Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates
Antarctica is isolated, surrounded by the Southern Ocean, and has experienced extreme environmental conditions for millions of years, including during recent Pleistocene glacial maxima. How Antarctic terrestrial species might have survived these glaciations has been a topic of intense interest, yet...
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ftnerc:oai:nora.nerc.ac.uk:525389 2023-12-17T10:20:48+01:00 Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates McGaughran, Angela Terauds, Aleks Convey, Peter Fraser, Ceridwen I. 2019-11-08 text http://nora.nerc.ac.uk/id/eprint/525389/ https://nora.nerc.ac.uk/id/eprint/525389/1/McGaughran_et_al-2019-Molecular_Ecology.pdf https://onlinelibrary.wiley.com/doi/abs/10.1111/mec.15269 en eng Wiley https://nora.nerc.ac.uk/id/eprint/525389/1/McGaughran_et_al-2019-Molecular_Ecology.pdf McGaughran, Angela; Terauds, Aleks; Convey, Peter orcid:0000-0001-8497-9903 Fraser, Ceridwen I. 2019 Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates. Molecular Ecology, 28 (22). 4941-4957. https://doi.org/10.1111/mec.15269 <https://doi.org/10.1111/mec.15269> Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1111/mec.15269 2023-11-17T00:03:30Z Antarctica is isolated, surrounded by the Southern Ocean, and has experienced extreme environmental conditions for millions of years, including during recent Pleistocene glacial maxima. How Antarctic terrestrial species might have survived these glaciations has been a topic of intense interest, yet many questions remain unanswered, particularly for Antarctica’s invertebrate fauna. We examine whether genetic data from a widespread group of terrestrial invertebrates, springtails (Collembola, Isotomidae) of the genus Cryptopygus, show evidence for long‐term survival in glacial refugia along the Antarctic Peninsula. We use genome‐wide SNP analyses (via genotyping‐by‐sequencing, GBS) and mitochondrial data to examine population diversity and differentiation across more than 20 sites spanning >950 km on the Peninsula, and from islands both close to the Peninsula and up to ~1,900 km away. Population structure analysis indicates the presence of strong local clusters of diversity, and we infer that patterns represent a complex interplay of isolation in local refugia coupled with occasional successful long‐distance dispersal events. We identified wind and degree days as significant environmental drivers of genetic diversity, with windier and warmer sites hosting higher diversity. Thus, we infer that refugial areas along the Antarctic Peninsula have allowed populations of indigenous springtails to survive in situ throughout glacial periods. Despite the difficulties of dispersal in cold, desiccating conditions, Cryptopygus springtails on the Peninsula appear to have achieved multiple long‐distance colonisation events, most likely through wind‐related dispersal events. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic Antarctic Peninsula Molecular Ecology 28 22 4941 4957 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
Antarctica is isolated, surrounded by the Southern Ocean, and has experienced extreme environmental conditions for millions of years, including during recent Pleistocene glacial maxima. How Antarctic terrestrial species might have survived these glaciations has been a topic of intense interest, yet many questions remain unanswered, particularly for Antarctica’s invertebrate fauna. We examine whether genetic data from a widespread group of terrestrial invertebrates, springtails (Collembola, Isotomidae) of the genus Cryptopygus, show evidence for long‐term survival in glacial refugia along the Antarctic Peninsula. We use genome‐wide SNP analyses (via genotyping‐by‐sequencing, GBS) and mitochondrial data to examine population diversity and differentiation across more than 20 sites spanning >950 km on the Peninsula, and from islands both close to the Peninsula and up to ~1,900 km away. Population structure analysis indicates the presence of strong local clusters of diversity, and we infer that patterns represent a complex interplay of isolation in local refugia coupled with occasional successful long‐distance dispersal events. We identified wind and degree days as significant environmental drivers of genetic diversity, with windier and warmer sites hosting higher diversity. Thus, we infer that refugial areas along the Antarctic Peninsula have allowed populations of indigenous springtails to survive in situ throughout glacial periods. Despite the difficulties of dispersal in cold, desiccating conditions, Cryptopygus springtails on the Peninsula appear to have achieved multiple long‐distance colonisation events, most likely through wind‐related dispersal events. |
format |
Article in Journal/Newspaper |
author |
McGaughran, Angela Terauds, Aleks Convey, Peter Fraser, Ceridwen I. |
spellingShingle |
McGaughran, Angela Terauds, Aleks Convey, Peter Fraser, Ceridwen I. Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates |
author_facet |
McGaughran, Angela Terauds, Aleks Convey, Peter Fraser, Ceridwen I. |
author_sort |
McGaughran, Angela |
title |
Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates |
title_short |
Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates |
title_full |
Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates |
title_fullStr |
Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates |
title_full_unstemmed |
Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates |
title_sort |
genome‐wide snp data reveal improved evidence for antarctic glacial refugia and dispersal of terrestrial invertebrates |
publisher |
Wiley |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/525389/ https://nora.nerc.ac.uk/id/eprint/525389/1/McGaughran_et_al-2019-Molecular_Ecology.pdf https://onlinelibrary.wiley.com/doi/abs/10.1111/mec.15269 |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/525389/1/McGaughran_et_al-2019-Molecular_Ecology.pdf McGaughran, Angela; Terauds, Aleks; Convey, Peter orcid:0000-0001-8497-9903 Fraser, Ceridwen I. 2019 Genome‐wide SNP data reveal improved evidence for Antarctic glacial refugia and dispersal of terrestrial invertebrates. Molecular Ecology, 28 (22). 4941-4957. https://doi.org/10.1111/mec.15269 <https://doi.org/10.1111/mec.15269> |
op_doi |
https://doi.org/10.1111/mec.15269 |
container_title |
Molecular Ecology |
container_volume |
28 |
container_issue |
22 |
container_start_page |
4941 |
op_container_end_page |
4957 |
_version_ |
1785526288715350016 |