Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion?
Oscillations in the Earth’s temperature and the subsequent retreating and advancing of ice-sheets around the polar regions are thought to have played an important role in shaping the distribution and genetic structuring of contemporary high-latitude populations. After the Last Glacial Maximum (LGM),...
Published in: | Journal of Heredity |
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Main Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | https://research.bangor.ac.uk/portal/en/researchoutputs/postglacial-colonization-of-northern-coastal-habitat-by-bottlenose-dolphins-a-marine-leadingedge-expansion(76b80fb0-55c2-479c-9487-f282c38a97b3).html https://doi.org/10.1093/jhered/esz039 https://research.bangor.ac.uk/ws/files/25145879/Nykanen_et_al._2019.pdf |
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ftuwalesbangcris:oai:research.bangor.ac.uk:publications/76b80fb0-55c2-479c-9487-f282c38a97b3 2023-05-15T17:41:38+02:00 Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? Nykänen, Milaja Kaschner, Kristin Dabin, Willy Brownlow, Davison, Nicholas J Deaville, Rob Garilao, Christina Kesner-Reyes, Kathleen Gilbert, M. Thomas P. Penrose, Rod Islas-Villanueva, Valentina Wales, Nathan Ingram, Simon Rogan, Emer Louis, Marie Foote, Andrew 2019-09 application/pdf https://research.bangor.ac.uk/portal/en/researchoutputs/postglacial-colonization-of-northern-coastal-habitat-by-bottlenose-dolphins-a-marine-leadingedge-expansion(76b80fb0-55c2-479c-9487-f282c38a97b3).html https://doi.org/10.1093/jhered/esz039 https://research.bangor.ac.uk/ws/files/25145879/Nykanen_et_al._2019.pdf eng eng info:eu-repo/semantics/openAccess Nykänen , M , Kaschner , K , Dabin , W , Brownlow , Davison , N J , Deaville , R , Garilao , C , Kesner-Reyes , K , Gilbert , M T P , Penrose , R , Islas-Villanueva , V , Wales , N , Ingram , S , Rogan , E , Louis , M & Foote , A 2019 , ' Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? ' , Journal of Heredity , vol. 110 , no. 6 , pp. 662-674 . https://doi.org/10.1093/jhered/esz039 genetic diversity habitat modeling Last Glacial Maximum multispecies coalescent phylogenetics time-dependency article 2019 ftuwalesbangcris https://doi.org/10.1093/jhered/esz039 2021-12-26T12:06:37Z Oscillations in the Earth’s temperature and the subsequent retreating and advancing of ice-sheets around the polar regions are thought to have played an important role in shaping the distribution and genetic structuring of contemporary high-latitude populations. After the Last Glacial Maximum (LGM), retreating of the ice-sheets would have enabled early colonizers to rapidly occupy suitable niches to the exclusion of other conspecifics, thereby reducing genetic diversity at the leading-edge. Bottlenose dolphins (genus Tursiops) form distinct coastal and pelagic ecotypes, with finer-scale genetic structuring observed within each ecotype. We reconstruct the postglacial colonization of the Northeast Atlantic (NEA) by bottlenose dolphins using habitat modeling and phylogenetics. The AquaMaps model hindcasted suitable habitat for the LGM in the Atlantic lower latitude waters and parts of the Mediterranean Sea. The time-calibrated phylogeny, constructed with 86 complete mitochondrial genomes including 30 generated for this study and created using a multispecies coalescent model, suggests that the expansion to the available coastal habitat in the NEA happened via founder events starting ~15 000 years ago (95% highest posterior density interval: 4 900–26 400). The founders of the 2 distinct coastal NEA populations comprised as few as 2 maternal lineages that originated from the pelagic population. The low effective population size and genetic diversity estimated for the shared ancestral coastal population subsequent to divergence from the pelagic source population are consistent with leading-edge expansion. These findings highlight the legacy of the Late Pleistocene glacial cycles on the genetic structuring and diversity of contemporary populations. Article in Journal/Newspaper Northeast Atlantic Bangor University: Research Portal Journal of Heredity 110 6 662 674 |
institution |
Open Polar |
collection |
Bangor University: Research Portal |
op_collection_id |
ftuwalesbangcris |
language |
English |
topic |
genetic diversity habitat modeling Last Glacial Maximum multispecies coalescent phylogenetics time-dependency |
spellingShingle |
genetic diversity habitat modeling Last Glacial Maximum multispecies coalescent phylogenetics time-dependency Nykänen, Milaja Kaschner, Kristin Dabin, Willy Brownlow, Davison, Nicholas J Deaville, Rob Garilao, Christina Kesner-Reyes, Kathleen Gilbert, M. Thomas P. Penrose, Rod Islas-Villanueva, Valentina Wales, Nathan Ingram, Simon Rogan, Emer Louis, Marie Foote, Andrew Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? |
topic_facet |
genetic diversity habitat modeling Last Glacial Maximum multispecies coalescent phylogenetics time-dependency |
description |
Oscillations in the Earth’s temperature and the subsequent retreating and advancing of ice-sheets around the polar regions are thought to have played an important role in shaping the distribution and genetic structuring of contemporary high-latitude populations. After the Last Glacial Maximum (LGM), retreating of the ice-sheets would have enabled early colonizers to rapidly occupy suitable niches to the exclusion of other conspecifics, thereby reducing genetic diversity at the leading-edge. Bottlenose dolphins (genus Tursiops) form distinct coastal and pelagic ecotypes, with finer-scale genetic structuring observed within each ecotype. We reconstruct the postglacial colonization of the Northeast Atlantic (NEA) by bottlenose dolphins using habitat modeling and phylogenetics. The AquaMaps model hindcasted suitable habitat for the LGM in the Atlantic lower latitude waters and parts of the Mediterranean Sea. The time-calibrated phylogeny, constructed with 86 complete mitochondrial genomes including 30 generated for this study and created using a multispecies coalescent model, suggests that the expansion to the available coastal habitat in the NEA happened via founder events starting ~15 000 years ago (95% highest posterior density interval: 4 900–26 400). The founders of the 2 distinct coastal NEA populations comprised as few as 2 maternal lineages that originated from the pelagic population. The low effective population size and genetic diversity estimated for the shared ancestral coastal population subsequent to divergence from the pelagic source population are consistent with leading-edge expansion. These findings highlight the legacy of the Late Pleistocene glacial cycles on the genetic structuring and diversity of contemporary populations. |
format |
Article in Journal/Newspaper |
author |
Nykänen, Milaja Kaschner, Kristin Dabin, Willy Brownlow, Davison, Nicholas J Deaville, Rob Garilao, Christina Kesner-Reyes, Kathleen Gilbert, M. Thomas P. Penrose, Rod Islas-Villanueva, Valentina Wales, Nathan Ingram, Simon Rogan, Emer Louis, Marie Foote, Andrew |
author_facet |
Nykänen, Milaja Kaschner, Kristin Dabin, Willy Brownlow, Davison, Nicholas J Deaville, Rob Garilao, Christina Kesner-Reyes, Kathleen Gilbert, M. Thomas P. Penrose, Rod Islas-Villanueva, Valentina Wales, Nathan Ingram, Simon Rogan, Emer Louis, Marie Foote, Andrew |
author_sort |
Nykänen, Milaja |
title |
Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? |
title_short |
Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? |
title_full |
Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? |
title_fullStr |
Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? |
title_full_unstemmed |
Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? |
title_sort |
post-glacial colonization of northern coastal habitat by bottlenose dolphins: a marine leading-edge expansion? |
publishDate |
2019 |
url |
https://research.bangor.ac.uk/portal/en/researchoutputs/postglacial-colonization-of-northern-coastal-habitat-by-bottlenose-dolphins-a-marine-leadingedge-expansion(76b80fb0-55c2-479c-9487-f282c38a97b3).html https://doi.org/10.1093/jhered/esz039 https://research.bangor.ac.uk/ws/files/25145879/Nykanen_et_al._2019.pdf |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Nykänen , M , Kaschner , K , Dabin , W , Brownlow , Davison , N J , Deaville , R , Garilao , C , Kesner-Reyes , K , Gilbert , M T P , Penrose , R , Islas-Villanueva , V , Wales , N , Ingram , S , Rogan , E , Louis , M & Foote , A 2019 , ' Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? ' , Journal of Heredity , vol. 110 , no. 6 , pp. 662-674 . https://doi.org/10.1093/jhered/esz039 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/jhered/esz039 |
container_title |
Journal of Heredity |
container_volume |
110 |
container_issue |
6 |
container_start_page |
662 |
op_container_end_page |
674 |
_version_ |
1766143292420915200 |