Pinnularia catenaborealis sp nov. (Bacillariophyceae), a unique chain-forming diatom species from James Ross Island and Vega Island (Maritime Antarctica)
Abstract: A recent detailed survey of the Maritime Antarctic diatom flora using a fine-grained taxonomy resulted in the description of many new species of Pinnularia in general and the section Distantes, including the P. borealis species complex, in particular. Moreover, DNA-based studies of P. bore...
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ftunivantwerpen:c:irua:140339 2024-10-06T13:43:08+00:00 Pinnularia catenaborealis sp nov. (Bacillariophyceae), a unique chain-forming diatom species from James Ross Island and Vega Island (Maritime Antarctica) Pinseel, Eveline Hejdukova, Eva Vanormelingen, Pieter Kopalova, Katerina Vyverman, Wim Van de Vijver, Bart 2017 https://hdl.handle.net/10067/1403390151162165141 eng eng info:eu-repo/semantics/altIdentifier/doi/10.2216/16-18.1 info:eu-repo/semantics/altIdentifier/isi/000390573000008 info:eu-repo/semantics/closedAccess 0031-8884 Phycologia Biology info:eu-repo/semantics/article 2017 ftunivantwerpen https://doi.org/10.2216/16-18.1 2024-09-10T04:06:37Z Abstract: A recent detailed survey of the Maritime Antarctic diatom flora using a fine-grained taxonomy resulted in the description of many new species of Pinnularia in general and the section Distantes, including the P. borealis species complex, in particular. Moreover, DNA-based studies of P. borealis revealed that many more species need to be described within this complex. During a survey of the freshwater littoral diatom flora of James Ross Island (Ulu Peninsula) and Vega Island in Maritime Antarctica, a previously unknown chain-forming species in the P. borealis species complex of section Distantes was cultured from three different localities. Molecular phylogenies based on the nuclear-encoded D1-D3 large-subunit ribosomal DNA and plastid rbcL genes revealed that all cultures belong to a distinct highly supported lineage within the P. borealis species complex. Pinnularia catenaborealis sp. nov. is characterised by the presence of small spines located on a raised, thin silica ridge that almost entirely surrounds the valve face near the valve face/mantle junction, and the presence of small silica plates near the apices. In culture, P. catenaborealis formed chains of several tens of cells and in oxidised natural material, chains up to seven frustules were observed. Pinnularia catenaborealis is described from the littoral zone of freshwater Black Lake (Ulu Peninsula, James Ross Island) and has also been observed on nearby Vega Island. Although P. borealis is generally regarded as a (semi-) terrestrial diatom complex mainly occurring in (moist) soils and mosses, P. catenaborealis was found in freshwater habitats with an alkaline pH and low conductivity. Article in Journal/Newspaper Antarc* Antarctic Antarctica James Ross Island Ross Island Vega Island IRUA - Institutional Repository van de Universiteit Antwerpen Antarctic Ross Island Ulu Peninsula ENVELOPE(-57.963,-57.963,-63.918,-63.918) Vega Island ENVELOPE(-57.500,-57.500,-63.833,-63.833) Phycologia 56 1 94 107 |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Biology |
spellingShingle |
Biology Pinseel, Eveline Hejdukova, Eva Vanormelingen, Pieter Kopalova, Katerina Vyverman, Wim Van de Vijver, Bart Pinnularia catenaborealis sp nov. (Bacillariophyceae), a unique chain-forming diatom species from James Ross Island and Vega Island (Maritime Antarctica) |
topic_facet |
Biology |
description |
Abstract: A recent detailed survey of the Maritime Antarctic diatom flora using a fine-grained taxonomy resulted in the description of many new species of Pinnularia in general and the section Distantes, including the P. borealis species complex, in particular. Moreover, DNA-based studies of P. borealis revealed that many more species need to be described within this complex. During a survey of the freshwater littoral diatom flora of James Ross Island (Ulu Peninsula) and Vega Island in Maritime Antarctica, a previously unknown chain-forming species in the P. borealis species complex of section Distantes was cultured from three different localities. Molecular phylogenies based on the nuclear-encoded D1-D3 large-subunit ribosomal DNA and plastid rbcL genes revealed that all cultures belong to a distinct highly supported lineage within the P. borealis species complex. Pinnularia catenaborealis sp. nov. is characterised by the presence of small spines located on a raised, thin silica ridge that almost entirely surrounds the valve face near the valve face/mantle junction, and the presence of small silica plates near the apices. In culture, P. catenaborealis formed chains of several tens of cells and in oxidised natural material, chains up to seven frustules were observed. Pinnularia catenaborealis is described from the littoral zone of freshwater Black Lake (Ulu Peninsula, James Ross Island) and has also been observed on nearby Vega Island. Although P. borealis is generally regarded as a (semi-) terrestrial diatom complex mainly occurring in (moist) soils and mosses, P. catenaborealis was found in freshwater habitats with an alkaline pH and low conductivity. |
format |
Article in Journal/Newspaper |
author |
Pinseel, Eveline Hejdukova, Eva Vanormelingen, Pieter Kopalova, Katerina Vyverman, Wim Van de Vijver, Bart |
author_facet |
Pinseel, Eveline Hejdukova, Eva Vanormelingen, Pieter Kopalova, Katerina Vyverman, Wim Van de Vijver, Bart |
author_sort |
Pinseel, Eveline |
title |
Pinnularia catenaborealis sp nov. (Bacillariophyceae), a unique chain-forming diatom species from James Ross Island and Vega Island (Maritime Antarctica) |
title_short |
Pinnularia catenaborealis sp nov. (Bacillariophyceae), a unique chain-forming diatom species from James Ross Island and Vega Island (Maritime Antarctica) |
title_full |
Pinnularia catenaborealis sp nov. (Bacillariophyceae), a unique chain-forming diatom species from James Ross Island and Vega Island (Maritime Antarctica) |
title_fullStr |
Pinnularia catenaborealis sp nov. (Bacillariophyceae), a unique chain-forming diatom species from James Ross Island and Vega Island (Maritime Antarctica) |
title_full_unstemmed |
Pinnularia catenaborealis sp nov. (Bacillariophyceae), a unique chain-forming diatom species from James Ross Island and Vega Island (Maritime Antarctica) |
title_sort |
pinnularia catenaborealis sp nov. (bacillariophyceae), a unique chain-forming diatom species from james ross island and vega island (maritime antarctica) |
publishDate |
2017 |
url |
https://hdl.handle.net/10067/1403390151162165141 |
long_lat |
ENVELOPE(-57.963,-57.963,-63.918,-63.918) ENVELOPE(-57.500,-57.500,-63.833,-63.833) |
geographic |
Antarctic Ross Island Ulu Peninsula Vega Island |
geographic_facet |
Antarctic Ross Island Ulu Peninsula Vega Island |
genre |
Antarc* Antarctic Antarctica James Ross Island Ross Island Vega Island |
genre_facet |
Antarc* Antarctic Antarctica James Ross Island Ross Island Vega Island |
op_source |
0031-8884 Phycologia |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.2216/16-18.1 info:eu-repo/semantics/altIdentifier/isi/000390573000008 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.2216/16-18.1 |
container_title |
Phycologia |
container_volume |
56 |
container_issue |
1 |
container_start_page |
94 |
op_container_end_page |
107 |
_version_ |
1812179017581723648 |