No leading-edge effect in North Atlantic harbor porpoises:Evolutionary and conservation implications
Understanding species responses to past environmental changes can help forecast how they will cope with ongoing climate changes. Harbor porpoises are widely distributed in the North Atlantic and were deeply impacted by the Pleistocene changes with the split of three sub‐species. Despite major impact...
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Online Access: | https://hdl.handle.net/11370/58d7e8e0-4d0e-4789-9d5b-26339c9a2c2b https://research.rug.nl/en/publications/58d7e8e0-4d0e-4789-9d5b-26339c9a2c2b https://doi.org/10.1101/2020.11.03.366542 https://pure.rug.nl/ws/files/178367092/eva.13227_1_.pdf |
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ftunigroningenpu:oai:pure.rug.nl:publications/58d7e8e0-4d0e-4789-9d5b-26339c9a2c2b 2024-06-23T07:53:18+00:00 No leading-edge effect in North Atlantic harbor porpoises:Evolutionary and conservation implications Ben Chehida, Yacine Loughnane, Roisin Thumloup, Julie Kaschner, Kristin Garilao, Cristina Rosel, Patricia E. Fontaine, Michael C. 2021-06 application/pdf https://hdl.handle.net/11370/58d7e8e0-4d0e-4789-9d5b-26339c9a2c2b https://research.rug.nl/en/publications/58d7e8e0-4d0e-4789-9d5b-26339c9a2c2b https://doi.org/10.1101/2020.11.03.366542 https://pure.rug.nl/ws/files/178367092/eva.13227_1_.pdf eng eng https://research.rug.nl/en/publications/58d7e8e0-4d0e-4789-9d5b-26339c9a2c2b info:eu-repo/semantics/openAccess Ben Chehida , Y , Loughnane , R , Thumloup , J , Kaschner , K , Garilao , C , Rosel , P E & Fontaine , M C 2021 , ' No leading-edge effect in North Atlantic harbor porpoises : Evolutionary and conservation implications ' , Evolutionary Applications , vol. 14 , no. 6 , pp. 1588-1611 . https://doi.org/10.1101/2020.11.03.366542 , https://doi.org/10.1111/eva.13227 Cetacea Conservation genetics Marine dispersal Marine glacial refugia Migration-drift equilibrium Philopatry Phylogeography Seascape genetics article 2021 ftunigroningenpu https://doi.org/10.1101/2020.11.03.366542 2024-06-10T16:58:57Z Understanding species responses to past environmental changes can help forecast how they will cope with ongoing climate changes. Harbor porpoises are widely distributed in the North Atlantic and were deeply impacted by the Pleistocene changes with the split of three sub‐species. Despite major impacts of fisheries on natural populations, little is known about population connectivity and dispersal, how they reacted to the Pleistocene changes and how they will evolve in the future. Here, we used phylogenetics, population genetics, and predictive habitat modelling to investigate population structure and phylogeographic history of the North Atlantic porpoises. A total of 925 porpoises were characterized at 10 microsatellite loci and one‐quarter of the mitogenome (mtDNA). A highly divergent mtDNA lineage was uncovered in one porpoise off Western Greenland, suggesting that a cryptic group may occur and could belong to a recently discovered mesopelagic ecotype off Greenland. Aside from it and the southern sub‐species, spatial genetic variation showed that porpoises from both sides of the North Atlantic form a continuous system belonging to the same subspecies (Phocoena phocoena phocoena). Yet, we identified important departures from random mating and restricted dispersal forming a highly significant isolation‐by‐distance (IBD) at both mtDNA and nuclear markers. A ten times stronger IBD at mtDNA compared to nuclear loci supported previous evidence of female philopatry. Together with the lack of spatial trends in genetic diversity, this IBD suggests that migration‐drift equilibrium has been reached, erasing any genetic signal of a leading‐edge effect that accompanied the predicted recolonization of the northern habitats freed from Pleistocene ice. These results illuminate the processes shaping porpoise population structure and provide a framework for designing conservation strategies and forecasting future population evolution. Article in Journal/Newspaper Greenland North Atlantic Phocoena phocoena University of Groningen research database Freed ENVELOPE(164.333,164.333,-71.483,-71.483) Greenland |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
Cetacea Conservation genetics Marine dispersal Marine glacial refugia Migration-drift equilibrium Philopatry Phylogeography Seascape genetics |
spellingShingle |
Cetacea Conservation genetics Marine dispersal Marine glacial refugia Migration-drift equilibrium Philopatry Phylogeography Seascape genetics Ben Chehida, Yacine Loughnane, Roisin Thumloup, Julie Kaschner, Kristin Garilao, Cristina Rosel, Patricia E. Fontaine, Michael C. No leading-edge effect in North Atlantic harbor porpoises:Evolutionary and conservation implications |
topic_facet |
Cetacea Conservation genetics Marine dispersal Marine glacial refugia Migration-drift equilibrium Philopatry Phylogeography Seascape genetics |
description |
Understanding species responses to past environmental changes can help forecast how they will cope with ongoing climate changes. Harbor porpoises are widely distributed in the North Atlantic and were deeply impacted by the Pleistocene changes with the split of three sub‐species. Despite major impacts of fisheries on natural populations, little is known about population connectivity and dispersal, how they reacted to the Pleistocene changes and how they will evolve in the future. Here, we used phylogenetics, population genetics, and predictive habitat modelling to investigate population structure and phylogeographic history of the North Atlantic porpoises. A total of 925 porpoises were characterized at 10 microsatellite loci and one‐quarter of the mitogenome (mtDNA). A highly divergent mtDNA lineage was uncovered in one porpoise off Western Greenland, suggesting that a cryptic group may occur and could belong to a recently discovered mesopelagic ecotype off Greenland. Aside from it and the southern sub‐species, spatial genetic variation showed that porpoises from both sides of the North Atlantic form a continuous system belonging to the same subspecies (Phocoena phocoena phocoena). Yet, we identified important departures from random mating and restricted dispersal forming a highly significant isolation‐by‐distance (IBD) at both mtDNA and nuclear markers. A ten times stronger IBD at mtDNA compared to nuclear loci supported previous evidence of female philopatry. Together with the lack of spatial trends in genetic diversity, this IBD suggests that migration‐drift equilibrium has been reached, erasing any genetic signal of a leading‐edge effect that accompanied the predicted recolonization of the northern habitats freed from Pleistocene ice. These results illuminate the processes shaping porpoise population structure and provide a framework for designing conservation strategies and forecasting future population evolution. |
format |
Article in Journal/Newspaper |
author |
Ben Chehida, Yacine Loughnane, Roisin Thumloup, Julie Kaschner, Kristin Garilao, Cristina Rosel, Patricia E. Fontaine, Michael C. |
author_facet |
Ben Chehida, Yacine Loughnane, Roisin Thumloup, Julie Kaschner, Kristin Garilao, Cristina Rosel, Patricia E. Fontaine, Michael C. |
author_sort |
Ben Chehida, Yacine |
title |
No leading-edge effect in North Atlantic harbor porpoises:Evolutionary and conservation implications |
title_short |
No leading-edge effect in North Atlantic harbor porpoises:Evolutionary and conservation implications |
title_full |
No leading-edge effect in North Atlantic harbor porpoises:Evolutionary and conservation implications |
title_fullStr |
No leading-edge effect in North Atlantic harbor porpoises:Evolutionary and conservation implications |
title_full_unstemmed |
No leading-edge effect in North Atlantic harbor porpoises:Evolutionary and conservation implications |
title_sort |
no leading-edge effect in north atlantic harbor porpoises:evolutionary and conservation implications |
publishDate |
2021 |
url |
https://hdl.handle.net/11370/58d7e8e0-4d0e-4789-9d5b-26339c9a2c2b https://research.rug.nl/en/publications/58d7e8e0-4d0e-4789-9d5b-26339c9a2c2b https://doi.org/10.1101/2020.11.03.366542 https://pure.rug.nl/ws/files/178367092/eva.13227_1_.pdf |
long_lat |
ENVELOPE(164.333,164.333,-71.483,-71.483) |
geographic |
Freed Greenland |
geographic_facet |
Freed Greenland |
genre |
Greenland North Atlantic Phocoena phocoena |
genre_facet |
Greenland North Atlantic Phocoena phocoena |
op_source |
Ben Chehida , Y , Loughnane , R , Thumloup , J , Kaschner , K , Garilao , C , Rosel , P E & Fontaine , M C 2021 , ' No leading-edge effect in North Atlantic harbor porpoises : Evolutionary and conservation implications ' , Evolutionary Applications , vol. 14 , no. 6 , pp. 1588-1611 . https://doi.org/10.1101/2020.11.03.366542 , https://doi.org/10.1111/eva.13227 |
op_relation |
https://research.rug.nl/en/publications/58d7e8e0-4d0e-4789-9d5b-26339c9a2c2b |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1101/2020.11.03.366542 |
_version_ |
1802644892539682816 |