Population expansion of an Antarctic king crab?
© 2019, the authors. Benthic assemblages of the Antarctic continental shelf are dominated by sessile and slow-moving, epifaunal invertebrates. This community structure persists because shell-crushing (durophagous) predators are absent or ecologically insignificant in shelf habitats. Durophagous tele...
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ftlouisianastuir:oai:digitalcommons.lsu.edu:biosci_pubs-2680 2023-06-11T04:04:24+02:00 Population expansion of an Antarctic king crab? Hellberg, Michael E. Aronson, Richard B. Smith, Kathryn E. Duhon, Mark I. Ahyong, Shane T. Lovrich, Gustavo A. Thatje, Sven McClintock, James B. 2019-01-01T08:00:00Z application/pdf https://digitalcommons.lsu.edu/biosci_pubs/1681 https://doi.org/10.21425/F5FBG43165 https://digitalcommons.lsu.edu/context/biosci_pubs/article/2680/viewcontent/1681.pdf unknown LSU Digital Commons https://digitalcommons.lsu.edu/biosci_pubs/1681 doi:10.21425/F5FBG43165 https://digitalcommons.lsu.edu/context/biosci_pubs/article/2680/viewcontent/1681.pdf Faculty Publications Antarctica Deep sea Historical demography Invasive predator Marine ocean warming Polar text 2019 ftlouisianastuir https://doi.org/10.21425/F5FBG43165 2023-05-28T18:13:39Z © 2019, the authors. Benthic assemblages of the Antarctic continental shelf are dominated by sessile and slow-moving, epifaunal invertebrates. This community structure persists because shell-crushing (durophagous) predators are absent or ecologically insignificant in shelf habitats. Durophagous teleosts, elasmobranchs, and crustaceans have been excluded by cold waters over the Antarctic shelf for millions of years. Now, as shallow waters warm rapidly, predatory king crabs (Lithodidae) living in the upper bathyal zone could emerge onto the shelf and into nearshore habitats. To assess the potential for a bathymetric expansion, we genetically inferred the historical demography of a population of the most abundant durophagous predator found in deep water off the western Antarctic Peninsula: the lithodid Paralomis birsteini Macpherson. Analysis of mitochondrial DNA sequences from crabs sampled at 1200-1400 m depth on the slope off Marguerite Bay suggests this population has expanded twice over the past 132,000 years. Those expansions were possibly coincident with episodes of climatic warming in Antarctica and elsewhere, raising the possibility of a third expansion in response to anthropogenic climate change. Text Antarc* Antarctic Antarctic Peninsula Antarctica LSU Digital Commons (Louisiana State University) Antarctic The Antarctic Antarctic Peninsula Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) Macpherson ENVELOPE(155.833,155.833,-82.483,-82.483) Frontiers of Biogeography 11 3 |
institution |
Open Polar |
collection |
LSU Digital Commons (Louisiana State University) |
op_collection_id |
ftlouisianastuir |
language |
unknown |
topic |
Antarctica Deep sea Historical demography Invasive predator Marine ocean warming Polar |
spellingShingle |
Antarctica Deep sea Historical demography Invasive predator Marine ocean warming Polar Hellberg, Michael E. Aronson, Richard B. Smith, Kathryn E. Duhon, Mark I. Ahyong, Shane T. Lovrich, Gustavo A. Thatje, Sven McClintock, James B. Population expansion of an Antarctic king crab? |
topic_facet |
Antarctica Deep sea Historical demography Invasive predator Marine ocean warming Polar |
description |
© 2019, the authors. Benthic assemblages of the Antarctic continental shelf are dominated by sessile and slow-moving, epifaunal invertebrates. This community structure persists because shell-crushing (durophagous) predators are absent or ecologically insignificant in shelf habitats. Durophagous teleosts, elasmobranchs, and crustaceans have been excluded by cold waters over the Antarctic shelf for millions of years. Now, as shallow waters warm rapidly, predatory king crabs (Lithodidae) living in the upper bathyal zone could emerge onto the shelf and into nearshore habitats. To assess the potential for a bathymetric expansion, we genetically inferred the historical demography of a population of the most abundant durophagous predator found in deep water off the western Antarctic Peninsula: the lithodid Paralomis birsteini Macpherson. Analysis of mitochondrial DNA sequences from crabs sampled at 1200-1400 m depth on the slope off Marguerite Bay suggests this population has expanded twice over the past 132,000 years. Those expansions were possibly coincident with episodes of climatic warming in Antarctica and elsewhere, raising the possibility of a third expansion in response to anthropogenic climate change. |
format |
Text |
author |
Hellberg, Michael E. Aronson, Richard B. Smith, Kathryn E. Duhon, Mark I. Ahyong, Shane T. Lovrich, Gustavo A. Thatje, Sven McClintock, James B. |
author_facet |
Hellberg, Michael E. Aronson, Richard B. Smith, Kathryn E. Duhon, Mark I. Ahyong, Shane T. Lovrich, Gustavo A. Thatje, Sven McClintock, James B. |
author_sort |
Hellberg, Michael E. |
title |
Population expansion of an Antarctic king crab? |
title_short |
Population expansion of an Antarctic king crab? |
title_full |
Population expansion of an Antarctic king crab? |
title_fullStr |
Population expansion of an Antarctic king crab? |
title_full_unstemmed |
Population expansion of an Antarctic king crab? |
title_sort |
population expansion of an antarctic king crab? |
publisher |
LSU Digital Commons |
publishDate |
2019 |
url |
https://digitalcommons.lsu.edu/biosci_pubs/1681 https://doi.org/10.21425/F5FBG43165 https://digitalcommons.lsu.edu/context/biosci_pubs/article/2680/viewcontent/1681.pdf |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) ENVELOPE(155.833,155.833,-82.483,-82.483) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Marguerite Marguerite Bay Macpherson |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Marguerite Marguerite Bay Macpherson |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
Faculty Publications |
op_relation |
https://digitalcommons.lsu.edu/biosci_pubs/1681 doi:10.21425/F5FBG43165 https://digitalcommons.lsu.edu/context/biosci_pubs/article/2680/viewcontent/1681.pdf |
op_doi |
https://doi.org/10.21425/F5FBG43165 |
container_title |
Frontiers of Biogeography |
container_volume |
11 |
container_issue |
3 |
_version_ |
1768387633635917824 |