Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streams

Brown trout is a cold-adapted freshwater species with restricted distribution to headwater streams in rivers of the South European peninsulas, where populations are highly vulnerable because Mediterranean regions are highly sensitive to the global climatic warming. Moreover, these populations are en...

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Autores: Vera Rodríguez, Manuel, García Marín, José Luis, Martínez, Paulino, Araguas Solà, Rosa M., Bouza da Costa, Carmen
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2013
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/9743
Acceso en línea:http://hdl.handle.net/10256/9743
Access Level:acceso abierto
Palabra clave:Canvi mediambiental global
Global environmental change
Genètica de poblacions
Population genetics
Truites (Peixos) -- Aspectes genètics
Trout -- Genetic aspects
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spelling Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streamsVera Rodríguez, ManuelGarcía Marín, José LuisMartínez, PaulinoAraguas Solà, Rosa M.Bouza da Costa, CarmenCanvi mediambiental globalGlobal environmental changeGenètica de poblacionsPopulation geneticsTruites (Peixos) -- Aspectes genèticsTrout -- Genetic aspectsBrown trout is a cold-adapted freshwater species with restricted distribution to headwater streams in rivers of the South European peninsulas, where populations are highly vulnerable because Mediterranean regions are highly sensitive to the global climatic warming. Moreover, these populations are endangered due to the introgressive hybridization with cultured stocks. Individuals from six remnant populations in Western Mediterranean rivers were sequenced for the complete mitochondrial DNA control region and genotyped for 11 nuclear markers. Three different brown trout lineages were present in the studied region. Significant genetic divergence was observed among locations and a strong effect of genetic drift was suggested. An important stocking impact (close to 25%) was detected in the zone. Significant correlations between mitochondrial-based rates of hatchery introgression and water flow variation suggested a higher impact of stocked females in unstable habitats. In spite of hatchery introgression, all populations remained highly differentiated, suggesting that native genetic resources are still abundant. However, climatic predictions indicated that suitable habitats for the species in these rivers will be reduced and hence trout populations are highly endangered and vulnerable. Thus, management policies should take into account these predictions to design upstream refuge areas to protect remnant native trout in the regionSpringer Science; Business Media Dordrecht2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10256/9743http://hdl.handle.net/10256/9743© Hydrobiologia, 2013, vol. 707, p. 29-45Articles publicats (D-B)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10750-012-1402-8info:eu-repo/semantics/altIdentifier/issn/0018-8158info:eu-repo/semantics/altIdentifier/eissn/1573-5117Tots els drets reservatsinfo:eu-repo/semantics/openAccessoai:recercat.cat:10256/97432026-05-29T05:05:01Z
dc.title.none.fl_str_mv Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streams
title Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streams
spellingShingle Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streams
Vera Rodríguez, Manuel
Canvi mediambiental global
Global environmental change
Genètica de poblacions
Population genetics
Truites (Peixos) -- Aspectes genètics
Trout -- Genetic aspects
title_short Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streams
title_full Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streams
title_fullStr Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streams
title_full_unstemmed Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streams
title_sort Identification and conservation of remnant genetic resources of brown trout in relict populations from Western Mediterranean streams
dc.creator.none.fl_str_mv Vera Rodríguez, Manuel
García Marín, José Luis
Martínez, Paulino
Araguas Solà, Rosa M.
Bouza da Costa, Carmen
author Vera Rodríguez, Manuel
author_facet Vera Rodríguez, Manuel
García Marín, José Luis
Martínez, Paulino
Araguas Solà, Rosa M.
Bouza da Costa, Carmen
author_role author
author2 García Marín, José Luis
Martínez, Paulino
Araguas Solà, Rosa M.
Bouza da Costa, Carmen
author2_role author
author
author
author
dc.subject.none.fl_str_mv Canvi mediambiental global
Global environmental change
Genètica de poblacions
Population genetics
Truites (Peixos) -- Aspectes genètics
Trout -- Genetic aspects
topic Canvi mediambiental global
Global environmental change
Genètica de poblacions
Population genetics
Truites (Peixos) -- Aspectes genètics
Trout -- Genetic aspects
description Brown trout is a cold-adapted freshwater species with restricted distribution to headwater streams in rivers of the South European peninsulas, where populations are highly vulnerable because Mediterranean regions are highly sensitive to the global climatic warming. Moreover, these populations are endangered due to the introgressive hybridization with cultured stocks. Individuals from six remnant populations in Western Mediterranean rivers were sequenced for the complete mitochondrial DNA control region and genotyped for 11 nuclear markers. Three different brown trout lineages were present in the studied region. Significant genetic divergence was observed among locations and a strong effect of genetic drift was suggested. An important stocking impact (close to 25%) was detected in the zone. Significant correlations between mitochondrial-based rates of hatchery introgression and water flow variation suggested a higher impact of stocked females in unstable habitats. In spite of hatchery introgression, all populations remained highly differentiated, suggesting that native genetic resources are still abundant. However, climatic predictions indicated that suitable habitats for the species in these rivers will be reduced and hence trout populations are highly endangered and vulnerable. Thus, management policies should take into account these predictions to design upstream refuge areas to protect remnant native trout in the region
publishDate 2013
dc.date.none.fl_str_mv 2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/9743
http://hdl.handle.net/10256/9743
url http://hdl.handle.net/10256/9743
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s10750-012-1402-8
info:eu-repo/semantics/altIdentifier/issn/0018-8158
info:eu-repo/semantics/altIdentifier/eissn/1573-5117
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Science; Business Media Dordrecht
publisher.none.fl_str_mv Springer Science; Business Media Dordrecht
dc.source.none.fl_str_mv © Hydrobiologia, 2013, vol. 707, p. 29-45
Articles publicats (D-B)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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