Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans
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 accu...
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ftreroch:oai:doc.rero.ch:321230 2023-05-15T13:54:45+02:00 Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans Pawlowski, Jan Majewski, Wojciech Longet, David Guiard, Jackie Cedhagen, Tomas Gooday, Andrew Korsun, Sergey Habura, Andrea Bowser, Samuel 2018-06-18T17:58:32Z http://doc.rero.ch/record/321230/files/300_2008_Article_459.pdf eng eng http://doc.rero.ch/record/321230/files/300_2008_Article_459.pdf 2018 ftreroch 2023-02-16T17:32:34Z 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 Other/Unknown Material Antarc* Antarctic Arctic Arctic Ocean Foraminifera* McMurdo Sound Svalbard Weddell Sea RERO DOC Digital Library Arctic Antarctic Arctic Ocean Svalbard Weddell Sea McMurdo Sound Weddell |
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English |
description |
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 |
author |
Pawlowski, Jan Majewski, Wojciech Longet, David Guiard, Jackie Cedhagen, Tomas Gooday, Andrew Korsun, Sergey Habura, Andrea Bowser, Samuel |
spellingShingle |
Pawlowski, Jan Majewski, Wojciech Longet, David Guiard, Jackie Cedhagen, Tomas Gooday, Andrew Korsun, Sergey Habura, Andrea Bowser, Samuel Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans |
author_facet |
Pawlowski, Jan Majewski, Wojciech Longet, David Guiard, Jackie Cedhagen, Tomas Gooday, Andrew Korsun, Sergey Habura, Andrea Bowser, Samuel |
author_sort |
Pawlowski, Jan |
title |
Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_short |
Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_full |
Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_fullStr |
Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_full_unstemmed |
Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans |
title_sort |
genetic differentiation between arctic and antarctic monothalamous foraminiferans |
publishDate |
2018 |
url |
http://doc.rero.ch/record/321230/files/300_2008_Article_459.pdf |
geographic |
Arctic Antarctic Arctic Ocean Svalbard Weddell Sea McMurdo Sound Weddell |
geographic_facet |
Arctic Antarctic Arctic Ocean Svalbard Weddell Sea McMurdo Sound Weddell |
genre |
Antarc* Antarctic Arctic Arctic Ocean Foraminifera* McMurdo Sound Svalbard Weddell Sea |
genre_facet |
Antarc* Antarctic Arctic Arctic Ocean Foraminifera* McMurdo Sound Svalbard Weddell Sea |
op_relation |
http://doc.rero.ch/record/321230/files/300_2008_Article_459.pdf |
_version_ |
1766260840428732416 |