Data

Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider

Australian Antarctic Division
Soler-Membrives, A., Miller, K.J., Linse, K. and Arango, C. ; SOLER-MEMBRIVES, ANNA ; MILLER, KAREN J. ; LINSE, KATRIN ; ARANGO, CLAUDIA
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/AAS_3010_Sea_Spiders_Genetics&rft.title=Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider&rft.identifier=http://data.aad.gov.au/metadata/AAS_3010_Sea_Spiders_Genetics&rft.publisher=Australian Antarctic Data Centre&rft.description=Metadata record for data collected as part of Australian Antarctic Science project 3010 in the Australian Antarctic program.From the abstract of the referenced paper:The evolutionary history of Antarctic organisms is becoming increasingly important to understand and manage population trajectories under rapid environmental change. The Antarctic sea spider Nymphon australe, with an apparently large population size compared with other sea spider species, is an ideal target to look for molecular signatures of past climatic events. We analysed mitochondrial DNA of specimens collected from the Antarctic continent and two Antarctic islands (AI) to infer past population processes and understand current genetic structure. Demographic history analyses suggest populations survived in refugia during the Last Glacial Maximum. The high genetic diversity found in the Antarctic Peninsula and East Antarctic (EA) seems related to multiple demographic contraction-expansion events associated with deep-sea refugia, while the low genetic diversity in the Weddell Sea points to a more recent expansion from a shelf refugium. We suggest the genetic structure of N. australe from AI reflects recent colonization from the continent. At a local level, EA populations reveal generally low genetic differentiation, geographically and bathymetrically, suggesting limited restrictions to dispersal. Results highlight regional differences in demographic histories and how these relate to the variation in intensity of glaciation-deglaciation events around Antarctica, critical for the study of local evolutionary processes. These are valuable data for understanding the remarkable success of Antarctic pycnogonids, and how environmental changes have shaped the evolution and diversification of Southern Ocean benthic biodiversity.Progress Code: completedStatement: See the publication for full details.&rft.creator=Soler-Membrives, A., Miller, K.J., Linse, K. and Arango, C. &rft.creator=SOLER-MEMBRIVES, ANNA &rft.creator=MILLER, KAREN J. &rft.creator=LINSE, KATRIN &rft.creator=ARANGO, CLAUDIA &rft.date=2017&rft.coverage=westlimit=-178; southlimit=-70; eastlimit=1; northlimit=-60&rft.coverage=westlimit=-178; southlimit=-70; eastlimit=1; northlimit=-60&rft_rights=These data are publicly available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3010_Sea_Spiders_Genetics when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=biota&rft_subject=oceans&rft_subject=EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS&rft_subject=EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CHELICERATES&rft_subject=EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > BIOLOGICAL RECORDS&rft_subject=GENETICS&rft_subject=DNA&rft_subject=NYMPHON AUSTRALE&rft_subject=PYCNOGONIDS&rft_subject=SEA SPIDERS&rft_subject=NETS > NETS&rft_subject=ADS > Automated DNA Sequencer&rft_subject=FIELD INVESTIGATION&rft_subject=FIELD SURVEYS&rft_subject=AMD&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=OCEAN > SOUTHERN OCEAN&rft_subject=OCEAN > SOUTHERN OCEAN > ROSS SEA&rft_subject=CONTINENT > ANTARCTICA&rft_subject=OCEAN > SOUTHERN OCEAN > WEDDELL SEA&rft_subject=OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > SOUTH SANDWICH ISLANDS&rft_subject=OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > BOUVET ISLAND&rft.type=dataset&rft.language=English Access the data
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Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

These data are publicly available for download from the provided URL.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3010_Sea_Spiders_Genetics when using these data.

This metadata record is publicly available.

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Metadata record for data collected as part of Australian Antarctic Science project 3010 in the Australian Antarctic program.

From the abstract of the referenced paper:

The evolutionary history of Antarctic organisms is becoming increasingly important to understand and manage population trajectories under rapid environmental change. The Antarctic sea spider Nymphon australe, with an apparently large population size compared with other sea spider species, is an ideal target to look for molecular signatures of past climatic events. We analysed mitochondrial DNA of specimens collected from the Antarctic continent and two Antarctic islands (AI) to infer past population processes and understand current genetic structure. Demographic history analyses suggest populations survived in refugia during the Last Glacial Maximum. The high genetic diversity found in the Antarctic Peninsula and East Antarctic (EA) seems related to multiple demographic contraction-expansion events associated with deep-sea refugia, while the low genetic diversity in the Weddell Sea points to a more recent expansion from a shelf refugium. We suggest the genetic structure of N. australe from AI reflects recent colonization from the continent. At a local level, EA populations reveal generally low genetic differentiation, geographically and bathymetrically, suggesting limited restrictions to dispersal. Results highlight regional differences in demographic histories and how these relate to the variation in intensity of glaciation-deglaciation events around Antarctica, critical for the study of local evolutionary processes. These are valuable data for understanding the remarkable success of Antarctic pycnogonids, and how environmental changes have shaped the evolution and diversification of Southern Ocean benthic biodiversity.

Lineage

Progress Code: completed
Statement: See the publication for full details.

Data time period: 2007-01-01 to 2011-12-31

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1,-60 1,-70 -178,-70 -178,-60 1,-60

-88.5,-65

text: westlimit=-178; southlimit=-70; eastlimit=1; northlimit=-60

Subjects
ADS > Automated DNA Sequencer | AMD | AMD/AU | CEOS | CONTINENT > ANTARCTICA | DNA | EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CHELICERATES | EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS | EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > BIOLOGICAL RECORDS | FIELD INVESTIGATION | FIELD SURVEYS | GENETICS | GEOGRAPHIC REGION > POLAR | NETS > NETS | NYMPHON AUSTRALE | OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > BOUVET ISLAND | OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > SOUTH SANDWICH ISLANDS | OCEAN > SOUTHERN OCEAN | OCEAN > SOUTHERN OCEAN > ROSS SEA | OCEAN > SOUTHERN OCEAN > WEDDELL SEA | PYCNOGONIDS | SEA SPIDERS | biota | oceans |

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Other Information
Download point for the data (GET DATA > DIRECT DOWNLOAD)

uri : https://data.aad.gov.au/eds/4533/download

Public information for AAS project AAS_3010 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/report_project_public.cfm?project_no=AAS_3010

Citation reference for this metadata record and dataset. (VIEW RELATED INFORMATION)

uri : https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3010_Sea_Spiders_Genetics

Identifiers
  • global : AAS_3010_Sea_Spiders_Genetics