Molecular insight into the population structure of common and spotted dolphins inhabiting the pelagic waters of the Northeast Atlantic
Several cetacean species exhibit fine-scale population structure despite their high dispersal capacities and the apparent continuity of the marine environment. In dolphins, most studies have focused on coastal areas and continental margins, and they revealed differentiated populations within relativ...
Published in: | Marine Biology |
---|---|
Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2010
|
Subjects: | |
Online Access: | https://hal.ird.fr/ird-00544302 https://hal.ird.fr/ird-00544302/document https://hal.ird.fr/ird-00544302/file/Querouil-al-MB-2b.pdf https://doi.org/10.1007/s00227-010-1519-0 |
id |
ftccsdartic:oai:HAL:ird-00544302v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:ird-00544302v1 2023-05-15T17:35:33+02:00 Molecular insight into the population structure of common and spotted dolphins inhabiting the pelagic waters of the Northeast Atlantic Quérouil, Sophie Freitas, L. Cascao, I. Alves, F. Dinis, A. Almeida, J. R. Prieto, R. Borras, S. Matos, J. A. Mendonca, D. Santos, R. S. Caractérisation et valorisation de la diversité ichtyologique pour une aquaculture raisonnée (CAVIAR) Instituto do Mar & Department of Oceanography and Fisheries - University of the Azores (IMAR-DOP) IMAR Departamento de Biotecnologia Instituto Nacional de Engenharia, Tecnologia e Inovacao (INETI) Museau de Baleia da Madeira museu da Baleia Instituto Nacional de Recursos Biológicos (INRB) Institut National de la Recherche Agronomique (INRA) 2010 https://hal.ird.fr/ird-00544302 https://hal.ird.fr/ird-00544302/document https://hal.ird.fr/ird-00544302/file/Querouil-al-MB-2b.pdf https://doi.org/10.1007/s00227-010-1519-0 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-010-1519-0 ird-00544302 https://hal.ird.fr/ird-00544302 https://hal.ird.fr/ird-00544302/document https://hal.ird.fr/ird-00544302/file/Querouil-al-MB-2b.pdf doi:10.1007/s00227-010-1519-0 IRD: fdi:010052893 PRODINRA: 246910 WOS: 000282828900020 info:eu-repo/semantics/OpenAccess ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.ird.fr/ird-00544302 Marine Biology, Springer Verlag, 2010, 157 (11), pp.2567-2580. ⟨10.1007/s00227-010-1519-0⟩ [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] info:eu-repo/semantics/article Journal articles 2010 ftccsdartic https://doi.org/10.1007/s00227-010-1519-0 2021-12-05T03:46:05Z Several cetacean species exhibit fine-scale population structure despite their high dispersal capacities and the apparent continuity of the marine environment. In dolphins, most studies have focused on coastal areas and continental margins, and they revealed differentiated populations within relatively small geographic areas, sometimes in conjunction with a specialisation for different habitats (ecotypes). We analysed the population genetic structure of short-beaked common dolphins (Delphinus delphis) and Atlantic spotted dolphins (Stenella frontalis) in the Azores and Madeira, the two most isolated archipelagos of the North Atlantic. The archipelago of the Azores is divided into three groups of islands and stands 900 km away from Madeira. It is not known whether individuals migrate between groups of islands and archipelagos, nor whether distinct ecotypes are present. These questions were investigated by genetic analyses of 343 biopsy samples collected on free-ranging dolphins. The analyses consisted in sequencing part of the mitochondrial hyper-variable region, screening up to 14 microsatellite loci, and molecular sexing. Results did not unravel any population structure at the scale of the study area. Lack of differentiation matches expectations for spotted dolphins, which are transient in both archipelagos, but not for common dolphins, which are present year-round in the Azores and potentially resident. Absence of genetic structure over hundreds and even thousands of kilometres implies the existence of gene flow over much larger distances than usually documented in small delphinids, which could be achieved through individual movements. This finding indicates that population structure in oceanic habitat differs from that observed in coastal habitat. Article in Journal/Newspaper North Atlantic Northeast Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Marine Biology 157 11 2567 2580 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
spellingShingle |
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] Quérouil, Sophie Freitas, L. Cascao, I. Alves, F. Dinis, A. Almeida, J. R. Prieto, R. Borras, S. Matos, J. A. Mendonca, D. Santos, R. S. Molecular insight into the population structure of common and spotted dolphins inhabiting the pelagic waters of the Northeast Atlantic |
topic_facet |
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
description |
Several cetacean species exhibit fine-scale population structure despite their high dispersal capacities and the apparent continuity of the marine environment. In dolphins, most studies have focused on coastal areas and continental margins, and they revealed differentiated populations within relatively small geographic areas, sometimes in conjunction with a specialisation for different habitats (ecotypes). We analysed the population genetic structure of short-beaked common dolphins (Delphinus delphis) and Atlantic spotted dolphins (Stenella frontalis) in the Azores and Madeira, the two most isolated archipelagos of the North Atlantic. The archipelago of the Azores is divided into three groups of islands and stands 900 km away from Madeira. It is not known whether individuals migrate between groups of islands and archipelagos, nor whether distinct ecotypes are present. These questions were investigated by genetic analyses of 343 biopsy samples collected on free-ranging dolphins. The analyses consisted in sequencing part of the mitochondrial hyper-variable region, screening up to 14 microsatellite loci, and molecular sexing. Results did not unravel any population structure at the scale of the study area. Lack of differentiation matches expectations for spotted dolphins, which are transient in both archipelagos, but not for common dolphins, which are present year-round in the Azores and potentially resident. Absence of genetic structure over hundreds and even thousands of kilometres implies the existence of gene flow over much larger distances than usually documented in small delphinids, which could be achieved through individual movements. This finding indicates that population structure in oceanic habitat differs from that observed in coastal habitat. |
author2 |
Caractérisation et valorisation de la diversité ichtyologique pour une aquaculture raisonnée (CAVIAR) Instituto do Mar & Department of Oceanography and Fisheries - University of the Azores (IMAR-DOP) IMAR Departamento de Biotecnologia Instituto Nacional de Engenharia, Tecnologia e Inovacao (INETI) Museau de Baleia da Madeira museu da Baleia Instituto Nacional de Recursos Biológicos (INRB) Institut National de la Recherche Agronomique (INRA) |
format |
Article in Journal/Newspaper |
author |
Quérouil, Sophie Freitas, L. Cascao, I. Alves, F. Dinis, A. Almeida, J. R. Prieto, R. Borras, S. Matos, J. A. Mendonca, D. Santos, R. S. |
author_facet |
Quérouil, Sophie Freitas, L. Cascao, I. Alves, F. Dinis, A. Almeida, J. R. Prieto, R. Borras, S. Matos, J. A. Mendonca, D. Santos, R. S. |
author_sort |
Quérouil, Sophie |
title |
Molecular insight into the population structure of common and spotted dolphins inhabiting the pelagic waters of the Northeast Atlantic |
title_short |
Molecular insight into the population structure of common and spotted dolphins inhabiting the pelagic waters of the Northeast Atlantic |
title_full |
Molecular insight into the population structure of common and spotted dolphins inhabiting the pelagic waters of the Northeast Atlantic |
title_fullStr |
Molecular insight into the population structure of common and spotted dolphins inhabiting the pelagic waters of the Northeast Atlantic |
title_full_unstemmed |
Molecular insight into the population structure of common and spotted dolphins inhabiting the pelagic waters of the Northeast Atlantic |
title_sort |
molecular insight into the population structure of common and spotted dolphins inhabiting the pelagic waters of the northeast atlantic |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.ird.fr/ird-00544302 https://hal.ird.fr/ird-00544302/document https://hal.ird.fr/ird-00544302/file/Querouil-al-MB-2b.pdf https://doi.org/10.1007/s00227-010-1519-0 |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.ird.fr/ird-00544302 Marine Biology, Springer Verlag, 2010, 157 (11), pp.2567-2580. ⟨10.1007/s00227-010-1519-0⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-010-1519-0 ird-00544302 https://hal.ird.fr/ird-00544302 https://hal.ird.fr/ird-00544302/document https://hal.ird.fr/ird-00544302/file/Querouil-al-MB-2b.pdf doi:10.1007/s00227-010-1519-0 IRD: fdi:010052893 PRODINRA: 246910 WOS: 000282828900020 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1007/s00227-010-1519-0 |
container_title |
Marine Biology |
container_volume |
157 |
container_issue |
11 |
container_start_page |
2567 |
op_container_end_page |
2580 |
_version_ |
1766134749367107584 |