Declining Population Sizes and Loss of Genetic Diversity in Commercial Fishes: A Simple Method for a First Diagnostic
Exploited fish species may have or are experiencing declines in population sizes coupled with changes in their environmental conditions owing to global change. Declining populations might lead to a decrease in genetic diversity, which in turn may produce losses of adaptive potential to face current...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2022.872537/full |
| _version_ | 1811233415734755328 |
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| author | Natalia Petit-Marty Min Liu Iris Ziying Tan Arthur Chung Bàrbara Terrasa Beatriz Guijarro Francesc Ordines Sergio Ramírez-Amaro Sergio Ramírez-Amaro Enric Massutí Celia Schunter |
| author_facet | Natalia Petit-Marty Min Liu Iris Ziying Tan Arthur Chung Bàrbara Terrasa Beatriz Guijarro Francesc Ordines Sergio Ramírez-Amaro Sergio Ramírez-Amaro Enric Massutí Celia Schunter |
| author_sort | Natalia Petit-Marty |
| collection | DOAJ |
| description | Exploited fish species may have or are experiencing declines in population sizes coupled with changes in their environmental conditions owing to global change. Declining populations might lead to a decrease in genetic diversity, which in turn may produce losses of adaptive potential to face current and future environmental changes. Thus, this study aims to answer a simple, even naive question, given the complexity of the subject: Could we use a simple method to obtain information on the loss of genetic diversity in exploited fish species? We investigated the use of the levels of genetic diversity in the widely used genetic marker Cytochrome C Oxidase subunit I (COI) mitochondrial gene. Estimates of genetic diversity in COI were obtained for populations of seven fish species with different commercial importance from the East China Sea. These estimates were contrasted against large datasets of genetic diversity in COI for fish species (East-Asian N=118, and worldwide N=1425), and six control species with known biology and history. We found that estimates of genetic diversity in COI match the expectations from theoretical predictions and known declines by fishing pressures. Thus, the answer to our question is affirmative and we conclude that estimates of genetic diversity in COI provide an effective first diagnostic of the conservation status of exploited fish species. |
| first_indexed | 2024-04-12T11:20:03Z |
| format | Article |
| id | doaj.art-56dc084cee6c41f59bbaa0f250fc8029 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-12T11:20:03Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-56dc084cee6c41f59bbaa0f250fc80292022-12-22T03:35:24ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452022-05-01910.3389/fmars.2022.872537872537Declining Population Sizes and Loss of Genetic Diversity in Commercial Fishes: A Simple Method for a First DiagnosticNatalia Petit-Marty0Min Liu1Iris Ziying Tan2Arthur Chung3Bàrbara Terrasa4Beatriz Guijarro5Francesc Ordines6Sergio Ramírez-Amaro7Sergio Ramírez-Amaro8Enric Massutí9Celia Schunter10School of Biological Sciences and Swire Institute of Marine Science, The University of Hong Kong, Hong Kong SAR, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen, ChinaSchool of Biological Sciences and Swire Institute of Marine Science, The University of Hong Kong, Hong Kong SAR, ChinaSchool of Biological Sciences and Swire Institute of Marine Science, The University of Hong Kong, Hong Kong SAR, ChinaLaboratori de Genètica, Universitat de les Illes Balears, Palma, SpainInstituto Español de Oceanografía (IEO-CSIC), Centre Oceanogràfic de les Balears, Palma, SpainInstituto Español de Oceanografía (IEO-CSIC), Centre Oceanogràfic de les Balears, Palma, SpainLaboratori de Genètica, Universitat de les Illes Balears, Palma, SpainInstituto Español de Oceanografía (IEO-CSIC), Centre Oceanogràfic de les Balears, Palma, SpainInstituto Español de Oceanografía (IEO-CSIC), Centre Oceanogràfic de les Balears, Palma, SpainSchool of Biological Sciences and Swire Institute of Marine Science, The University of Hong Kong, Hong Kong SAR, ChinaExploited fish species may have or are experiencing declines in population sizes coupled with changes in their environmental conditions owing to global change. Declining populations might lead to a decrease in genetic diversity, which in turn may produce losses of adaptive potential to face current and future environmental changes. Thus, this study aims to answer a simple, even naive question, given the complexity of the subject: Could we use a simple method to obtain information on the loss of genetic diversity in exploited fish species? We investigated the use of the levels of genetic diversity in the widely used genetic marker Cytochrome C Oxidase subunit I (COI) mitochondrial gene. Estimates of genetic diversity in COI were obtained for populations of seven fish species with different commercial importance from the East China Sea. These estimates were contrasted against large datasets of genetic diversity in COI for fish species (East-Asian N=118, and worldwide N=1425), and six control species with known biology and history. We found that estimates of genetic diversity in COI match the expectations from theoretical predictions and known declines by fishing pressures. Thus, the answer to our question is affirmative and we conclude that estimates of genetic diversity in COI provide an effective first diagnostic of the conservation status of exploited fish species.https://www.frontiersin.org/articles/10.3389/fmars.2022.872537/fulladaptive potentialCOI barcodeconservationfisheriesglobal changeover-fishing |
| spellingShingle | Natalia Petit-Marty Min Liu Iris Ziying Tan Arthur Chung Bàrbara Terrasa Beatriz Guijarro Francesc Ordines Sergio Ramírez-Amaro Sergio Ramírez-Amaro Enric Massutí Celia Schunter Declining Population Sizes and Loss of Genetic Diversity in Commercial Fishes: A Simple Method for a First Diagnostic Frontiers in Marine Science adaptive potential COI barcode conservation fisheries global change over-fishing |
| title | Declining Population Sizes and Loss of Genetic Diversity in Commercial Fishes: A Simple Method for a First Diagnostic |
| title_full | Declining Population Sizes and Loss of Genetic Diversity in Commercial Fishes: A Simple Method for a First Diagnostic |
| title_fullStr | Declining Population Sizes and Loss of Genetic Diversity in Commercial Fishes: A Simple Method for a First Diagnostic |
| title_full_unstemmed | Declining Population Sizes and Loss of Genetic Diversity in Commercial Fishes: A Simple Method for a First Diagnostic |
| title_short | Declining Population Sizes and Loss of Genetic Diversity in Commercial Fishes: A Simple Method for a First Diagnostic |
| title_sort | declining population sizes and loss of genetic diversity in commercial fishes a simple method for a first diagnostic |
| topic | adaptive potential COI barcode conservation fisheries global change over-fishing |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2022.872537/full |
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