Genetic pattern and demographic history of cutlassfish (Trichiurus nanhaiensis) in South China Sea by the influence of Pleistocene climatic oscillations
Abstract Trichiurus nanhaiensis is one of the most important commercial fish species in the South China Sea. This study aimed to investigate the level of genetic variation and population genetic structure of T. nanhaiensis in the South China Sea for the first time, using 281 individuals collected fr...
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Nature Portfolio
2022-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-18861-x |
| _version_ | 1811297351061471232 |
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| author | Sui Gu Yun-Rong Yan Mu-Rong Yi Zhi-Sen Luo Hui Wen Chang-Ping Jiang Hung-Du Lin Xiong-Bo He |
| author_facet | Sui Gu Yun-Rong Yan Mu-Rong Yi Zhi-Sen Luo Hui Wen Chang-Ping Jiang Hung-Du Lin Xiong-Bo He |
| author_sort | Sui Gu |
| collection | DOAJ |
| description | Abstract Trichiurus nanhaiensis is one of the most important commercial fish species in the South China Sea. This study aimed to investigate the level of genetic variation and population genetic structure of T. nanhaiensis in the South China Sea for the first time, using 281 individuals collected from seven locations along the coast of mainland China, Taiwan, and Hainan Island. A high level of haplotype diversity and low nucleotide diversity were detected in the mitochondrial DNA cyt b gene and nuDNA RYR 3 gene. The overall expected heterozygosity (He = 0.693) among the seven populations ranged from 0.681 to 0.706 in microsatellite DNA data, which revealed high levels of genetic diversity. Significant genetic differentiation was found in Taidong populations in Taiwan, revealing the prevention of gene flow caused by the Kuroshio Current. Two major lineages based on the cyt b gene suggested that the Taiwan Strait acted as a geographic barrier for T. nanhaiensis during the glacier periods in the late Pleistocene. The Bayesian skyline plot also revealed that population demographic expansion of T. nanhaiensis was estimated to have occurred in 0.1 Mya. Our results indicated that all populations of T. nanhaiensis had experienced a recent genetic bottleneck following recent expansion based on ABC analysis. |
| first_indexed | 2024-04-13T06:02:58Z |
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| id | doaj.art-1c206e9069df4d0d8dacbf418ce8c4cb |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-13T06:02:58Z |
| publishDate | 2022-08-01 |
| publisher | Nature Portfolio |
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| spelling | doaj.art-1c206e9069df4d0d8dacbf418ce8c4cb2022-12-22T02:59:22ZengNature PortfolioScientific Reports2045-23222022-08-0112111310.1038/s41598-022-18861-xGenetic pattern and demographic history of cutlassfish (Trichiurus nanhaiensis) in South China Sea by the influence of Pleistocene climatic oscillationsSui Gu0Yun-Rong Yan1Mu-Rong Yi2Zhi-Sen Luo3Hui Wen4Chang-Ping Jiang5Hung-Du Lin6Xiong-Bo He7College of Fisheries, Guangdong Ocean UniversityCollege of Fisheries, Guangdong Ocean UniversityCollege of Fisheries, Guangdong Ocean UniversityCollege of Fisheries, Guangdong Ocean UniversityCollege of Fisheries, Guangdong Ocean UniversityCollege of Fisheries, Guangdong Ocean UniversityThe Affiliated School of National Tainan First Senior High SchoolCollege of Fisheries, Guangdong Ocean UniversityAbstract Trichiurus nanhaiensis is one of the most important commercial fish species in the South China Sea. This study aimed to investigate the level of genetic variation and population genetic structure of T. nanhaiensis in the South China Sea for the first time, using 281 individuals collected from seven locations along the coast of mainland China, Taiwan, and Hainan Island. A high level of haplotype diversity and low nucleotide diversity were detected in the mitochondrial DNA cyt b gene and nuDNA RYR 3 gene. The overall expected heterozygosity (He = 0.693) among the seven populations ranged from 0.681 to 0.706 in microsatellite DNA data, which revealed high levels of genetic diversity. Significant genetic differentiation was found in Taidong populations in Taiwan, revealing the prevention of gene flow caused by the Kuroshio Current. Two major lineages based on the cyt b gene suggested that the Taiwan Strait acted as a geographic barrier for T. nanhaiensis during the glacier periods in the late Pleistocene. The Bayesian skyline plot also revealed that population demographic expansion of T. nanhaiensis was estimated to have occurred in 0.1 Mya. Our results indicated that all populations of T. nanhaiensis had experienced a recent genetic bottleneck following recent expansion based on ABC analysis.https://doi.org/10.1038/s41598-022-18861-x |
| spellingShingle | Sui Gu Yun-Rong Yan Mu-Rong Yi Zhi-Sen Luo Hui Wen Chang-Ping Jiang Hung-Du Lin Xiong-Bo He Genetic pattern and demographic history of cutlassfish (Trichiurus nanhaiensis) in South China Sea by the influence of Pleistocene climatic oscillations Scientific Reports |
| title | Genetic pattern and demographic history of cutlassfish (Trichiurus nanhaiensis) in South China Sea by the influence of Pleistocene climatic oscillations |
| title_full | Genetic pattern and demographic history of cutlassfish (Trichiurus nanhaiensis) in South China Sea by the influence of Pleistocene climatic oscillations |
| title_fullStr | Genetic pattern and demographic history of cutlassfish (Trichiurus nanhaiensis) in South China Sea by the influence of Pleistocene climatic oscillations |
| title_full_unstemmed | Genetic pattern and demographic history of cutlassfish (Trichiurus nanhaiensis) in South China Sea by the influence of Pleistocene climatic oscillations |
| title_short | Genetic pattern and demographic history of cutlassfish (Trichiurus nanhaiensis) in South China Sea by the influence of Pleistocene climatic oscillations |
| title_sort | genetic pattern and demographic history of cutlassfish trichiurus nanhaiensis in south china sea by the influence of pleistocene climatic oscillations |
| url | https://doi.org/10.1038/s41598-022-18861-x |
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