Genetic diversity of two successive generations of selection in bighead catfish (Clarias macrocephalus) populations
Selective programs associated with domestication can improve fish production but also can have an impact on broodstock’s genetic diversity. In this study, the genetic diversity of original sources (G0) from wild and cultured bighead catfish populations, as well as the two successive generations (G1...
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| Format: | Article |
| Language: | English |
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CAN THO UNIVERSITY PUBLISHING HOUSE
2022-11-01
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| Series: | Can Tho University Journal of Science |
| Subjects: | |
| Online Access: | https://ctujs.ctu.edu.vn/index.php/ctujs/article/view/432 |
| _version_ | 1797975344708321280 |
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| author | Thuy Yen Duong Thi Ngoc Tran Nguyen |
| author_facet | Thuy Yen Duong Thi Ngoc Tran Nguyen |
| author_sort | Thuy Yen Duong |
| collection | DOAJ |
| description |
Selective programs associated with domestication can improve fish production but also can have an impact on broodstock’s genetic diversity. In this study, the genetic diversity of original sources (G0) from wild and cultured bighead catfish populations, as well as the two successive generations (G1 and G2) subjected to selection experiments, was assessed. G0 wild adults were collected in Ca Mau conservation area and G0 cultured fish were from a hatchery in Can Tho. The G1 fish included pure crosses and crossbreeds of G0, while G2 was the offspring of the selected G1. Fin clips from 27 to 29 individuals of each fish group were randomly sampled for genetic analysis. The amplification results using six ISSR primers showed that the genetic diversity was relatively higher in G0 (effective number of alleles Ne from 1.43 to 1.49; heterozygosity He from 0.265 to 0.290) than in G1 (Ne = 1.32±0.04; He = 0.201±0.023) and G2 (Ne = 1.34±0.04; He = 0.216±0.023). Genetic differences increased between the original populations and the descending generations. To reduce the detrimental impacts of low genetic diversity in domesticated bighead catfish in the Mekong Delta, it is recommended that broodstock in later generations should be produced in a larger...
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| first_indexed | 2024-04-11T04:34:02Z |
| format | Article |
| id | doaj.art-d4c83dda3cd64d2ca911c8c287e30a2a |
| institution | Directory Open Access Journal |
| issn | 2615-9422 2815-5602 |
| language | English |
| last_indexed | 2024-04-11T04:34:02Z |
| publishDate | 2022-11-01 |
| publisher | CAN THO UNIVERSITY PUBLISHING HOUSE |
| record_format | Article |
| series | Can Tho University Journal of Science |
| spelling | doaj.art-d4c83dda3cd64d2ca911c8c287e30a2a2022-12-29T01:09:45ZengCAN THO UNIVERSITY PUBLISHING HOUSECan Tho University Journal of Science2615-94222815-56022022-11-0114310.22144/ctu.jen.2022.038Genetic diversity of two successive generations of selection in bighead catfish (Clarias macrocephalus) populationsThuy Yen Duong0Thi Ngoc Tran NguyenBM.Ky thuat nuoi thuy san nuoc ngot, Khoa Thủy sản Selective programs associated with domestication can improve fish production but also can have an impact on broodstock’s genetic diversity. In this study, the genetic diversity of original sources (G0) from wild and cultured bighead catfish populations, as well as the two successive generations (G1 and G2) subjected to selection experiments, was assessed. G0 wild adults were collected in Ca Mau conservation area and G0 cultured fish were from a hatchery in Can Tho. The G1 fish included pure crosses and crossbreeds of G0, while G2 was the offspring of the selected G1. Fin clips from 27 to 29 individuals of each fish group were randomly sampled for genetic analysis. The amplification results using six ISSR primers showed that the genetic diversity was relatively higher in G0 (effective number of alleles Ne from 1.43 to 1.49; heterozygosity He from 0.265 to 0.290) than in G1 (Ne = 1.32±0.04; He = 0.201±0.023) and G2 (Ne = 1.34±0.04; He = 0.216±0.023). Genetic differences increased between the original populations and the descending generations. To reduce the detrimental impacts of low genetic diversity in domesticated bighead catfish in the Mekong Delta, it is recommended that broodstock in later generations should be produced in a larger... https://ctujs.ctu.edu.vn/index.php/ctujs/article/view/432ClariasdomesticationISSR markersgenetic diversityselection |
| spellingShingle | Thuy Yen Duong Thi Ngoc Tran Nguyen Genetic diversity of two successive generations of selection in bighead catfish (Clarias macrocephalus) populations Can Tho University Journal of Science Clarias domestication ISSR markers genetic diversity selection |
| title | Genetic diversity of two successive generations of selection in bighead catfish (Clarias macrocephalus) populations |
| title_full | Genetic diversity of two successive generations of selection in bighead catfish (Clarias macrocephalus) populations |
| title_fullStr | Genetic diversity of two successive generations of selection in bighead catfish (Clarias macrocephalus) populations |
| title_full_unstemmed | Genetic diversity of two successive generations of selection in bighead catfish (Clarias macrocephalus) populations |
| title_short | Genetic diversity of two successive generations of selection in bighead catfish (Clarias macrocephalus) populations |
| title_sort | genetic diversity of two successive generations of selection in bighead catfish clarias macrocephalus populations |
| topic | Clarias domestication ISSR markers genetic diversity selection |
| url | https://ctujs.ctu.edu.vn/index.php/ctujs/article/view/432 |
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