One in a Million: Genetic Diversity and Conservation of the Reference <i>Crassostrea angulata</i> Population in Europe from the Sado Estuary (Portugal)
The production of cupped oysters is an important component of European aquaculture. Most of the production relies on the cultivation of the Pacific oyster <i>Crassostrea gigas</i>, although the Portuguese oyster <i>Crassostrea angulata</i> represents a valuable product with b...
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MDPI AG
2021-11-01
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| author | Stefania Chiesa Livia Lucentini Paula Chainho Federico Plazzi Maria Manuel Angélico Francisco Ruano Rosa Freitas José Lino Costa |
| author_facet | Stefania Chiesa Livia Lucentini Paula Chainho Federico Plazzi Maria Manuel Angélico Francisco Ruano Rosa Freitas José Lino Costa |
| author_sort | Stefania Chiesa |
| collection | DOAJ |
| description | The production of cupped oysters is an important component of European aquaculture. Most of the production relies on the cultivation of the Pacific oyster <i>Crassostrea gigas</i>, although the Portuguese oyster <i>Crassostrea angulata</i> represents a valuable product with both cultural and economic relevance, especially in Portugal. The authors of the present study investigated the genetic diversity of Portuguese oyster populations of the Sado estuary, both from natural oyster beds and aquaculture facilities, through <i>cox1</i> gene fragment sequencing. Then, a comparison with a wide dataset of cupped oyster sequences obtained from GenBank (up to now the widest available dataset in literature for the Portuguese oyster) was performed. Genetic data obtained from this work confirmed that the Pacific oyster does not occur in the natural oyster beds of the Sado estuary but showed that the species occasionally occurs in the oyster hatcheries. Moreover, the results showed that despite the founder effect and the bottleneck events that the Sado populations have experienced, they still exhibit high haplotype diversity. Risks are arising for the conservation of the Portuguese oyster reference populations of the Sado estuary due to the occurrence of the Pacific oyster in the local hatcheries. Therefore, researchers, local authorities, and oyster producers should work together to avoid the loss of this valuable resource. |
| first_indexed | 2024-03-10T05:20:27Z |
| format | Article |
| id | doaj.art-236acf2e2caa45959f9a8a0242165e8d |
| institution | Directory Open Access Journal |
| issn | 2075-1729 |
| language | English |
| last_indexed | 2024-03-10T05:20:27Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Life |
| spelling | doaj.art-236acf2e2caa45959f9a8a0242165e8d2023-11-23T00:03:56ZengMDPI AGLife2075-17292021-11-011111117310.3390/life11111173One in a Million: Genetic Diversity and Conservation of the Reference <i>Crassostrea angulata</i> Population in Europe from the Sado Estuary (Portugal)Stefania Chiesa0Livia Lucentini1Paula Chainho2Federico Plazzi3Maria Manuel Angélico4Francisco Ruano5Rosa Freitas6José Lino Costa7Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172 Venice, ItalyDepartment of Chemistry, Biology and Biotechnologies, University of Perugia, 06123 Perugia, ItalyMARE—Marine and Environmental Sciences Centre, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, PortugalDepartment of Biological, Geological and Environmental Sciences, University of Bologna, 40126 Bologna, ItalyDepartment of Sea and Marine Resources, IPMA—Portuguese Institute of Sea and Atmosphere, 1495-006 Lisboa, PortugalDepartment of Sea and Marine Resources, IPMA—Portuguese Institute of Sea and Atmosphere, 1495-006 Lisboa, PortugalDepartment of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, PortugalMARE—Marine and Environmental Sciences Centre, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, PortugalThe production of cupped oysters is an important component of European aquaculture. Most of the production relies on the cultivation of the Pacific oyster <i>Crassostrea gigas</i>, although the Portuguese oyster <i>Crassostrea angulata</i> represents a valuable product with both cultural and economic relevance, especially in Portugal. The authors of the present study investigated the genetic diversity of Portuguese oyster populations of the Sado estuary, both from natural oyster beds and aquaculture facilities, through <i>cox1</i> gene fragment sequencing. Then, a comparison with a wide dataset of cupped oyster sequences obtained from GenBank (up to now the widest available dataset in literature for the Portuguese oyster) was performed. Genetic data obtained from this work confirmed that the Pacific oyster does not occur in the natural oyster beds of the Sado estuary but showed that the species occasionally occurs in the oyster hatcheries. Moreover, the results showed that despite the founder effect and the bottleneck events that the Sado populations have experienced, they still exhibit high haplotype diversity. Risks are arising for the conservation of the Portuguese oyster reference populations of the Sado estuary due to the occurrence of the Pacific oyster in the local hatcheries. Therefore, researchers, local authorities, and oyster producers should work together to avoid the loss of this valuable resource.https://www.mdpi.com/2075-1729/11/11/1173<i>Crassostrea angulata</i>Portuguese oystermtDNA<i>cox1</i>phylogeographyphylogenetics |
| spellingShingle | Stefania Chiesa Livia Lucentini Paula Chainho Federico Plazzi Maria Manuel Angélico Francisco Ruano Rosa Freitas José Lino Costa One in a Million: Genetic Diversity and Conservation of the Reference <i>Crassostrea angulata</i> Population in Europe from the Sado Estuary (Portugal) Life <i>Crassostrea angulata</i> Portuguese oyster mtDNA <i>cox1</i> phylogeography phylogenetics |
| title | One in a Million: Genetic Diversity and Conservation of the Reference <i>Crassostrea angulata</i> Population in Europe from the Sado Estuary (Portugal) |
| title_full | One in a Million: Genetic Diversity and Conservation of the Reference <i>Crassostrea angulata</i> Population in Europe from the Sado Estuary (Portugal) |
| title_fullStr | One in a Million: Genetic Diversity and Conservation of the Reference <i>Crassostrea angulata</i> Population in Europe from the Sado Estuary (Portugal) |
| title_full_unstemmed | One in a Million: Genetic Diversity and Conservation of the Reference <i>Crassostrea angulata</i> Population in Europe from the Sado Estuary (Portugal) |
| title_short | One in a Million: Genetic Diversity and Conservation of the Reference <i>Crassostrea angulata</i> Population in Europe from the Sado Estuary (Portugal) |
| title_sort | one in a million genetic diversity and conservation of the reference i crassostrea angulata i population in europe from the sado estuary portugal |
| topic | <i>Crassostrea angulata</i> Portuguese oyster mtDNA <i>cox1</i> phylogeography phylogenetics |
| url | https://www.mdpi.com/2075-1729/11/11/1173 |
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