Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic
Despite no obvious barrier to gene flow, historical environmental processes and ecological specializations can lead to genetic differentiation in highly mobile animals. Ecotypes emerged in several large mammal species as a result of niche specializations and/or social organization. In the North-West...
Published in: | Molecular Ecology |
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2014
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Online Access: | http://hdl.handle.net/10379/12505 https://doi.org/10.1111/mec.12653 |
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ftnuigalway:oai:aran.library.nuigalway.ie/:10379/12505 2023-06-11T04:15:07+02:00 Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic Louis, Marie Viricel, Amélia Lucas, Tamara Peltier, Hélène Alfonsi, Eric Berrow, Simon Brownlow, Andrew Covelo, Pablo Dabin, Willy Deaville, Rob de Stephanis, Renaud Gally, François Gauffier, Pauline Penrose, Rod Silva, Monica A. Guinet, Christophe Simon-Bouhet, Benoit 2014-01-29 http://hdl.handle.net/10379/12505 https://doi.org/10.1111/mec.12653 unknown Wiley-Blackwell Molecular Ecology Louis, Marie; Viricel, Amélia; Lucas, Tamara; Peltier, Hélène; Alfonsi, Eric; Berrow, Simon; Brownlow, Andrew; Covelo, Pablo; Dabin, Willy; Deaville, Rob; de Stephanis, Renaud; Gally, François; Gauffier, Pauline; Penrose, Rod; Silva, Monica A. Guinet, Christophe; Simon-Bouhet, Benoit (2014). Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic. Molecular Ecology 23 (4), 857-874 0962-1083 http://hdl.handle.net/10379/12505 doi:10.1111/mec.12653 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ cetaceans conservation ecotypes feeding specializations philopatry population genetics genetic-markers linkage disequilibrium mitochondrial-DNA spatial-distribution natural-populations local adaptation mating systems size differentiation program Article 2014 ftnuigalway https://doi.org/10.1111/mec.12653 2023-05-28T18:05:35Z Despite no obvious barrier to gene flow, historical environmental processes and ecological specializations can lead to genetic differentiation in highly mobile animals. Ecotypes emerged in several large mammal species as a result of niche specializations and/or social organization. In the North-West Atlantic, two distinct bottlenose dolphin (Tursiops truncatus) ecotypes (i.e. coastal' and pelagic') have been identified. Here, we investigated the genetic population structure of North-East Atlantic (NEA) bottlenose dolphins on a large scale through the analysis of 381 biopsy-sampled or stranded animals using 25 microsatellites and a 682-bp portion of the mitochondrial control region. We shed light on the likely origin of stranded animals using a carcass drift prediction model. We showed, for the first time, that coastal and pelagic bottlenose dolphins were highly differentiated in the NEA. Finer-scale population structure was found within the two groups. We suggest that distinct founding events followed by parallel adaptation may have occurred independently from a large Atlantic pelagic population in the two sides of the basin. Divergence could be maintained by philopatry possibly as a result of foraging specializations and social organization. As coastal environments are under increasing anthropogenic pressures, small and isolated populations might be at risk and require appropriate conservation policies to preserve their habitats. While genetics can be a powerful first step to delineate ecotypes in protected and difficult to access taxa, ecotype distinction should be further documented through diet studies and the examination of cranial skull features associated with feeding. Article in Journal/Newspaper North East Atlantic North West Atlantic National University of Ireland (NUI), Galway: ARAN Molecular Ecology 23 4 857 874 |
institution |
Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
op_collection_id |
ftnuigalway |
language |
unknown |
topic |
cetaceans conservation ecotypes feeding specializations philopatry population genetics genetic-markers linkage disequilibrium mitochondrial-DNA spatial-distribution natural-populations local adaptation mating systems size differentiation program |
spellingShingle |
cetaceans conservation ecotypes feeding specializations philopatry population genetics genetic-markers linkage disequilibrium mitochondrial-DNA spatial-distribution natural-populations local adaptation mating systems size differentiation program Louis, Marie Viricel, Amélia Lucas, Tamara Peltier, Hélène Alfonsi, Eric Berrow, Simon Brownlow, Andrew Covelo, Pablo Dabin, Willy Deaville, Rob de Stephanis, Renaud Gally, François Gauffier, Pauline Penrose, Rod Silva, Monica A. Guinet, Christophe Simon-Bouhet, Benoit Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic |
topic_facet |
cetaceans conservation ecotypes feeding specializations philopatry population genetics genetic-markers linkage disequilibrium mitochondrial-DNA spatial-distribution natural-populations local adaptation mating systems size differentiation program |
description |
Despite no obvious barrier to gene flow, historical environmental processes and ecological specializations can lead to genetic differentiation in highly mobile animals. Ecotypes emerged in several large mammal species as a result of niche specializations and/or social organization. In the North-West Atlantic, two distinct bottlenose dolphin (Tursiops truncatus) ecotypes (i.e. coastal' and pelagic') have been identified. Here, we investigated the genetic population structure of North-East Atlantic (NEA) bottlenose dolphins on a large scale through the analysis of 381 biopsy-sampled or stranded animals using 25 microsatellites and a 682-bp portion of the mitochondrial control region. We shed light on the likely origin of stranded animals using a carcass drift prediction model. We showed, for the first time, that coastal and pelagic bottlenose dolphins were highly differentiated in the NEA. Finer-scale population structure was found within the two groups. We suggest that distinct founding events followed by parallel adaptation may have occurred independently from a large Atlantic pelagic population in the two sides of the basin. Divergence could be maintained by philopatry possibly as a result of foraging specializations and social organization. As coastal environments are under increasing anthropogenic pressures, small and isolated populations might be at risk and require appropriate conservation policies to preserve their habitats. While genetics can be a powerful first step to delineate ecotypes in protected and difficult to access taxa, ecotype distinction should be further documented through diet studies and the examination of cranial skull features associated with feeding. |
format |
Article in Journal/Newspaper |
author |
Louis, Marie Viricel, Amélia Lucas, Tamara Peltier, Hélène Alfonsi, Eric Berrow, Simon Brownlow, Andrew Covelo, Pablo Dabin, Willy Deaville, Rob de Stephanis, Renaud Gally, François Gauffier, Pauline Penrose, Rod Silva, Monica A. Guinet, Christophe Simon-Bouhet, Benoit |
author_facet |
Louis, Marie Viricel, Amélia Lucas, Tamara Peltier, Hélène Alfonsi, Eric Berrow, Simon Brownlow, Andrew Covelo, Pablo Dabin, Willy Deaville, Rob de Stephanis, Renaud Gally, François Gauffier, Pauline Penrose, Rod Silva, Monica A. Guinet, Christophe Simon-Bouhet, Benoit |
author_sort |
Louis, Marie |
title |
Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic |
title_short |
Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic |
title_full |
Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic |
title_fullStr |
Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic |
title_full_unstemmed |
Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic |
title_sort |
habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic |
publisher |
Wiley-Blackwell |
publishDate |
2014 |
url |
http://hdl.handle.net/10379/12505 https://doi.org/10.1111/mec.12653 |
genre |
North East Atlantic North West Atlantic |
genre_facet |
North East Atlantic North West Atlantic |
op_relation |
Molecular Ecology Louis, Marie; Viricel, Amélia; Lucas, Tamara; Peltier, Hélène; Alfonsi, Eric; Berrow, Simon; Brownlow, Andrew; Covelo, Pablo; Dabin, Willy; Deaville, Rob; de Stephanis, Renaud; Gally, François; Gauffier, Pauline; Penrose, Rod; Silva, Monica A. Guinet, Christophe; Simon-Bouhet, Benoit (2014). Habitat-driven population structure of bottlenose dolphins,tursiops truncatus, in the north-east atlantic. Molecular Ecology 23 (4), 857-874 0962-1083 http://hdl.handle.net/10379/12505 doi:10.1111/mec.12653 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.1111/mec.12653 |
container_title |
Molecular Ecology |
container_volume |
23 |
container_issue |
4 |
container_start_page |
857 |
op_container_end_page |
874 |
_version_ |
1768371703731191808 |