molecular ; Evolutionary Biology ; Genetics, Population ; Geographical distribution ; Geography ; Human Genetics ; Life Sciences ; Microbial Genetics and Genomics ; Mitochondria ; Mitochondrial DNA ; Mountains ; Mutation ; Mutation Rate ; New subspecies ; Phylogeny ; Plant Genetics and Genomics ; Population genetics ; Pseudois schaeferi ; Quaternary ; Sheep ; Sheep - classification ; Sheep - genetics ; species diversity ; Ungulates</subject><ispartof>Genetica, 2012-06, Vol.140 (4-6), p.159-167</ispartof><rights>Springer Science+Business Media B.V. 2012</rights><rights>Springer Science+Business Media Dordrecht 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c429t-f4e4cc2e809e7216c91b65719222a944505f833ae5309ebc96f40b3f5c5eeecd3</citedby><cites>FETCH-LOGICAL-c429t-f4e4cc2e809e7216c91b65719222a944505f833ae5309ebc96f40b3f5c5eeecd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10709-012-9667-4$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10709-012-9667-4$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22821360$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tan, Shuai</creatorcontrib><creatorcontrib>Zou, Dandan</creatorcontrib><creatorcontrib>Tang, Lei</creatorcontrib><creatorcontrib>Wang, Gaochao</creatorcontrib><creatorcontrib>Peng, Quekun</creatorcontrib><creatorcontrib>Zeng, Bo</creatorcontrib><creatorcontrib>Zhang, Chen</creatorcontrib><creatorcontrib>Zou, Fangdong</creatorcontrib><title>Molecular evidence for the subspecific differentiation of blue sheep (Pseudois nayaur) and polyphyletic origin of dwarf blue sheep (Pseudois schaeferi)</title><title>Genetica</title><addtitle>Genetica</addtitle><addtitle>Genetica</addtitle><description>Blue sheep (Pseudois nayaur), a Central Asian ungulate with restricted geographic distribution, exhibits unclear variation in morphology and phylogeographic structure. The composition of species and subspecies in the genus Pseudois is controversial, particularly with respect to the taxonomic designation of geographically restricted populations. Here, 26 specimens including 5 dwarf blue sheep (Pseudois schaeferi), which were collected from a broad geographic region in China, were analyzed for 2 mitochondrial DNA fragments (cytochrome b and control region sequences). In a pattern consistent with geographically defined subspecies, we found three deeply divergent mitochondrial lineages restricted to different geographic regions. The currently designated two subspecies of blue sheep, Pseudois nayaur nayaur and Pseudois nayaur szechuanensis, were recognized in the phylogenetic trees. In addition, the Helan Mountain population showed distinct genetic characteristics from other geographic populations, and thus should be classified as a new subspecies. In contrast, dwarf blue sheep clustered closely with some blue sheep from Sichuan Province in the phylogenetic trees. Therefore, dwarf blue sheep appear to be a subset of Pseudois nayaur szechuanensis. After considering both population genetic information and molecular clock analysis, we obtained some relevant molecular phylogeographic information concerning the historical biogeography of blue sheep. These results also indicate that western Sichuan was a potential refugium for blue sheep during the Quaternary period.</description><subject>Animal Genetics and Genomics</subject><subject>Animals</subject><subject>Biogeography</subject><subject>Biomedical and Life Sciences</subject><subject>China</subject><subject>Cytochrome b</subject><subject>Differentiation</subject><subject>DNA, Mitochondrial - genetics</subject><subject>Evolution, Molecular</subject><subject>Evolutionary Biology</subject><subject>Genetics, Population</subject><subject>Geographical distribution</subject><subject>Geography</subject><subject>Human Genetics</subject><subject>Life Sciences</subject><subject>Microbial Genetics and Genomics</subject><subject>Mitochondria</subject><subject>Mitochondrial DNA</subject><subject>Mountains</subject><subject>Mutation</subject><subject>Mutation Rate</subject><subject>New subspecies</subject><subject>Phylogeny</subject><subject>Plant Genetics and Genomics</subject><subject>Population genetics</subject><subject>Pseudois schaeferi</subject><subject>Quaternary</subject><subject>Sheep</subject><subject>Sheep - 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Academic</collection><jtitle>Genetica</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tan, Shuai</au><au>Zou, Dandan</au><au>Tang, Lei</au><au>Wang, Gaochao</au><au>Peng, Quekun</au><au>Zeng, Bo</au><au>Zhang, Chen</au><au>Zou, Fangdong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Molecular evidence for the subspecific differentiation of blue sheep (Pseudois nayaur) and polyphyletic origin of dwarf blue sheep (Pseudois schaeferi)</atitle><jtitle>Genetica</jtitle><stitle>Genetica</stitle><addtitle>Genetica</addtitle><date>2012-06-01</date><risdate>2012</risdate><volume>140</volume><issue>4-6</issue><spage>159</spage><epage>167</epage><pages>159-167</pages><issn>0016-6707</issn><eissn>1573-6857</eissn><abstract>Blue sheep (Pseudois nayaur), a Central Asian ungulate with restricted geographic distribution, exhibits unclear variation in morphology and phylogeographic structure. The composition of species and subspecies in the genus Pseudois is controversial, particularly with respect to the taxonomic designation of geographically restricted populations. Here, 26 specimens including 5 dwarf blue sheep (Pseudois schaeferi), which were collected from a broad geographic region in China, were analyzed for 2 mitochondrial DNA fragments (cytochrome b and control region sequences). In a pattern consistent with geographically defined subspecies, we found three deeply divergent mitochondrial lineages restricted to different geographic regions. The currently designated two subspecies of blue sheep, Pseudois nayaur nayaur and Pseudois nayaur szechuanensis, were recognized in the phylogenetic trees. In addition, the Helan Mountain population showed distinct genetic characteristics from other geographic populations, and thus should be classified as a new subspecies. In contrast, dwarf blue sheep clustered closely with some blue sheep from Sichuan Province in the phylogenetic trees. Therefore, dwarf blue sheep appear to be a subset of Pseudois nayaur szechuanensis. After considering both population genetic information and molecular clock analysis, we obtained some relevant molecular phylogeographic information concerning the historical biogeography of blue sheep. These results also indicate that western Sichuan was a potential refugium for blue sheep during the Quaternary period.</abstract><cop>Dordrecht</cop><pub>Springer-Verlag</pub><pmid>22821360</pmid><doi>10.1007/s10709-012-9667-4</doi><tpages>9</tpages></addata></record> |
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| subjects | Animal Genetics and Genomics Animals Biogeography Biomedical and Life Sciences China Cytochrome b Differentiation DNA, Mitochondrial - genetics Evolution, Molecular Evolutionary Biology Genetics, Population Geographical distribution Geography Human Genetics Life Sciences Microbial Genetics and Genomics Mitochondria Mitochondrial DNA Mountains Mutation Mutation Rate New subspecies Phylogeny Plant Genetics and Genomics Population genetics Pseudois schaeferi Quaternary Sheep Sheep - classification Sheep - genetics species diversity Ungulates |
| title | Molecular evidence for the subspecific differentiation of blue sheep (Pseudois nayaur) and polyphyletic origin of dwarf blue sheep (Pseudois schaeferi) |
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