RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Genetics and Molecular Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100004 |
Resumo: | 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. |
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Genetics and Molecular Biology |
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RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish speciesProchilodusRAPDgenetic structureconservation geneticfishMany 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.Sociedade Brasileira de Genética2003-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100004Genetics and Molecular Biology v.26 n.1 2003reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572003000100004info:eu-repo/semantics/openAccessHatanaka,TerumiGaletti Jr.,Pedro Manoeleng2003-09-05T00:00:00Zoai:scielo:S1415-47572003000100004Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2003-09-05T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false |
dc.title.none.fl_str_mv |
RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species |
title |
RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species |
spellingShingle |
RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species Hatanaka,Terumi Prochilodus RAPD genetic structure conservation genetic fish |
title_short |
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_sort |
RAPD markers indicate the occurrence of structured populations in a migratory freshwater fish species |
author |
Hatanaka,Terumi |
author_facet |
Hatanaka,Terumi Galetti Jr.,Pedro Manoel |
author_role |
author |
author2 |
Galetti Jr.,Pedro Manoel |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Hatanaka,Terumi Galetti Jr.,Pedro Manoel |
dc.subject.por.fl_str_mv |
Prochilodus RAPD genetic structure conservation genetic fish |
topic |
Prochilodus RAPD genetic structure conservation genetic fish |
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. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1415-47572003000100004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
dc.source.none.fl_str_mv |
Genetics and Molecular Biology v.26 n.1 2003 reponame:Genetics and Molecular Biology instname:Sociedade Brasileira de Genética (SBG) instacron:SBG |
instname_str |
Sociedade Brasileira de Genética (SBG) |
instacron_str |
SBG |
institution |
SBG |
reponame_str |
Genetics and Molecular Biology |
collection |
Genetics and Molecular Biology |
repository.name.fl_str_mv |
Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG) |
repository.mail.fl_str_mv |
||editor@gmb.org.br |
_version_ |
1752122378579607552 |