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Genetic diversity comparison among invasive fish populations (Nemipterus randalli and Serranus cabrilla) from Mediterranean and Red Sea coastal waters using cytochrome c oxidase subunit I (COI)
Since the Suez Canal connected the Red Sea with the Mediterranean, several fish species have migrated between the two seas. Nemipterus randalli has crossed from the Red Sea to the Mediterranean (Lessepsian migration) whereas Serranus cabrilla is considered to have crossed in the reverse direction (a...
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2019
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| _version_ | 1867613411848749056 |
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| access_status_str | Open Access |
| author | Ogwang, Joel |
| author_browse | Ogwang, Joel |
| author_facet | Ogwang, Joel |
| author_sort | Ogwang, Joel |
| collection | Thesis |
| dc_rights_str_mv | The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. http://creativecommons.org/licenses/by-nc/4.0/ |
| description | Since the Suez Canal connected the Red Sea with the Mediterranean, several fish species have migrated between the two seas. Nemipterus randalli has crossed from the Red Sea to the Mediterranean (Lessepsian migration) whereas Serranus cabrilla is considered to have crossed in the reverse direction (anti-Lessepsian migration). Genetic variation between populations of these fish species on either side of the Suez Canal might provide valuable information on their patterns of migration. In this study, 600 bp of cytochrome c oxidase subunit I (COI) sequences were used to compare genetic diversity of populations of N. randalli from the eastern Mediterranean with a population off the Red Sea coast near Hurghada, Egypt. For comparison, three other Nemipterus species were included. Similarly, genetic diversity of Serranus cabrilla from the Gulf of Suez was compared with populations in the eastern Mediterranean Sea. A Maximum Likelihood (ML) tree was constructed using Molecular Evolutionary Genetics Analysis version 7 (MEGA7) software to visualize the evolutionary relationships of S. cabrilla and Nemipterus species of the two seas. Population structures of N. randalli and S. cabrilla were assessed by constructing haplotype networks using PopART. Results from COI sequence divergence analysis revealed possible existence of cryptic species of N. bipunctatus in the Red Sea. Although the ML tree resolved Nemipterus species into four clades representing the four species analyzed, all N. randalli sequences from both seas formed a single clade. Genetic diversity analysis revealed that Mediterranean populations of N. randalli share one haplotype from the Red Sea and supported unidirectional multiple invasion events from the Red Sea to the Mediterranean Sea. Meanwhile, S. cabrilla sequences formed two phylogenetic clades representing the Gulf of Suez and eastern Mediterranean Sea populations. S. cabrilla from the Gulf of Suez also had a significantly reduced sequence divergence compared to Mediterranean Sea populations. In addition, none of the 17 haplotypes in the Mediterranean Sea was found among the 12 haplotypes in the Gulf of Suez. Together, these results provided evidence that the S. cabrilla population in the Gulf of Suez did not come from the Mediterranean Sea through the Suez Canal as was previously thought. According to these results, reported cases of invasion on either side of the Suez Canal should be followed by genetic investigations on a species-by-species basis. |
| format | Thesis |
| id | oai:fount.aucegypt.edu:etds-1718 |
| institution | American University in Cairo (Egypt) |
| last_indexed | 2026-06-10T12:35:43.583Z |
| license_str | Creative Commons |
| provenance_str_mv | Harvested via OAI-PMH from AUC Knowledge Fountain — bepress |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | AUC Knowledge Fountain |
| publisherStr | AUC Knowledge Fountain |
| record_format | dspace |
| source_str | AUC Knowledge Fountain — bepress |
| spelling | oai:fount.aucegypt.edu:etds-1718 Genetic diversity comparison among invasive fish populations (Nemipterus randalli and Serranus cabrilla) from Mediterranean and Red Sea coastal waters using cytochrome c oxidase subunit I (COI) Ogwang, Joel Since the Suez Canal connected the Red Sea with the Mediterranean, several fish species have migrated between the two seas. Nemipterus randalli has crossed from the Red Sea to the Mediterranean (Lessepsian migration) whereas Serranus cabrilla is considered to have crossed in the reverse direction (anti-Lessepsian migration). Genetic variation between populations of these fish species on either side of the Suez Canal might provide valuable information on their patterns of migration. In this study, 600 bp of cytochrome c oxidase subunit I (COI) sequences were used to compare genetic diversity of populations of N. randalli from the eastern Mediterranean with a population off the Red Sea coast near Hurghada, Egypt. For comparison, three other Nemipterus species were included. Similarly, genetic diversity of Serranus cabrilla from the Gulf of Suez was compared with populations in the eastern Mediterranean Sea. A Maximum Likelihood (ML) tree was constructed using Molecular Evolutionary Genetics Analysis version 7 (MEGA7) software to visualize the evolutionary relationships of S. cabrilla and Nemipterus species of the two seas. Population structures of N. randalli and S. cabrilla were assessed by constructing haplotype networks using PopART. Results from COI sequence divergence analysis revealed possible existence of cryptic species of N. bipunctatus in the Red Sea. Although the ML tree resolved Nemipterus species into four clades representing the four species analyzed, all N. randalli sequences from both seas formed a single clade. Genetic diversity analysis revealed that Mediterranean populations of N. randalli share one haplotype from the Red Sea and supported unidirectional multiple invasion events from the Red Sea to the Mediterranean Sea. Meanwhile, S. cabrilla sequences formed two phylogenetic clades representing the Gulf of Suez and eastern Mediterranean Sea populations. S. cabrilla from the Gulf of Suez also had a significantly reduced sequence divergence compared to Mediterranean Sea populations. In addition, none of the 17 haplotypes in the Mediterranean Sea was found among the 12 haplotypes in the Gulf of Suez. Together, these results provided evidence that the S. cabrilla population in the Gulf of Suez did not come from the Mediterranean Sea through the Suez Canal as was previously thought. According to these results, reported cases of invasion on either side of the Suez Canal should be followed by genetic investigations on a species-by-species basis. 2019-02-01T08:00:00Z thesis application/pdf https://fount.aucegypt.edu/etds/719 https://fount.aucegypt.edu/context/etds/article/1718/viewcontent/Final_thesis.pdf The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. http://creativecommons.org/licenses/by-nc/4.0/ Theses and Dissertations AUC Knowledge Fountain anti-Lessepsian migration COI haplotype diversity invasive species Lessepsian migration Nemipterus randalli nucleotide diversity Serranus cabrilla. NA NA Other Physical Sciences and Mathematics Physical Sciences and Mathematics |
| spellingShingle | anti-Lessepsian migration COI haplotype diversity invasive species Lessepsian migration Nemipterus randalli nucleotide diversity Serranus cabrilla. NA NA Other Physical Sciences and Mathematics Physical Sciences and Mathematics Ogwang, Joel Genetic diversity comparison among invasive fish populations (Nemipterus randalli and Serranus cabrilla) from Mediterranean and Red Sea coastal waters using cytochrome c oxidase subunit I (COI) |
| title | Genetic diversity comparison among invasive fish populations (Nemipterus randalli and Serranus cabrilla) from Mediterranean and Red Sea coastal waters using cytochrome c oxidase subunit I (COI) |
| title_full | Genetic diversity comparison among invasive fish populations (Nemipterus randalli and Serranus cabrilla) from Mediterranean and Red Sea coastal waters using cytochrome c oxidase subunit I (COI) |
| title_fullStr | Genetic diversity comparison among invasive fish populations (Nemipterus randalli and Serranus cabrilla) from Mediterranean and Red Sea coastal waters using cytochrome c oxidase subunit I (COI) |
| title_full_unstemmed | Genetic diversity comparison among invasive fish populations (Nemipterus randalli and Serranus cabrilla) from Mediterranean and Red Sea coastal waters using cytochrome c oxidase subunit I (COI) |
| title_short | Genetic diversity comparison among invasive fish populations (Nemipterus randalli and Serranus cabrilla) from Mediterranean and Red Sea coastal waters using cytochrome c oxidase subunit I (COI) |
| title_sort | genetic diversity comparison among invasive fish populations nemipterus randalli and serranus cabrilla from mediterranean and red sea coastal waters using cytochrome c oxidase subunit i coi |
| topic | anti-Lessepsian migration COI haplotype diversity invasive species Lessepsian migration Nemipterus randalli nucleotide diversity Serranus cabrilla. NA NA Other Physical Sciences and Mathematics Physical Sciences and Mathematics |
| url | https://fount.aucegypt.edu/etds/719 https://fount.aucegypt.edu/context/etds/article/1718/viewcontent/Final_thesis.pdf |
| work_keys_str_mv | AT ogwangjoel geneticdiversitycomparisonamonginvasivefishpopulationsnemipterusrandalliandserranuscabrillafrommediterraneanandredseacoastalwatersusingcytochromecoxidasesubuniticoi |