Genetic Diversity and Population Dynamics of Invasive <i>Ascidiella aspersa</i>: Insights from Cytochrome Oxidase Subunit I and 18S rDNA Analyses in Korean and Global Populations
<i>Ascidiella aspersa</i>, originally native to the northeastern Atlantic, has emerged as a prolific invasive species in coastal waters worldwide. In 2010, it was identified as an alien species in Republic of Korea, rapidly colonizing artificial harbor structures and outcompeting native...
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MDPI AG
2023-11-01
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| Online Access: | https://www.mdpi.com/2073-4441/15/22/3886 |
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| author | Jeounghee Lee Soyeon Kwon Michael Dadole Ubagan Taekjun Lee Sook Shin |
| author_facet | Jeounghee Lee Soyeon Kwon Michael Dadole Ubagan Taekjun Lee Sook Shin |
| author_sort | Jeounghee Lee |
| collection | DOAJ |
| description | <i>Ascidiella aspersa</i>, originally native to the northeastern Atlantic, has emerged as a prolific invasive species in coastal waters worldwide. In 2010, it was identified as an alien species in Republic of Korea, rapidly colonizing artificial harbor structures and outcompeting native species. This study employs morphological analyses and genetic sequencing, focusing on mitochondrial DNA (cytochrome oxidase subunit I; mt-COI) and nuclear markers (18S rRNA), to unravel the genetic structure and haplotype diversity (Hd) of <i>A. aspersa</i> populations in Republic of Korea and globally. The analysis of 154 mt-COI and 127 18S rDNA global population sequences, as well as 80 mt-COI and 79 18S-rDNA Korean population sequences, revealed distinct genetic patterns. Among global populations, the mt-COI gene displayed significant genetic diversity, with 21 distinct haplotypes distributed across 41 polymorphic sites, which is indicative of extensive genetic variability. In contrast, the 18S rDNA marker exhibited limited diversity, with only four haplotypes identified at three polymorphic sites. In Korean populations, the mt-COI gene also exhibited substantial genetic diversity, with 14 distinct haplotypes displaying genetic variations at 29 polymorphic sites. Conversely, the 18S rDNA marker in Korean populations revealed a unique genetic pattern, with only one shared haplotype. These findings emphasize the complex genetic diversity within <i>A. aspersa</i> populations, both globally and in Republic of Korea. This genetic analysis provides valuable insights into the species’ colonization history and adaptation mechanisms, shedding light on the factors shaping its genetic structure. Further research is warranted to elucidate the ecological implications of these genetic patterns in the context of invasion biology. |
| first_indexed | 2024-03-09T16:22:37Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T16:22:37Z |
| publishDate | 2023-11-01 |
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| series | Water |
| spelling | doaj.art-5e84c258ef544eafb811e3b1fd3bf6e32023-11-24T15:11:09ZengMDPI AGWater2073-44412023-11-011522388610.3390/w15223886Genetic Diversity and Population Dynamics of Invasive <i>Ascidiella aspersa</i>: Insights from Cytochrome Oxidase Subunit I and 18S rDNA Analyses in Korean and Global PopulationsJeounghee Lee0Soyeon Kwon1Michael Dadole Ubagan2Taekjun Lee3Sook Shin4Marine Biological Resource Institute, Sahmyook University, Seoul 01795, Republic of KoreaDepartment of Animal Biotechnology & Resource, College of Science and Technology, Sahmyook University, Seoul 01795, Republic of KoreaMarine Biological Resource Institute, Sahmyook University, Seoul 01795, Republic of KoreaMarine Biological Resource Institute, Sahmyook University, Seoul 01795, Republic of KoreaMarine Biological Resource Institute, Sahmyook University, Seoul 01795, Republic of Korea<i>Ascidiella aspersa</i>, originally native to the northeastern Atlantic, has emerged as a prolific invasive species in coastal waters worldwide. In 2010, it was identified as an alien species in Republic of Korea, rapidly colonizing artificial harbor structures and outcompeting native species. This study employs morphological analyses and genetic sequencing, focusing on mitochondrial DNA (cytochrome oxidase subunit I; mt-COI) and nuclear markers (18S rRNA), to unravel the genetic structure and haplotype diversity (Hd) of <i>A. aspersa</i> populations in Republic of Korea and globally. The analysis of 154 mt-COI and 127 18S rDNA global population sequences, as well as 80 mt-COI and 79 18S-rDNA Korean population sequences, revealed distinct genetic patterns. Among global populations, the mt-COI gene displayed significant genetic diversity, with 21 distinct haplotypes distributed across 41 polymorphic sites, which is indicative of extensive genetic variability. In contrast, the 18S rDNA marker exhibited limited diversity, with only four haplotypes identified at three polymorphic sites. In Korean populations, the mt-COI gene also exhibited substantial genetic diversity, with 14 distinct haplotypes displaying genetic variations at 29 polymorphic sites. Conversely, the 18S rDNA marker in Korean populations revealed a unique genetic pattern, with only one shared haplotype. These findings emphasize the complex genetic diversity within <i>A. aspersa</i> populations, both globally and in Republic of Korea. This genetic analysis provides valuable insights into the species’ colonization history and adaptation mechanisms, shedding light on the factors shaping its genetic structure. Further research is warranted to elucidate the ecological implications of these genetic patterns in the context of invasion biology.https://www.mdpi.com/2073-4441/15/22/3886invasive marine speciesTunicata<i>Ascidiella aspersa</i>genetic diversityRepublic of Korea populationglobal population |
| spellingShingle | Jeounghee Lee Soyeon Kwon Michael Dadole Ubagan Taekjun Lee Sook Shin Genetic Diversity and Population Dynamics of Invasive <i>Ascidiella aspersa</i>: Insights from Cytochrome Oxidase Subunit I and 18S rDNA Analyses in Korean and Global Populations Water invasive marine species Tunicata <i>Ascidiella aspersa</i> genetic diversity Republic of Korea population global population |
| title | Genetic Diversity and Population Dynamics of Invasive <i>Ascidiella aspersa</i>: Insights from Cytochrome Oxidase Subunit I and 18S rDNA Analyses in Korean and Global Populations |
| title_full | Genetic Diversity and Population Dynamics of Invasive <i>Ascidiella aspersa</i>: Insights from Cytochrome Oxidase Subunit I and 18S rDNA Analyses in Korean and Global Populations |
| title_fullStr | Genetic Diversity and Population Dynamics of Invasive <i>Ascidiella aspersa</i>: Insights from Cytochrome Oxidase Subunit I and 18S rDNA Analyses in Korean and Global Populations |
| title_full_unstemmed | Genetic Diversity and Population Dynamics of Invasive <i>Ascidiella aspersa</i>: Insights from Cytochrome Oxidase Subunit I and 18S rDNA Analyses in Korean and Global Populations |
| title_short | Genetic Diversity and Population Dynamics of Invasive <i>Ascidiella aspersa</i>: Insights from Cytochrome Oxidase Subunit I and 18S rDNA Analyses in Korean and Global Populations |
| title_sort | genetic diversity and population dynamics of invasive i ascidiella aspersa i insights from cytochrome oxidase subunit i and 18s rdna analyses in korean and global populations |
| topic | invasive marine species Tunicata <i>Ascidiella aspersa</i> genetic diversity Republic of Korea population global population |
| url | https://www.mdpi.com/2073-4441/15/22/3886 |
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