Image 2_Does rafting promote contemporary gene flow? Global and regional patterns of population genetic diversity and structure on the false limpet Siphonaria lateralis in the Southern Ocean.tiff
Rafting has been proposed as an effective mechanism for species without free-living pelagic larvae to achieve long-distance dispersal, theoretically preventing population differentiation over wide distributional ranges. Moreover, rafting has been advocated as a main dispersal mechanism for marine in...
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Online Access: | https://doi.org/10.3389/fevo.2024.1441397.s007 https://figshare.com/articles/figure/Image_2_Does_rafting_promote_contemporary_gene_flow_Global_and_regional_patterns_of_population_genetic_diversity_and_structure_on_the_false_limpet_Siphonaria_lateralis_in_the_Southern_Ocean_tiff/26967655 |
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ftfrontimediafig:oai:figshare.com:article/26967655 2024-09-30T14:27:10+00:00 Image 2_Does rafting promote contemporary gene flow? Global and regional patterns of population genetic diversity and structure on the false limpet Siphonaria lateralis in the Southern Ocean.tiff Constanza Millán-Medina Marcelo Lizama Thomas Saucède Elie Poulin Nicolás I. Segovia Claudio González-Wevar 2024-09-09T05:02:43Z https://doi.org/10.3389/fevo.2024.1441397.s007 https://figshare.com/articles/figure/Image_2_Does_rafting_promote_contemporary_gene_flow_Global_and_regional_patterns_of_population_genetic_diversity_and_structure_on_the_false_limpet_Siphonaria_lateralis_in_the_Southern_Ocean_tiff/26967655 unknown doi:10.3389/fevo.2024.1441397.s007 https://figshare.com/articles/figure/Image_2_Does_rafting_promote_contemporary_gene_flow_Global_and_regional_patterns_of_population_genetic_diversity_and_structure_on_the_false_limpet_Siphonaria_lateralis_in_the_Southern_Ocean_tiff/26967655 CC BY 4.0 Ecology long distance dispersal sub-Antarctic rafting Antarctic Circumpolar Current benthic protected development Genotyping-by-Sequencing gene flow Image Figure 2024 ftfrontimediafig https://doi.org/10.3389/fevo.2024.1441397.s007 2024-09-16T14:23:18Z Rafting has been proposed as an effective mechanism for species without free-living pelagic larvae to achieve long-distance dispersal, theoretically preventing population differentiation over wide distributional ranges. Moreover, rafting has been advocated as a main dispersal mechanism for marine invertebrates with sub-Antarctic distributions, because of abundant buoyant kelps, driven by the Antarctic Circumpolar Current. Nonetheless, little attention has been given to the role of rafting to establish regular gene flow across the sub-Antarctic, and the geographic and temporal scales at which it occurs. Aiming to unravel these major questions about the extent of genetic connectivity across the Southern Ocean (SO), we studied the pulmonate limpet Siphonaria lateralis, a benthic species with encapsulated larvae, found on the rocky intertidal of sub-Antarctic islands and southern South America. Since S. lateralis is closely associated with D. antarctica, dispersal by rafting is plausible, as revealed by the absence of phylogeographic structure across the sub-Antarctic. We sampled 116 individuals from eight localities across the SO, and used 5,515 SNPs obtained through Genotyping-by-Sequencing, to determine contemporary genetic diversity, structure, and gene flow at two spatial scales; global, across the SO, and regional, within Kerguelen. Results identified substantial genetic structure, differentiating Patagonia, Falklands/Malvinas Islands, South Georgia and the Kerguelen archipelago, and low levels of contemporary gene flow. The most notable genetic differentiation was found between Patagonia/Falklands and South Georgia/Kerguelen. Structure was also significant between Patagonia and the Falkland/Malvinas Islands. Conversely, South Georgia and Kerguelen exhibited closer genetic affinity, and indications of recent but limited gene flow. Moreover, historical gene flow estimates between the four populations were low. At regional scale, noteworthy genetic structure persisted, and gene flow was insufficient to prevent ... Still Image Antarc* Antarctic Antarctica Southern Ocean Frontiers: Figshare Antarctic Southern Ocean The Antarctic Patagonia Kerguelen |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Ecology long distance dispersal sub-Antarctic rafting Antarctic Circumpolar Current benthic protected development Genotyping-by-Sequencing gene flow |
spellingShingle |
Ecology long distance dispersal sub-Antarctic rafting Antarctic Circumpolar Current benthic protected development Genotyping-by-Sequencing gene flow Constanza Millán-Medina Marcelo Lizama Thomas Saucède Elie Poulin Nicolás I. Segovia Claudio González-Wevar Image 2_Does rafting promote contemporary gene flow? Global and regional patterns of population genetic diversity and structure on the false limpet Siphonaria lateralis in the Southern Ocean.tiff |
topic_facet |
Ecology long distance dispersal sub-Antarctic rafting Antarctic Circumpolar Current benthic protected development Genotyping-by-Sequencing gene flow |
description |
Rafting has been proposed as an effective mechanism for species without free-living pelagic larvae to achieve long-distance dispersal, theoretically preventing population differentiation over wide distributional ranges. Moreover, rafting has been advocated as a main dispersal mechanism for marine invertebrates with sub-Antarctic distributions, because of abundant buoyant kelps, driven by the Antarctic Circumpolar Current. Nonetheless, little attention has been given to the role of rafting to establish regular gene flow across the sub-Antarctic, and the geographic and temporal scales at which it occurs. Aiming to unravel these major questions about the extent of genetic connectivity across the Southern Ocean (SO), we studied the pulmonate limpet Siphonaria lateralis, a benthic species with encapsulated larvae, found on the rocky intertidal of sub-Antarctic islands and southern South America. Since S. lateralis is closely associated with D. antarctica, dispersal by rafting is plausible, as revealed by the absence of phylogeographic structure across the sub-Antarctic. We sampled 116 individuals from eight localities across the SO, and used 5,515 SNPs obtained through Genotyping-by-Sequencing, to determine contemporary genetic diversity, structure, and gene flow at two spatial scales; global, across the SO, and regional, within Kerguelen. Results identified substantial genetic structure, differentiating Patagonia, Falklands/Malvinas Islands, South Georgia and the Kerguelen archipelago, and low levels of contemporary gene flow. The most notable genetic differentiation was found between Patagonia/Falklands and South Georgia/Kerguelen. Structure was also significant between Patagonia and the Falkland/Malvinas Islands. Conversely, South Georgia and Kerguelen exhibited closer genetic affinity, and indications of recent but limited gene flow. Moreover, historical gene flow estimates between the four populations were low. At regional scale, noteworthy genetic structure persisted, and gene flow was insufficient to prevent ... |
format |
Still Image |
author |
Constanza Millán-Medina Marcelo Lizama Thomas Saucède Elie Poulin Nicolás I. Segovia Claudio González-Wevar |
author_facet |
Constanza Millán-Medina Marcelo Lizama Thomas Saucède Elie Poulin Nicolás I. Segovia Claudio González-Wevar |
author_sort |
Constanza Millán-Medina |
title |
Image 2_Does rafting promote contemporary gene flow? Global and regional patterns of population genetic diversity and structure on the false limpet Siphonaria lateralis in the Southern Ocean.tiff |
title_short |
Image 2_Does rafting promote contemporary gene flow? Global and regional patterns of population genetic diversity and structure on the false limpet Siphonaria lateralis in the Southern Ocean.tiff |
title_full |
Image 2_Does rafting promote contemporary gene flow? Global and regional patterns of population genetic diversity and structure on the false limpet Siphonaria lateralis in the Southern Ocean.tiff |
title_fullStr |
Image 2_Does rafting promote contemporary gene flow? Global and regional patterns of population genetic diversity and structure on the false limpet Siphonaria lateralis in the Southern Ocean.tiff |
title_full_unstemmed |
Image 2_Does rafting promote contemporary gene flow? Global and regional patterns of population genetic diversity and structure on the false limpet Siphonaria lateralis in the Southern Ocean.tiff |
title_sort |
image 2_does rafting promote contemporary gene flow? global and regional patterns of population genetic diversity and structure on the false limpet siphonaria lateralis in the southern ocean.tiff |
publishDate |
2024 |
url |
https://doi.org/10.3389/fevo.2024.1441397.s007 https://figshare.com/articles/figure/Image_2_Does_rafting_promote_contemporary_gene_flow_Global_and_regional_patterns_of_population_genetic_diversity_and_structure_on_the_false_limpet_Siphonaria_lateralis_in_the_Southern_Ocean_tiff/26967655 |
geographic |
Antarctic Southern Ocean The Antarctic Patagonia Kerguelen |
geographic_facet |
Antarctic Southern Ocean The Antarctic Patagonia Kerguelen |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_relation |
doi:10.3389/fevo.2024.1441397.s007 https://figshare.com/articles/figure/Image_2_Does_rafting_promote_contemporary_gene_flow_Global_and_regional_patterns_of_population_genetic_diversity_and_structure_on_the_false_limpet_Siphonaria_lateralis_in_the_Southern_Ocean_tiff/26967655 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fevo.2024.1441397.s007 |
_version_ |
1811633320571699200 |