RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species
Many factors have contributed to the destruction of fish habitats. Hydroelectric dams, water pollution and other environmental changes have resulted in the eradication of natural stocks. The aim of this study was to detect the genetic variation in Prochilodus marggravii from three collection sites i...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Genética
2003-01-01
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| Series: | Genetics and Molecular Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100004 |
| _version_ | 1818510371853434880 |
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| author | Hatanaka Terumi Galetti Jr. Pedro Manoel |
| author_facet | Hatanaka Terumi Galetti Jr. Pedro Manoel |
| author_sort | Hatanaka Terumi |
| collection | DOAJ |
| description | Many factors have contributed to the destruction of fish habitats. Hydroelectric dams, water pollution and other environmental changes have resulted in the eradication of natural stocks. The aim of this study was to detect the genetic variation in Prochilodus marggravii from three collection sites in the area of influence of the Três Marias dam (MG) on the São Francisco river (Brazil), using the RAPD technique. The results obtained revealed that the fish in the downstream region nearest the dam have a higher similarity coefficient than those from the other sampling sites that may be related to differences in environmental characteristics in these regions. Additionaly, significant differences in the band frequencies were observed from one collection site to another. These both findings suggest the occurrence of a structured population and have important implications for the conservation of the genetic variability of distinct natural P. marggravii stocks. |
| first_indexed | 2024-12-10T22:58:20Z |
| format | Article |
| id | doaj.art-384092961a74481690f5ea92e1342bff |
| institution | Directory Open Access Journal |
| issn | 1415-4757 1678-4685 |
| language | English |
| last_indexed | 2024-12-10T22:58:20Z |
| publishDate | 2003-01-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-384092961a74481690f5ea92e1342bff2022-12-22T01:30:13ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1415-47571678-46852003-01-012611925RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish speciesHatanaka TerumiGaletti Jr. Pedro ManoelMany factors have contributed to the destruction of fish habitats. Hydroelectric dams, water pollution and other environmental changes have resulted in the eradication of natural stocks. The aim of this study was to detect the genetic variation in Prochilodus marggravii from three collection sites in the area of influence of the Três Marias dam (MG) on the São Francisco river (Brazil), using the RAPD technique. The results obtained revealed that the fish in the downstream region nearest the dam have a higher similarity coefficient than those from the other sampling sites that may be related to differences in environmental characteristics in these regions. Additionaly, significant differences in the band frequencies were observed from one collection site to another. These both findings suggest the occurrence of a structured population and have important implications for the conservation of the genetic variability of distinct natural P. marggravii stocks.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100004ProchilodusRAPDgenetic structureconservation geneticfish |
| spellingShingle | Hatanaka Terumi Galetti Jr. Pedro Manoel RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species Genetics and Molecular Biology Prochilodus RAPD genetic structure conservation genetic fish |
| title | RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species |
| title_full | RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species |
| title_fullStr | RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species |
| title_full_unstemmed | RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species |
| title_short | RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species |
| title_sort | rapd markers indicate the occurrence of structured populations in a migratory freshwater fish species |
| topic | Prochilodus RAPD genetic structure conservation genetic fish |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100004 |
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