Populations of the Invasive Mussel <i>Mytella strigata</i> in China Showed Lower Genetic Diversity in Autumn than in Spring
Native to tropical America, the charru mussel, <i>Mytella strigata</i>, has been spreading rapidly in the West Pacific Ocean, including the South China Sea. In order to study the adaptive evolution of <i>M. strigata</i> and examine the present status of invasion in China, the...
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2024-12-01
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| author | Peizhen Ma Chenxia Zuo Shaojing Yan Xiangyu Wu Xiaojie Ma Yi Zhu Zhen Zhang |
| author_facet | Peizhen Ma Chenxia Zuo Shaojing Yan Xiangyu Wu Xiaojie Ma Yi Zhu Zhen Zhang |
| author_sort | Peizhen Ma |
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| description | Native to tropical America, the charru mussel, <i>Mytella strigata</i>, has been spreading rapidly in the West Pacific Ocean, including the South China Sea. In order to study the adaptive evolution of <i>M. strigata</i> and examine the present status of invasion in China, the mitochondrial <i>nad2</i> gene fragment was employed to analyze the genetic variations of seven populations sampled in both spring and autumn 2023. Results showed that all the populations had high haplotype diversity (>0.5) and low nucleotide diversity (<0.005), suggesting the ongoing rapid expansion following a genetic bottleneck. The Zhanjiang population had the highest genetic diversity in spring with 22 haplotypes, 37 polymorphic sites, and haplotype diversity, nucleotide diversity, and the average number of nucleotide differences being 0.911, 0.00623, and 4.341, respectively. However, in autumn, the Shanwei population had the most haplotypes (11) and polymorphic sites (19), with the highest haplotype diversity value of 0.891, while the Qunjian population had the highest nucleotide diversity (0.00392) and average number of nucleotide differences (2.809). Combining geographic populations by seasons confirmed lower genetic diversity in autumn compared to spring, evidenced by fewer haplotypes and polymorphic sites, reduced haplotype diversity and nucleotide diversity, and lower genetic distance within populations. These findings provided evidence for understanding the molecular characteristics of <i>M. strigata</i> population expansion in China. |
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| institution | Kabale University |
| issn | 2079-7737 |
| language | English |
| publishDate | 2024-12-01 |
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| spelling | doaj-art-e6c1a21362d24363bb153f1ccf2c22f82025-01-24T13:23:18ZengMDPI AGBiology2079-77372024-12-011411610.3390/biology14010016Populations of the Invasive Mussel <i>Mytella strigata</i> in China Showed Lower Genetic Diversity in Autumn than in SpringPeizhen Ma0Chenxia Zuo1Shaojing Yan2Xiangyu Wu3Xiaojie Ma4Yi Zhu5Zhen Zhang6Laboratory of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaLaboratory of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaLaboratory of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaHainan Provincial Key Laboratory of Tropical Maricultural Technology, Hainan Academy of Ocean and Fisheries Sciences, Haikou 571126, ChinaLaboratory of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaLaboratory of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaLaboratory of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaNative to tropical America, the charru mussel, <i>Mytella strigata</i>, has been spreading rapidly in the West Pacific Ocean, including the South China Sea. In order to study the adaptive evolution of <i>M. strigata</i> and examine the present status of invasion in China, the mitochondrial <i>nad2</i> gene fragment was employed to analyze the genetic variations of seven populations sampled in both spring and autumn 2023. Results showed that all the populations had high haplotype diversity (>0.5) and low nucleotide diversity (<0.005), suggesting the ongoing rapid expansion following a genetic bottleneck. The Zhanjiang population had the highest genetic diversity in spring with 22 haplotypes, 37 polymorphic sites, and haplotype diversity, nucleotide diversity, and the average number of nucleotide differences being 0.911, 0.00623, and 4.341, respectively. However, in autumn, the Shanwei population had the most haplotypes (11) and polymorphic sites (19), with the highest haplotype diversity value of 0.891, while the Qunjian population had the highest nucleotide diversity (0.00392) and average number of nucleotide differences (2.809). Combining geographic populations by seasons confirmed lower genetic diversity in autumn compared to spring, evidenced by fewer haplotypes and polymorphic sites, reduced haplotype diversity and nucleotide diversity, and lower genetic distance within populations. These findings provided evidence for understanding the molecular characteristics of <i>M. strigata</i> population expansion in China.https://www.mdpi.com/2079-7737/14/1/16biodiversitybiological invasionmusselpopulation genetics |
| spellingShingle | Peizhen Ma Chenxia Zuo Shaojing Yan Xiangyu Wu Xiaojie Ma Yi Zhu Zhen Zhang Populations of the Invasive Mussel <i>Mytella strigata</i> in China Showed Lower Genetic Diversity in Autumn than in Spring Biology biodiversity biological invasion mussel population genetics |
| title | Populations of the Invasive Mussel <i>Mytella strigata</i> in China Showed Lower Genetic Diversity in Autumn than in Spring |
| title_full | Populations of the Invasive Mussel <i>Mytella strigata</i> in China Showed Lower Genetic Diversity in Autumn than in Spring |
| title_fullStr | Populations of the Invasive Mussel <i>Mytella strigata</i> in China Showed Lower Genetic Diversity in Autumn than in Spring |
| title_full_unstemmed | Populations of the Invasive Mussel <i>Mytella strigata</i> in China Showed Lower Genetic Diversity in Autumn than in Spring |
| title_short | Populations of the Invasive Mussel <i>Mytella strigata</i> in China Showed Lower Genetic Diversity in Autumn than in Spring |
| title_sort | populations of the invasive mussel i mytella strigata i in china showed lower genetic diversity in autumn than in spring |
| topic | biodiversity biological invasion mussel population genetics |
| url | https://www.mdpi.com/2079-7737/14/1/16 |
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