Genome-wide phylogeography reveals cryptic speciation in the circumglobal planktonic calcifier Limacina bulimoides
Little is known about when and how planktonic species arise and persist in the open ocean without apparent dispersal barriers. Pteropods are planktonic snails with thin shells susceptible to dissolution that are used as bio-indicators of ocean acidification. However, distinct evolutionary units resp...
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Language: | English |
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Online Access: | https://doi.org/10.1111/mec.16931 |
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fteawag:oai:dora:eawag_31099 2023-07-16T04:00:19+02:00 Genome-wide phylogeography reveals cryptic speciation in the circumglobal planktonic calcifier Limacina bulimoides Choo, L.Q. Spagliardi, G. Malinsky, M. Choquet, M. Goetze, E. Hoarau, G. Peijnenburg, K.T.C.A. 2023 https://doi.org/10.1111/mec.16931 eng eng Wiley Molecular Ecology--Mol. Ecol.--journals:2106--0962-1083--1365-294X eawag:31099 doi:10.1111/mec.16931 scopus: 2-s2.0-85151929032 journal id: journals:2106 issn: 0962-1083 e-issn: 1365-294X ut: 000962689600001 genome-wide snps marine zooplankton phylogeography population genomics Journal Article Text 2023 fteawag https://doi.org/10.1111/mec.16931 2023-06-25T23:49:50Z Little is known about when and how planktonic species arise and persist in the open ocean without apparent dispersal barriers. Pteropods are planktonic snails with thin shells susceptible to dissolution that are used as bio-indicators of ocean acidification. However, distinct evolutionary units respond to acidification differently, and defining species boundaries is therefore crucial for predicting the impact of changing ocean conditions. In this global population genomic study of the shelled pteropod Limacina bulimoides , we combined genetic (759,000 single nucleotide polymorphisms) and morphometric data from 161 individuals, revealing three major genetic lineages ( F ST = 0.29–0.41): an "Atlantic lineage" sampled across the Atlantic, an "Indo-Pacific lineage" sampled in the North Pacific and Indian Ocean, and a "Pacific lineage" sampled in the North and South Pacific. A time-calibrated phylogeny suggests that the lineages diverged about 1 million years ago, with estimated effective population size remaining high (~10 million) throughout Pleistocene glacial cycles. We do not observe any signatures of recent hybridization, even in areas of sympatry in the North Pacific. While the lineages are reproductively isolated, they are morphologically cryptic, with overlapping shell shape and shell colour distributions. Despite showing that the circumglobal L. bulimoides consists of multiple species with smaller ranges than initially thought, we found that these pteropods still possess high levels of genetic variability. Our study adds to the growing evidence that speciation is often overlooked in the open ocean, and suggests the presence of distinct biological species within many other currently defined circumglobal planktonic species. Article in Journal/Newspaper Ocean acidification DORA Eawag Indian Pacific Molecular Ecology 32 12 3200 3219 |
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Open Polar |
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op_collection_id |
fteawag |
language |
English |
topic |
genome-wide snps marine zooplankton phylogeography population genomics |
spellingShingle |
genome-wide snps marine zooplankton phylogeography population genomics Choo, L.Q. Spagliardi, G. Malinsky, M. Choquet, M. Goetze, E. Hoarau, G. Peijnenburg, K.T.C.A. Genome-wide phylogeography reveals cryptic speciation in the circumglobal planktonic calcifier Limacina bulimoides |
topic_facet |
genome-wide snps marine zooplankton phylogeography population genomics |
description |
Little is known about when and how planktonic species arise and persist in the open ocean without apparent dispersal barriers. Pteropods are planktonic snails with thin shells susceptible to dissolution that are used as bio-indicators of ocean acidification. However, distinct evolutionary units respond to acidification differently, and defining species boundaries is therefore crucial for predicting the impact of changing ocean conditions. In this global population genomic study of the shelled pteropod Limacina bulimoides , we combined genetic (759,000 single nucleotide polymorphisms) and morphometric data from 161 individuals, revealing three major genetic lineages ( F ST = 0.29–0.41): an "Atlantic lineage" sampled across the Atlantic, an "Indo-Pacific lineage" sampled in the North Pacific and Indian Ocean, and a "Pacific lineage" sampled in the North and South Pacific. A time-calibrated phylogeny suggests that the lineages diverged about 1 million years ago, with estimated effective population size remaining high (~10 million) throughout Pleistocene glacial cycles. We do not observe any signatures of recent hybridization, even in areas of sympatry in the North Pacific. While the lineages are reproductively isolated, they are morphologically cryptic, with overlapping shell shape and shell colour distributions. Despite showing that the circumglobal L. bulimoides consists of multiple species with smaller ranges than initially thought, we found that these pteropods still possess high levels of genetic variability. Our study adds to the growing evidence that speciation is often overlooked in the open ocean, and suggests the presence of distinct biological species within many other currently defined circumglobal planktonic species. |
format |
Article in Journal/Newspaper |
author |
Choo, L.Q. Spagliardi, G. Malinsky, M. Choquet, M. Goetze, E. Hoarau, G. Peijnenburg, K.T.C.A. |
author_facet |
Choo, L.Q. Spagliardi, G. Malinsky, M. Choquet, M. Goetze, E. Hoarau, G. Peijnenburg, K.T.C.A. |
author_sort |
Choo, L.Q. |
title |
Genome-wide phylogeography reveals cryptic speciation in the circumglobal planktonic calcifier Limacina bulimoides |
title_short |
Genome-wide phylogeography reveals cryptic speciation in the circumglobal planktonic calcifier Limacina bulimoides |
title_full |
Genome-wide phylogeography reveals cryptic speciation in the circumglobal planktonic calcifier Limacina bulimoides |
title_fullStr |
Genome-wide phylogeography reveals cryptic speciation in the circumglobal planktonic calcifier Limacina bulimoides |
title_full_unstemmed |
Genome-wide phylogeography reveals cryptic speciation in the circumglobal planktonic calcifier Limacina bulimoides |
title_sort |
genome-wide phylogeography reveals cryptic speciation in the circumglobal planktonic calcifier limacina bulimoides |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1111/mec.16931 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Molecular Ecology--Mol. Ecol.--journals:2106--0962-1083--1365-294X eawag:31099 doi:10.1111/mec.16931 scopus: 2-s2.0-85151929032 journal id: journals:2106 issn: 0962-1083 e-issn: 1365-294X ut: 000962689600001 |
op_doi |
https://doi.org/10.1111/mec.16931 |
container_title |
Molecular Ecology |
container_volume |
32 |
container_issue |
12 |
container_start_page |
3200 |
op_container_end_page |
3219 |
_version_ |
1771548983687118848 |