Genetic population structure of the bigeye tuna Thunnus obesus in the central Pacific Ocean based on mtDNA Cytb sequences
Bigeye tuna Thunnus obesus is considered an important fishery species around the world. There is no adequate genetic data available for the T. obesus population. Polymorphism of sequence variations in mitochondrial Cyt b genes were assessed to explore the level of genetic variability and differentia...
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| Veröffentlicht in: | Fisheries science 2014-05, Vol.80 (3), p.415-426 |
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| creator | Wu, Zhichao Xu, Qianghua Zhu, Jiangfeng Dai, Xiaojie Xu, Liuxiong |
| description | Bigeye tuna
Thunnus obesus
is considered an important fishery species around the world. There is no adequate genetic data available for the
T. obesus
population. Polymorphism of sequence variations in mitochondrial Cyt
b
genes were assessed to explore the level of genetic variability and differentiation among eight populations of
T. obesus
sampled from the central Pacific Ocean. Overall, a total of 44 mtDNA haplotypes and 26 variable sites were detected in the 686 bp segment of mtDNA Cyt
b
gene. Nucleotide diversity ranged from 0.17 to 0.27 % and the haplotype diversity ranged from 0.604 to 0.793. An analysis of molecular variance (AMOVA) test of bigeye tuna revealed that 99.38 % of the genetic variation occurred within populations. Both the maximum likelihood tree and the haplotype network indicated that two lineages of bigeye tuna coexisted in the central Pacific Ocean. Hierarchical AMOVA tests and pairwise analysis revealed no geographical isolation among haplotypes within the two lineages. High
N
m values from this investigation indicated high rates of gene flow between the two sampling regions. Furthermore, tests of neutrality and mismatch distribution suggested that
T. obesus
might have experienced a population expansion, one that possibly occurred 110,000 years ago. Our study firstly unraveled the population genetic structure of the
T. obesus
in the central Pacific Ocean, and addressed the related fishery management issues including fishery stock identification, management, and conservation. |
| doi_str_mv | 10.1007/s12562-014-0712-3 |
| format | Article |
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Thunnus obesus
is considered an important fishery species around the world. There is no adequate genetic data available for the
T. obesus
population. Polymorphism of sequence variations in mitochondrial Cyt
b
genes were assessed to explore the level of genetic variability and differentiation among eight populations of
T. obesus
sampled from the central Pacific Ocean. Overall, a total of 44 mtDNA haplotypes and 26 variable sites were detected in the 686 bp segment of mtDNA Cyt
b
gene. Nucleotide diversity ranged from 0.17 to 0.27 % and the haplotype diversity ranged from 0.604 to 0.793. An analysis of molecular variance (AMOVA) test of bigeye tuna revealed that 99.38 % of the genetic variation occurred within populations. Both the maximum likelihood tree and the haplotype network indicated that two lineages of bigeye tuna coexisted in the central Pacific Ocean. Hierarchical AMOVA tests and pairwise analysis revealed no geographical isolation among haplotypes within the two lineages. High
N
m values from this investigation indicated high rates of gene flow between the two sampling regions. Furthermore, tests of neutrality and mismatch distribution suggested that
T. obesus
might have experienced a population expansion, one that possibly occurred 110,000 years ago. Our study firstly unraveled the population genetic structure of the
T. obesus
in the central Pacific Ocean, and addressed the related fishery management issues including fishery stock identification, management, and conservation.</description><identifier>ISSN: 0919-9268</identifier><identifier>EISSN: 1444-2906</identifier><identifier>DOI: 10.1007/s12562-014-0712-3</identifier><language>eng</language><publisher>Tokyo: Springer Japan</publisher><subject>Bats ; Biomedical and Life Sciences ; Fish ; Fish & Wildlife Biology & Management ; Fisheries ; Fisheries management ; Fishery sciences ; Fishing ; Food Science ; Freshwater & Marine Ecology ; Genetic diversity ; Genetic structure ; Haplotypes ; Life Sciences ; Marine ; Mitochondrial DNA ; Original Article ; Phylogenetics ; Population ; Population genetics ; Population growth ; Population structure ; Software ; Studies ; Thunnus obesus ; Tuna</subject><ispartof>Fisheries science, 2014-05, Vol.80 (3), p.415-426</ispartof><rights>The Japanese Society of Fisheries Science 2014</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c376t-fd460447549404f93b7f27dcc71285767f17525958eb453ac3f4a3af9ba057e3</citedby><cites>FETCH-LOGICAL-c376t-fd460447549404f93b7f27dcc71285767f17525958eb453ac3f4a3af9ba057e3</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/s12562-014-0712-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12562-014-0712-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Wu, Zhichao</creatorcontrib><creatorcontrib>Xu, Qianghua</creatorcontrib><creatorcontrib>Zhu, Jiangfeng</creatorcontrib><creatorcontrib>Dai, Xiaojie</creatorcontrib><creatorcontrib>Xu, Liuxiong</creatorcontrib><title>Genetic population structure of the bigeye tuna Thunnus obesus in the central Pacific Ocean based on mtDNA Cytb sequences</title><title>Fisheries science</title><addtitle>Fish Sci</addtitle><description>Bigeye tuna
Thunnus obesus
is considered an important fishery species around the world. There is no adequate genetic data available for the
T. obesus
population. Polymorphism of sequence variations in mitochondrial Cyt
b
genes were assessed to explore the level of genetic variability and differentiation among eight populations of
T. obesus
sampled from the central Pacific Ocean. Overall, a total of 44 mtDNA haplotypes and 26 variable sites were detected in the 686 bp segment of mtDNA Cyt
b
gene. Nucleotide diversity ranged from 0.17 to 0.27 % and the haplotype diversity ranged from 0.604 to 0.793. An analysis of molecular variance (AMOVA) test of bigeye tuna revealed that 99.38 % of the genetic variation occurred within populations. Both the maximum likelihood tree and the haplotype network indicated that two lineages of bigeye tuna coexisted in the central Pacific Ocean. Hierarchical AMOVA tests and pairwise analysis revealed no geographical isolation among haplotypes within the two lineages. High
N
m values from this investigation indicated high rates of gene flow between the two sampling regions. Furthermore, tests of neutrality and mismatch distribution suggested that
T. obesus
might have experienced a population expansion, one that possibly occurred 110,000 years ago. Our study firstly unraveled the population genetic structure of the
T. obesus
in the central Pacific Ocean, and addressed the related fishery management issues including fishery stock identification, management, and conservation.</description><subject>Bats</subject><subject>Biomedical and Life Sciences</subject><subject>Fish</subject><subject>Fish & Wildlife Biology & Management</subject><subject>Fisheries</subject><subject>Fisheries management</subject><subject>Fishery sciences</subject><subject>Fishing</subject><subject>Food Science</subject><subject>Freshwater & Marine Ecology</subject><subject>Genetic diversity</subject><subject>Genetic structure</subject><subject>Haplotypes</subject><subject>Life Sciences</subject><subject>Marine</subject><subject>Mitochondrial DNA</subject><subject>Original Article</subject><subject>Phylogenetics</subject><subject>Population</subject><subject>Population genetics</subject><subject>Population growth</subject><subject>Population structure</subject><subject>Software</subject><subject>Studies</subject><subject>Thunnus 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Abstracts</collection><collection>Genetics Abstracts</collection><jtitle>Fisheries science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Zhichao</au><au>Xu, Qianghua</au><au>Zhu, Jiangfeng</au><au>Dai, Xiaojie</au><au>Xu, Liuxiong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Genetic population structure of the bigeye tuna Thunnus obesus in the central Pacific Ocean based on mtDNA Cytb sequences</atitle><jtitle>Fisheries science</jtitle><stitle>Fish Sci</stitle><date>2014-05-01</date><risdate>2014</risdate><volume>80</volume><issue>3</issue><spage>415</spage><epage>426</epage><pages>415-426</pages><issn>0919-9268</issn><eissn>1444-2906</eissn><abstract>Bigeye tuna
Thunnus obesus
is considered an important fishery species around the world. There is no adequate genetic data available for the
T. obesus
population. Polymorphism of sequence variations in mitochondrial Cyt
b
genes were assessed to explore the level of genetic variability and differentiation among eight populations of
T. obesus
sampled from the central Pacific Ocean. Overall, a total of 44 mtDNA haplotypes and 26 variable sites were detected in the 686 bp segment of mtDNA Cyt
b
gene. Nucleotide diversity ranged from 0.17 to 0.27 % and the haplotype diversity ranged from 0.604 to 0.793. An analysis of molecular variance (AMOVA) test of bigeye tuna revealed that 99.38 % of the genetic variation occurred within populations. Both the maximum likelihood tree and the haplotype network indicated that two lineages of bigeye tuna coexisted in the central Pacific Ocean. Hierarchical AMOVA tests and pairwise analysis revealed no geographical isolation among haplotypes within the two lineages. High
N
m values from this investigation indicated high rates of gene flow between the two sampling regions. Furthermore, tests of neutrality and mismatch distribution suggested that
T. obesus
might have experienced a population expansion, one that possibly occurred 110,000 years ago. Our study firstly unraveled the population genetic structure of the
T. obesus
in the central Pacific Ocean, and addressed the related fishery management issues including fishery stock identification, management, and conservation.</abstract><cop>Tokyo</cop><pub>Springer Japan</pub><doi>10.1007/s12562-014-0712-3</doi><tpages>12</tpages></addata></record> |
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| ispartof | Fisheries science, 2014-05, Vol.80 (3), p.415-426 |
| issn | 0919-9268 1444-2906 |
| language | eng |
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| source | SpringerLink Journals - AutoHoldings |
| subjects | Bats Biomedical and Life Sciences Fish Fish & Wildlife Biology & Management Fisheries Fisheries management Fishery sciences Fishing Food Science Freshwater & Marine Ecology Genetic diversity Genetic structure Haplotypes Life Sciences Marine Mitochondrial DNA Original Article Phylogenetics Population Population genetics Population growth Population structure Software Studies Thunnus obesus Tuna |
| title | Genetic population structure of the bigeye tuna Thunnus obesus in the central Pacific Ocean based on mtDNA Cytb sequences |
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