Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters
Aim: We investigated the population genetic structure of a highly mobile marine species, the striped dolphin, Stenella coeruleoalba (Meyen, 1833), along a geographical range with habitat transitions and historical dynamics to identify the causes of genetic divergence, and to assess the effect of pas...
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ftunivthessaly:oai:ir.lib.uth.gr:11615/72427 2023-05-15T17:29:15+02:00 Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters Gkafas G.A., Exadactylos A., Rogan E., Raga J.A., Reid R., Hoelzel A.R. 2017 http://hdl.handle.net/11615/72427 https://doi.org/10.1111/jbi.13079 en eng doi:10.1111/jbi.13079 03050270 http://hdl.handle.net/11615/72427 Journal of Biogeography https://www.scopus.com/inward/record.uri?eid=2-s2.0-85035051454&doi=10.1111%2fjbi.13079&partnerID=40&md5=8c952aab466eb7fb28aee72dfac748ef climate variation demographic history divergence dolphin gene flow genetic structure Holocene Pleistocene population structure Atlantic Ocean Atlantic Ocean (North) Mediterranean Sea Stenella (Cetacea) Stenella coeruleoalba Blackwell Publishing Ltd journalArticle 2017 ftunivthessaly https://doi.org/10.1111/jbi.13079 2023-02-02T17:34:20Z Aim: We investigated the population genetic structure of a highly mobile marine species, the striped dolphin, Stenella coeruleoalba (Meyen, 1833), along a geographical range with habitat transitions and historical dynamics to identify the causes of genetic divergence, and to assess the effect of past climate change on demography and population connectivity. Location: North-east Atlantic Ocean and Mediterranean Sea. Methods: Twenty microsatellite loci were used in conjunction with coalescent methods to investigate the genetic structure and demographic history of striped dolphins (Stenella coeruleoalba) in the Mediterranean Sea and eastern North Atlantic Ocean. Approximate Bayesian modelling was used to compare the support for alternative scenarios for the pattern of divergence over time in the context of known geographical transitions and environmental change over the course of the Quaternary. Results: We describe a novel pattern of structure among the extant populations along north–south and east–west axes. Modern gene flow shows strong directionality from north-east to south and west in the North Atlantic, and from west to east in the Mediterranean. On a temporal scale we found evidence for a progression starting with a division between the North Atlantic and Mediterranean Sea populations during the middle Pleistocene, followed by a division within the Mediterranean between the east and west basins towards the end of the Pleistocene, and finally an east–west division in the eastern North Atlantic at the start of the Holocene. Main conclusions: In the context of known population structure for other marine species along the same geographical range, our data facilitate inference of the more general processes that shaped patterns of biogeography across this region through the environmental transitions of the Quaternary. In particular, Pleistocene era divisions apparently reflect strong physical habitat boundaries, with later divisions associated with climate warming in the Holocene. © 2017 John Wiley & Sons Ltd Article in Journal/Newspaper North Atlantic North East Atlantic University of Thessaly Institutional Repository Journal of Biogeography 44 12 2681 2691 |
institution |
Open Polar |
collection |
University of Thessaly Institutional Repository |
op_collection_id |
ftunivthessaly |
language |
English |
topic |
climate variation demographic history divergence dolphin gene flow genetic structure Holocene Pleistocene population structure Atlantic Ocean Atlantic Ocean (North) Mediterranean Sea Stenella (Cetacea) Stenella coeruleoalba Blackwell Publishing Ltd |
spellingShingle |
climate variation demographic history divergence dolphin gene flow genetic structure Holocene Pleistocene population structure Atlantic Ocean Atlantic Ocean (North) Mediterranean Sea Stenella (Cetacea) Stenella coeruleoalba Blackwell Publishing Ltd Gkafas G.A., Exadactylos A., Rogan E., Raga J.A., Reid R., Hoelzel A.R. Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters |
topic_facet |
climate variation demographic history divergence dolphin gene flow genetic structure Holocene Pleistocene population structure Atlantic Ocean Atlantic Ocean (North) Mediterranean Sea Stenella (Cetacea) Stenella coeruleoalba Blackwell Publishing Ltd |
description |
Aim: We investigated the population genetic structure of a highly mobile marine species, the striped dolphin, Stenella coeruleoalba (Meyen, 1833), along a geographical range with habitat transitions and historical dynamics to identify the causes of genetic divergence, and to assess the effect of past climate change on demography and population connectivity. Location: North-east Atlantic Ocean and Mediterranean Sea. Methods: Twenty microsatellite loci were used in conjunction with coalescent methods to investigate the genetic structure and demographic history of striped dolphins (Stenella coeruleoalba) in the Mediterranean Sea and eastern North Atlantic Ocean. Approximate Bayesian modelling was used to compare the support for alternative scenarios for the pattern of divergence over time in the context of known geographical transitions and environmental change over the course of the Quaternary. Results: We describe a novel pattern of structure among the extant populations along north–south and east–west axes. Modern gene flow shows strong directionality from north-east to south and west in the North Atlantic, and from west to east in the Mediterranean. On a temporal scale we found evidence for a progression starting with a division between the North Atlantic and Mediterranean Sea populations during the middle Pleistocene, followed by a division within the Mediterranean between the east and west basins towards the end of the Pleistocene, and finally an east–west division in the eastern North Atlantic at the start of the Holocene. Main conclusions: In the context of known population structure for other marine species along the same geographical range, our data facilitate inference of the more general processes that shaped patterns of biogeography across this region through the environmental transitions of the Quaternary. In particular, Pleistocene era divisions apparently reflect strong physical habitat boundaries, with later divisions associated with climate warming in the Holocene. © 2017 John Wiley & Sons Ltd |
format |
Article in Journal/Newspaper |
author |
Gkafas G.A., Exadactylos A., Rogan E., Raga J.A., Reid R., Hoelzel A.R. |
author_facet |
Gkafas G.A., Exadactylos A., Rogan E., Raga J.A., Reid R., Hoelzel A.R. |
author_sort |
Gkafas G.A., Exadactylos A., Rogan E., Raga J.A., Reid R., Hoelzel A.R. |
title |
Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters |
title_short |
Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters |
title_full |
Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters |
title_fullStr |
Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters |
title_full_unstemmed |
Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters |
title_sort |
biogeography and temporal progression during the evolution of striped dolphin population structure in european waters |
publishDate |
2017 |
url |
http://hdl.handle.net/11615/72427 https://doi.org/10.1111/jbi.13079 |
genre |
North Atlantic North East Atlantic |
genre_facet |
North Atlantic North East Atlantic |
op_source |
Journal of Biogeography https://www.scopus.com/inward/record.uri?eid=2-s2.0-85035051454&doi=10.1111%2fjbi.13079&partnerID=40&md5=8c952aab466eb7fb28aee72dfac748ef |
op_relation |
doi:10.1111/jbi.13079 03050270 http://hdl.handle.net/11615/72427 |
op_doi |
https://doi.org/10.1111/jbi.13079 |
container_title |
Journal of Biogeography |
container_volume |
44 |
container_issue |
12 |
container_start_page |
2681 |
op_container_end_page |
2691 |
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1766122908502982656 |