Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans
Monothalamous (single-chambered) foraminifers are a major component of the benthic meiofauna in high lati- tude regions. Several morphologically similar species are common in the Arctic and Antarctic. However, it is uncertain whether these morphospecies are genetically identical, or whether their ac...
Published in: | Polar Biology |
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Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2008
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Online Access: | https://pure.au.dk/portal/da/publications/genetics-differentiation-between-arctic-and-antarctic-monothalamous-foraminiferans(3e6d8390-aa6b-11dd-889c-000ea68e967b).html https://doi.org/10.1007/s00300-008-0459-3 |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
Monothalamous (single-chambered) foraminifers are a major component of the benthic meiofauna in high lati- tude regions. Several morphologically similar species are common in the Arctic and Antarctic. However, it is uncertain whether these morphospecies are genetically identical, or whether their accurate identiWcation is compromised by a lack of distinctive morphological features. To determine the rela- tionship between Arctic and Antarctic species, we have com- pared SSU rDNA sequences of specimens belonging to four morphotaxa: Micrometula, Psammophaga, Gloiogullmia, and one morphospecies Hippocrepinella hirudinea from western Svalbard (Arctic) and McMurdo Sound (Antarctic). Wherever possible, we include in our analyses representatives of these taxa from the deep Arctic and Southern Oceans, as well as from Northern European fjords. We found that in all cases, the bipolar populations were clearly distinct genetically. As expected, Arctic specimens were usually more closely related to those from Northern Europe than to their Antarctic repre- sentatives. The deep-sea specimens from Weddell Sea branched as a sister to the McMurdo Sound population, while those from the Arctic Ocean clustered with ones from Norwe- gian fjords. Our study has revealed a high number of cryptic species within each of the examined genera, and demonstrates the unexplored potential of monothalamous foraminifers for use as a tool to evaluate the origin and biogeography of polar meiofauna. Monothalamous (single-chambered) foraminifers are a major component of the benthic meiofauna in high latitude regions. Several morphologically similar species are common in the Arctic and Antarctic. However, it is uncertain whether these morphospecies are genetically identical, or whether their accurate identification is compromised by a lack of distinctive morphological features. To determine the relationship between Arctic and Antarctic species, we have compared SSU rDNA sequences of specimens belonging to four morphotaxa: Micrometula , Psammophaga , Gloiogullmia , and one morphospecies Hippocrepinella hirudinea from western Svalbard (Arctic) and McMurdo Sound (Antarctic). Wherever possible, we include in our analyses representatives of these taxa from the deep Arctic and Southern Oceans, as well as from Northern European fjords. We found that in all cases, the bipolar populations were clearly distinct genetically. As expected, Arctic specimens were usually more closely related to those from Northern Europe than to their Antarctic representatives. The deep-sea specimens from Weddell Sea branched as a sister to the McMurdo Sound population, while those from the Arctic Ocean clustered with ones from Norwegian fjords. Our study has revealed a high number of cryptic species within each of the examined genera, and demonstrates the unexplored potential of monothalamous foraminifers for use as a tool to evaluate the origin and biogeography of polar meiofauna. |
format |
Article in Journal/Newspaper |
author |
Pawlowski, Jan Majewski, Wojciech Longet, David Guiard, Jackie Cedhagen, Tomas Gooday, Andrew J. Korsun, Sergey Habura, Andrea A. Bowser, Samuel S. |
spellingShingle |
Pawlowski, Jan Majewski, Wojciech Longet, David Guiard, Jackie Cedhagen, Tomas Gooday, Andrew J. Korsun, Sergey Habura, Andrea A. Bowser, Samuel S. Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans |
author_facet |
Pawlowski, Jan Majewski, Wojciech Longet, David Guiard, Jackie Cedhagen, Tomas Gooday, Andrew J. Korsun, Sergey Habura, Andrea A. Bowser, Samuel S. |
author_sort |
Pawlowski, Jan |
title |
Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_short |
Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_full |
Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_fullStr |
Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_full_unstemmed |
Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_sort |
genetics differentiation between arctic and antarctic monothalamous foraminiferans |
publishDate |
2008 |
url |
https://pure.au.dk/portal/da/publications/genetics-differentiation-between-arctic-and-antarctic-monothalamous-foraminiferans(3e6d8390-aa6b-11dd-889c-000ea68e967b).html https://doi.org/10.1007/s00300-008-0459-3 |
geographic |
Antarctic Arctic Arctic Ocean McMurdo Sound Svalbard Weddell Weddell Sea |
geographic_facet |
Antarctic Arctic Arctic Ocean McMurdo Sound Svalbard Weddell Weddell Sea |
genre |
Antarc* Antarctic Arctic Arctic Arctic Ocean Foraminifera* McMurdo Sound Polar Biology Svalbard Weddell Sea |
genre_facet |
Antarc* Antarctic Arctic Arctic Arctic Ocean Foraminifera* McMurdo Sound Polar Biology Svalbard Weddell Sea |
op_source |
Pawlowski , J , Majewski , W , Longet , D , Guiard , J , Cedhagen , T , Gooday , A J , Korsun , S , Habura , A A & Bowser , S S 2008 , ' Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans ' , Polar Biology , vol. 31 , pp. 1205-1216 . https://doi.org/10.1007/s00300-008-0459-3 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00300-008-0459-3 |
container_title |
Polar Biology |
container_volume |
31 |
container_issue |
10 |
container_start_page |
1205 |
op_container_end_page |
1216 |
_version_ |
1766271925403779072 |
spelling |
ftuniaarhuspubl:oai:pure.atira.dk:publications/3e6d8390-aa6b-11dd-889c-000ea68e967b 2023-05-15T14:01:52+02:00 Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans Pawlowski, Jan Majewski, Wojciech Longet, David Guiard, Jackie Cedhagen, Tomas Gooday, Andrew J. Korsun, Sergey Habura, Andrea A. Bowser, Samuel S. 2008 https://pure.au.dk/portal/da/publications/genetics-differentiation-between-arctic-and-antarctic-monothalamous-foraminiferans(3e6d8390-aa6b-11dd-889c-000ea68e967b).html https://doi.org/10.1007/s00300-008-0459-3 eng eng info:eu-repo/semantics/restrictedAccess Pawlowski , J , Majewski , W , Longet , D , Guiard , J , Cedhagen , T , Gooday , A J , Korsun , S , Habura , A A & Bowser , S S 2008 , ' Genetics differentiation between Arctic and Antarctic monothalamous foraminiferans ' , Polar Biology , vol. 31 , pp. 1205-1216 . https://doi.org/10.1007/s00300-008-0459-3 article 2008 ftuniaarhuspubl https://doi.org/10.1007/s00300-008-0459-3 2020-07-18T20:53:34Z Monothalamous (single-chambered) foraminifers are a major component of the benthic meiofauna in high lati- tude regions. Several morphologically similar species are common in the Arctic and Antarctic. However, it is uncertain whether these morphospecies are genetically identical, or whether their accurate identiWcation is compromised by a lack of distinctive morphological features. To determine the rela- tionship between Arctic and Antarctic species, we have com- pared SSU rDNA sequences of specimens belonging to four morphotaxa: Micrometula, Psammophaga, Gloiogullmia, and one morphospecies Hippocrepinella hirudinea from western Svalbard (Arctic) and McMurdo Sound (Antarctic). Wherever possible, we include in our analyses representatives of these taxa from the deep Arctic and Southern Oceans, as well as from Northern European fjords. We found that in all cases, the bipolar populations were clearly distinct genetically. As expected, Arctic specimens were usually more closely related to those from Northern Europe than to their Antarctic repre- sentatives. The deep-sea specimens from Weddell Sea branched as a sister to the McMurdo Sound population, while those from the Arctic Ocean clustered with ones from Norwe- gian fjords. Our study has revealed a high number of cryptic species within each of the examined genera, and demonstrates the unexplored potential of monothalamous foraminifers for use as a tool to evaluate the origin and biogeography of polar meiofauna. Monothalamous (single-chambered) foraminifers are a major component of the benthic meiofauna in high latitude regions. Several morphologically similar species are common in the Arctic and Antarctic. However, it is uncertain whether these morphospecies are genetically identical, or whether their accurate identification is compromised by a lack of distinctive morphological features. To determine the relationship between Arctic and Antarctic species, we have compared SSU rDNA sequences of specimens belonging to four morphotaxa: Micrometula , Psammophaga , Gloiogullmia , and one morphospecies Hippocrepinella hirudinea from western Svalbard (Arctic) and McMurdo Sound (Antarctic). Wherever possible, we include in our analyses representatives of these taxa from the deep Arctic and Southern Oceans, as well as from Northern European fjords. We found that in all cases, the bipolar populations were clearly distinct genetically. As expected, Arctic specimens were usually more closely related to those from Northern Europe than to their Antarctic representatives. The deep-sea specimens from Weddell Sea branched as a sister to the McMurdo Sound population, while those from the Arctic Ocean clustered with ones from Norwegian fjords. Our study has revealed a high number of cryptic species within each of the examined genera, and demonstrates the unexplored potential of monothalamous foraminifers for use as a tool to evaluate the origin and biogeography of polar meiofauna. Article in Journal/Newspaper Antarc* Antarctic Arctic Arctic Arctic Ocean Foraminifera* McMurdo Sound Polar Biology Svalbard Weddell Sea Aarhus University: Research Antarctic Arctic Arctic Ocean McMurdo Sound Svalbard Weddell Weddell Sea Polar Biology 31 10 1205 1216 |