Cargando…
Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters
BACKGROUND: Understanding the role of seascape in shaping genetic and demographic population structure is highly challenging for marine pelagic species such as cetaceans for which there is generally little evidence of what could effectively restrict their dispersal. In the present work, we applied a...
Autores principales: | , , , , , , , , , , , , , , , , , , |
---|---|
Formato: | Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2007
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1971045/ https://www.ncbi.nlm.nih.gov/pubmed/17651495 http://dx.doi.org/10.1186/1741-7007-5-30 |
_version_ | 1782134856872886272 |
---|---|
author | Fontaine, Michaël C Baird, Stuart JE Piry, Sylvain Ray, Nicolas Tolley, Krystal A Duke, Sarah Birkun, Alexei Ferreira, Marisa Jauniaux, Thierry Llavona, Ángela Öztürk, Bayram A Öztürk, Ayaka Ridoux, Vincent Rogan, Emer Sequeira, Marina Siebert, Ursula Vikingsson, Gísli A Bouquegneau, Jean-Marie Michaux, Johan R |
author_facet | Fontaine, Michaël C Baird, Stuart JE Piry, Sylvain Ray, Nicolas Tolley, Krystal A Duke, Sarah Birkun, Alexei Ferreira, Marisa Jauniaux, Thierry Llavona, Ángela Öztürk, Bayram A Öztürk, Ayaka Ridoux, Vincent Rogan, Emer Sequeira, Marina Siebert, Ursula Vikingsson, Gísli A Bouquegneau, Jean-Marie Michaux, Johan R |
author_sort | Fontaine, Michaël C |
collection | PubMed |
description | BACKGROUND: Understanding the role of seascape in shaping genetic and demographic population structure is highly challenging for marine pelagic species such as cetaceans for which there is generally little evidence of what could effectively restrict their dispersal. In the present work, we applied a combination of recent individual-based landscape genetic approaches to investigate the population genetic structure of a highly mobile extensive range cetacean, the harbour porpoise in the eastern North Atlantic, with regards to oceanographic characteristics that could constrain its dispersal. RESULTS: Analyses of 10 microsatellite loci for 752 individuals revealed that most of the sampled range in the eastern North Atlantic behaves as a 'continuous' population that widely extends over thousands of kilometres with significant isolation by distance (IBD). However, strong barriers to gene flow were detected in the south-eastern part of the range. These barriers coincided with profound changes in environmental characteristics and isolated, on a relatively small scale, porpoises from Iberian waters and on a larger scale porpoises from the Black Sea. CONCLUSION: The presence of these barriers to gene flow that coincide with profound changes in oceanographic features, together with the spatial variation in IBD strength, provide for the first time strong evidence that physical processes have a major impact on the demographic and genetic structure of a cetacean. This genetic pattern further suggests habitat-related fragmentation of the porpoise range that is likely to intensify with predicted surface ocean warming. |
format | Text |
id | pubmed-1971045 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2007 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-19710452007-09-07 Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters Fontaine, Michaël C Baird, Stuart JE Piry, Sylvain Ray, Nicolas Tolley, Krystal A Duke, Sarah Birkun, Alexei Ferreira, Marisa Jauniaux, Thierry Llavona, Ángela Öztürk, Bayram A Öztürk, Ayaka Ridoux, Vincent Rogan, Emer Sequeira, Marina Siebert, Ursula Vikingsson, Gísli A Bouquegneau, Jean-Marie Michaux, Johan R BMC Biol Research Article BACKGROUND: Understanding the role of seascape in shaping genetic and demographic population structure is highly challenging for marine pelagic species such as cetaceans for which there is generally little evidence of what could effectively restrict their dispersal. In the present work, we applied a combination of recent individual-based landscape genetic approaches to investigate the population genetic structure of a highly mobile extensive range cetacean, the harbour porpoise in the eastern North Atlantic, with regards to oceanographic characteristics that could constrain its dispersal. RESULTS: Analyses of 10 microsatellite loci for 752 individuals revealed that most of the sampled range in the eastern North Atlantic behaves as a 'continuous' population that widely extends over thousands of kilometres with significant isolation by distance (IBD). However, strong barriers to gene flow were detected in the south-eastern part of the range. These barriers coincided with profound changes in environmental characteristics and isolated, on a relatively small scale, porpoises from Iberian waters and on a larger scale porpoises from the Black Sea. CONCLUSION: The presence of these barriers to gene flow that coincide with profound changes in oceanographic features, together with the spatial variation in IBD strength, provide for the first time strong evidence that physical processes have a major impact on the demographic and genetic structure of a cetacean. This genetic pattern further suggests habitat-related fragmentation of the porpoise range that is likely to intensify with predicted surface ocean warming. BioMed Central 2007-07-25 /pmc/articles/PMC1971045/ /pubmed/17651495 http://dx.doi.org/10.1186/1741-7007-5-30 Text en Copyright © 2007 Fontaine et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Fontaine, Michaël C Baird, Stuart JE Piry, Sylvain Ray, Nicolas Tolley, Krystal A Duke, Sarah Birkun, Alexei Ferreira, Marisa Jauniaux, Thierry Llavona, Ángela Öztürk, Bayram A Öztürk, Ayaka Ridoux, Vincent Rogan, Emer Sequeira, Marina Siebert, Ursula Vikingsson, Gísli A Bouquegneau, Jean-Marie Michaux, Johan R Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters |
title | Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters |
title_full | Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters |
title_fullStr | Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters |
title_full_unstemmed | Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters |
title_short | Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters |
title_sort | rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in old world waters |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1971045/ https://www.ncbi.nlm.nih.gov/pubmed/17651495 http://dx.doi.org/10.1186/1741-7007-5-30 |
work_keys_str_mv | AT fontainemichaelc riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT bairdstuartje riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT pirysylvain riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT raynicolas riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT tolleykrystala riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT dukesarah riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT birkunalexei riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT ferreiramarisa riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT jauniauxthierry riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT llavonaangela riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT ozturkbayram riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT aozturkayaka riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT ridouxvincent riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT roganemer riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT sequeiramarina riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT siebertursula riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT vikingssongislia riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT bouquegneaujeanmarie riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters AT michauxjohanr riseofoceanographicbarriersincontinuouspopulationsofacetaceanthegeneticstructureofharbourporpoisesinoldworldwaters |