Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data
Marine systems have traditionally been thought of as “open” with few barriers to gene flow. In particular, many marine organisms in the Southern Ocean purportedly possess circumpolar distributions that have rarely been well verified. Here, we use the highly abundant and endemic Southern Ocean brittl...
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Data Archiving and Networked Services (DANS)
2017
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Online Access: | https://doi.org/10.5061/dryad.0k1r0 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::1574e802097f94173f8d40bda32909a0 2023-05-15T13:46:29+02:00 Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data Galaska, Matthew P. Sands, Chester J. Santos, Scott R. Mahon, Andrew R. Halanych, Kenneth M. 2017-01-01 https://doi.org/10.5061/dryad.0k1r0 undefined unknown Data Archiving and Networked Services (DANS) http://dx.doi.org/10.5061/dryad.0k1r0 https://dx.doi.org/10.5061/dryad.0k1r0 lic_creative-commons oai:easy.dans.knaw.nl:easy-dataset:95952 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:95952 10.5061/dryad.0k1r0 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Life sciences medicine and health care SNP RAD COI Phylogeography Population genetics Antarctica Ophionotus victoriae Ophiuroid envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2017 fttriple https://doi.org/10.5061/dryad.0k1r0 2023-01-22T17:41:59Z Marine systems have traditionally been thought of as “open” with few barriers to gene flow. In particular, many marine organisms in the Southern Ocean purportedly possess circumpolar distributions that have rarely been well verified. Here, we use the highly abundant and endemic Southern Ocean brittle star Ophionotus victoriae to examine genetic structure and determine whether barriers to gene flow have existed around the Antarctic continent. Ophionotus victoriae possesses feeding planktotrophic larvae with presumed high dispersal capability, but a previous study revealed genetic structure along the Antarctic Peninsula. To test the extent of genetic differentiation within O. victoriae, we sampled from the Ross Sea through the eastern Weddell Sea. Whereas two mitochondrial DNA markers (16S rDNA and COI) were employed to allow comparison to earlier work, a 2b-RAD single-nucleotide polymorphism (SNP) approach allowed sampling of loci across the genome. Mitochondrial data from 414 individuals suggested three major lineages, but 2b-RAD data generated 1,999 biallelic loci that identified four geographically distinct groups from 89 samples. Given the greater resolution by SNP data, O. victoriae can be divided into geographically distinct populations likely representing multiple species. Specific historical scenarios that explain current population structure were examined with approximate Bayesian computation (ABC) analyses. Although the Bransfield Strait region shows high diversity possibly due to mixing, our results suggest that within the recent past, dispersal processes due to strong currents such as the Antarctic Circumpolar Current have not overcome genetic subdivision presumably due to historical isolation, questioning the idea of large open circumpolar populations in the Southern Ocean. 2b-RAD STRUCTURE alignment of Ophionotus victoriae (Meyer)1,999 bi-allelic SNP loci using Dr. Eli Meyer's (Oregon State University) scripts which can be found at (https://github.com/Eli-Meyer)Ophionotus_Meyer_pipeline.stru2b-RAD ... Dataset Antarc* Antarctic Antarctic Peninsula Antarctica Bransfield Strait Ross Sea Southern Ocean Weddell Sea Unknown Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Ross Sea Bransfield Strait Weddell |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Life sciences medicine and health care SNP RAD COI Phylogeography Population genetics Antarctica Ophionotus victoriae Ophiuroid envir geo |
spellingShingle |
Life sciences medicine and health care SNP RAD COI Phylogeography Population genetics Antarctica Ophionotus victoriae Ophiuroid envir geo Galaska, Matthew P. Sands, Chester J. Santos, Scott R. Mahon, Andrew R. Halanych, Kenneth M. Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data |
topic_facet |
Life sciences medicine and health care SNP RAD COI Phylogeography Population genetics Antarctica Ophionotus victoriae Ophiuroid envir geo |
description |
Marine systems have traditionally been thought of as “open” with few barriers to gene flow. In particular, many marine organisms in the Southern Ocean purportedly possess circumpolar distributions that have rarely been well verified. Here, we use the highly abundant and endemic Southern Ocean brittle star Ophionotus victoriae to examine genetic structure and determine whether barriers to gene flow have existed around the Antarctic continent. Ophionotus victoriae possesses feeding planktotrophic larvae with presumed high dispersal capability, but a previous study revealed genetic structure along the Antarctic Peninsula. To test the extent of genetic differentiation within O. victoriae, we sampled from the Ross Sea through the eastern Weddell Sea. Whereas two mitochondrial DNA markers (16S rDNA and COI) were employed to allow comparison to earlier work, a 2b-RAD single-nucleotide polymorphism (SNP) approach allowed sampling of loci across the genome. Mitochondrial data from 414 individuals suggested three major lineages, but 2b-RAD data generated 1,999 biallelic loci that identified four geographically distinct groups from 89 samples. Given the greater resolution by SNP data, O. victoriae can be divided into geographically distinct populations likely representing multiple species. Specific historical scenarios that explain current population structure were examined with approximate Bayesian computation (ABC) analyses. Although the Bransfield Strait region shows high diversity possibly due to mixing, our results suggest that within the recent past, dispersal processes due to strong currents such as the Antarctic Circumpolar Current have not overcome genetic subdivision presumably due to historical isolation, questioning the idea of large open circumpolar populations in the Southern Ocean. 2b-RAD STRUCTURE alignment of Ophionotus victoriae (Meyer)1,999 bi-allelic SNP loci using Dr. Eli Meyer's (Oregon State University) scripts which can be found at (https://github.com/Eli-Meyer)Ophionotus_Meyer_pipeline.stru2b-RAD ... |
format |
Dataset |
author |
Galaska, Matthew P. Sands, Chester J. Santos, Scott R. Mahon, Andrew R. Halanych, Kenneth M. |
author_facet |
Galaska, Matthew P. Sands, Chester J. Santos, Scott R. Mahon, Andrew R. Halanych, Kenneth M. |
author_sort |
Galaska, Matthew P. |
title |
Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data |
title_short |
Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data |
title_full |
Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data |
title_fullStr |
Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data |
title_full_unstemmed |
Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data |
title_sort |
data from: geographic structure in the southern ocean circumpolar brittle star ophionotus victoriae (ophiuridae) revealed from mtdna and single nucleotide polymorphism data |
publisher |
Data Archiving and Networked Services (DANS) |
publishDate |
2017 |
url |
https://doi.org/10.5061/dryad.0k1r0 |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Ross Sea Bransfield Strait Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Ross Sea Bransfield Strait Weddell |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Bransfield Strait Ross Sea Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Bransfield Strait Ross Sea Southern Ocean Weddell Sea |
op_source |
oai:easy.dans.knaw.nl:easy-dataset:95952 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:95952 10.5061/dryad.0k1r0 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.0k1r0 https://dx.doi.org/10.5061/dryad.0k1r0 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.0k1r0 |
_version_ |
1766243249065820160 |