Recent Demographic History and Present Fine-Scale Structure in the Northwest Atlantic Leatherback (Dermochelys coriacea) Turtle Population.
International audience The leatherback turtle Dermochelys coriacea is the most widely distributed sea turtle species in the world. It exhibits complex life traits: female homing and migration, migrations of juveniles and males that remain poorly known, and a strong climatic influence on resources, b...
Published in: | PLoS ONE |
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Main Authors: | , , , , , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Online Access: | https://hal.science/hal-00805170 https://hal.science/hal-00805170/document https://hal.science/hal-00805170/file/Molfetti_plosone_2013.pdf https://doi.org/10.1371/journal.pone.0058061 |
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Réseau International des Instituts Pasteur, Paris: HAL-RIIP |
op_collection_id |
ftriip |
language |
English |
topic |
[SDE]Environmental Sciences [SDV.EE]Life Sciences [q-bio]/Ecology environment |
spellingShingle |
[SDE]Environmental Sciences [SDV.EE]Life Sciences [q-bio]/Ecology environment Molfetti, Erica Torres Vilaça, Sibelle Georges, Jean-Yves Plot, Virginie Delcroix, Eric Le Scao, Rozen Lavergne, Anne Barrioz, Sébastien dos Santos, Fabrício Rodrigues de Thoisy, Benoît Recent Demographic History and Present Fine-Scale Structure in the Northwest Atlantic Leatherback (Dermochelys coriacea) Turtle Population. |
topic_facet |
[SDE]Environmental Sciences [SDV.EE]Life Sciences [q-bio]/Ecology environment |
description |
International audience The leatherback turtle Dermochelys coriacea is the most widely distributed sea turtle species in the world. It exhibits complex life traits: female homing and migration, migrations of juveniles and males that remain poorly known, and a strong climatic influence on resources, breeding success and sex-ratio. It is consequently challenging to understand population dynamics. Leatherbacks are critically endangered, yet the group from the Northwest Atlantic is currently considered to be under lower risk than other populations while hosting some of the largest rookeries. Here, we investigated the genetic diversity and the demographic history of contrasted rookeries from this group, namely two large nesting populations in French Guiana, and a smaller one in the French West Indies. We used 10 microsatellite loci, of which four are newly isolated, and mitochondrial DNA sequences of the control region and cytochrome b. Both mitochondrial and nuclear markers revealed that the Northwest Atlantic stock of leatherbacks derives from a single ancestral origin, but show current genetic structuration at the scale of nesting sites, with the maintenance of migrants amongst rookeries. Low nuclear genetic diversities are related to founder effects that followed consequent bottlenecks during the late Pleistocene/Holocene. Most probably in response to climatic oscillations, with a possible influence of early human hunting, female effective population sizes collapsed from 2 million to 200. Evidence of founder effects and high numbers of migrants make it possible to reconsider the population dynamics of the species, formerly considered as a metapopulation model: we propose a more relaxed island model, which we expect to be a key element in the currently observed recovering of populations. Although these Northwest Atlantic rookeries should be considered as a single evolutionary unit, we stress that local conservation efforts remain necessary since each nesting site hosts part of the genetic diversity and species ... |
author2 |
Instituto de Ciencias Biologicas Minas Gerais (ICB) Universidade Federal de Minas Gerais = Federal University of Minas Gerais Belo Horizonte, Brazil (UFMG) Dipartimento di Biologia ed Evoluzione Università degli Studi di Ferrara = University of Ferrara (UniFE) Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Institut Pasteur de la Guyane Réseau International des Instituts Pasteur (RIIP) Office National de la Chasse et de la Faune Sauvage ONCFS |
format |
Article in Journal/Newspaper |
author |
Molfetti, Erica Torres Vilaça, Sibelle Georges, Jean-Yves Plot, Virginie Delcroix, Eric Le Scao, Rozen Lavergne, Anne Barrioz, Sébastien dos Santos, Fabrício Rodrigues de Thoisy, Benoît |
author_facet |
Molfetti, Erica Torres Vilaça, Sibelle Georges, Jean-Yves Plot, Virginie Delcroix, Eric Le Scao, Rozen Lavergne, Anne Barrioz, Sébastien dos Santos, Fabrício Rodrigues de Thoisy, Benoît |
author_sort |
Molfetti, Erica |
title |
Recent Demographic History and Present Fine-Scale Structure in the Northwest Atlantic Leatherback (Dermochelys coriacea) Turtle Population. |
title_short |
Recent Demographic History and Present Fine-Scale Structure in the Northwest Atlantic Leatherback (Dermochelys coriacea) Turtle Population. |
title_full |
Recent Demographic History and Present Fine-Scale Structure in the Northwest Atlantic Leatherback (Dermochelys coriacea) Turtle Population. |
title_fullStr |
Recent Demographic History and Present Fine-Scale Structure in the Northwest Atlantic Leatherback (Dermochelys coriacea) Turtle Population. |
title_full_unstemmed |
Recent Demographic History and Present Fine-Scale Structure in the Northwest Atlantic Leatherback (Dermochelys coriacea) Turtle Population. |
title_sort |
recent demographic history and present fine-scale structure in the northwest atlantic leatherback (dermochelys coriacea) turtle population. |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-00805170 https://hal.science/hal-00805170/document https://hal.science/hal-00805170/file/Molfetti_plosone_2013.pdf https://doi.org/10.1371/journal.pone.0058061 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-00805170 PLoS ONE, 2013, 8 (3), pp.e58061. ⟨10.1371/journal.pone.0058061⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0058061 info:eu-repo/semantics/altIdentifier/pmid/23516429 hal-00805170 https://hal.science/hal-00805170 https://hal.science/hal-00805170/document https://hal.science/hal-00805170/file/Molfetti_plosone_2013.pdf doi:10.1371/journal.pone.0058061 PUBMED: 23516429 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0058061 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
3 |
container_start_page |
e58061 |
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1796315470159151104 |
spelling |
ftriip:oai:HAL:hal-00805170v1 2024-04-14T08:16:44+00:00 Recent Demographic History and Present Fine-Scale Structure in the Northwest Atlantic Leatherback (Dermochelys coriacea) Turtle Population. Molfetti, Erica Torres Vilaça, Sibelle Georges, Jean-Yves Plot, Virginie Delcroix, Eric Le Scao, Rozen Lavergne, Anne Barrioz, Sébastien dos Santos, Fabrício Rodrigues de Thoisy, Benoît Instituto de Ciencias Biologicas Minas Gerais (ICB) Universidade Federal de Minas Gerais = Federal University of Minas Gerais Belo Horizonte, Brazil (UFMG) Dipartimento di Biologia ed Evoluzione Università degli Studi di Ferrara = University of Ferrara (UniFE) Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Institut Pasteur de la Guyane Réseau International des Instituts Pasteur (RIIP) Office National de la Chasse et de la Faune Sauvage ONCFS 2013 https://hal.science/hal-00805170 https://hal.science/hal-00805170/document https://hal.science/hal-00805170/file/Molfetti_plosone_2013.pdf https://doi.org/10.1371/journal.pone.0058061 en eng HAL CCSD Public Library of Science info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0058061 info:eu-repo/semantics/altIdentifier/pmid/23516429 hal-00805170 https://hal.science/hal-00805170 https://hal.science/hal-00805170/document https://hal.science/hal-00805170/file/Molfetti_plosone_2013.pdf doi:10.1371/journal.pone.0058061 PUBMED: 23516429 info:eu-repo/semantics/OpenAccess ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-00805170 PLoS ONE, 2013, 8 (3), pp.e58061. ⟨10.1371/journal.pone.0058061⟩ [SDE]Environmental Sciences [SDV.EE]Life Sciences [q-bio]/Ecology environment info:eu-repo/semantics/article Journal articles 2013 ftriip https://doi.org/10.1371/journal.pone.0058061 2024-03-21T16:53:27Z International audience The leatherback turtle Dermochelys coriacea is the most widely distributed sea turtle species in the world. It exhibits complex life traits: female homing and migration, migrations of juveniles and males that remain poorly known, and a strong climatic influence on resources, breeding success and sex-ratio. It is consequently challenging to understand population dynamics. Leatherbacks are critically endangered, yet the group from the Northwest Atlantic is currently considered to be under lower risk than other populations while hosting some of the largest rookeries. Here, we investigated the genetic diversity and the demographic history of contrasted rookeries from this group, namely two large nesting populations in French Guiana, and a smaller one in the French West Indies. We used 10 microsatellite loci, of which four are newly isolated, and mitochondrial DNA sequences of the control region and cytochrome b. Both mitochondrial and nuclear markers revealed that the Northwest Atlantic stock of leatherbacks derives from a single ancestral origin, but show current genetic structuration at the scale of nesting sites, with the maintenance of migrants amongst rookeries. Low nuclear genetic diversities are related to founder effects that followed consequent bottlenecks during the late Pleistocene/Holocene. Most probably in response to climatic oscillations, with a possible influence of early human hunting, female effective population sizes collapsed from 2 million to 200. Evidence of founder effects and high numbers of migrants make it possible to reconsider the population dynamics of the species, formerly considered as a metapopulation model: we propose a more relaxed island model, which we expect to be a key element in the currently observed recovering of populations. Although these Northwest Atlantic rookeries should be considered as a single evolutionary unit, we stress that local conservation efforts remain necessary since each nesting site hosts part of the genetic diversity and species ... Article in Journal/Newspaper Northwest Atlantic Réseau International des Instituts Pasteur, Paris: HAL-RIIP PLoS ONE 8 3 e58061 |