Fragilaria shirshovii sp. nov.—A New Species of Araphid Diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic)
A new species, Fragilaria shirshovii sp. nov., is described on the basis of molecular and morphological investigations. Cells were isolated from the surface levels of desalinated water masses in the zone of mixing river and marine waters in the Gulf of Ob. The morphology of this species is analyzed...
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2023
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ftmdpi:oai:mdpi.com:/1424-2818/15/8/916/ 2023-09-05T13:17:13+02:00 Fragilaria shirshovii sp. nov.—A New Species of Araphid Diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic) Nikolay V. Lobus Anton M. Glushchenko Sergei I. Genkal Yevhen I. Maltsev Maxim S. Kulikovskiy agris 2023-08-07 application/pdf https://doi.org/10.3390/d15080916 EN eng Multidisciplinary Digital Publishing Institute Plant Diversity https://dx.doi.org/10.3390/d15080916 https://creativecommons.org/licenses/by/4.0/ Diversity; Volume 15; Issue 8; Pages: 916 diatoms morphology taxonomy phylogeny rbc L SSU Western Siberia Text 2023 ftmdpi https://doi.org/10.3390/d15080916 2023-08-13T23:51:50Z A new species, Fragilaria shirshovii sp. nov., is described on the basis of molecular and morphological investigations. Cells were isolated from the surface levels of desalinated water masses in the zone of mixing river and marine waters in the Gulf of Ob. The morphology of this species is analyzed with light microscopy (LM) and scanning electron microscopy (SEM). The valves of F. shirshovii sp. nov. are fusiform to almost linear. The frustules are linked together in the central part, forming double comb-shaped colonies. The axial area is narrow and linear, with a distinct rounded or rectangular fascia in the center. Ghost striae are present on the central area. Areolae are not discernible in LM. Apical pore fields are composed of small pores and closed papillary outgrowths. The lips of the rimoportula are well pronounced and the striae are uniseriate. Phylogenetic analysis based on partials 18S rRNA and rbcL genes infers the species F. shirshovii sp. nov. as a member of Fragilariaceae. The species most resembling F. shirshovii sp. nov. are F. crotonensis, F. pararumpens, F. bidens and F. perminuta. The differences between F. shirshovii sp. nov. and close taxa are discussed. This work is a pioneer investigation of Fragilariaceae taxa from the freshwater ecosystems of the Siberian Arctic using a combination of morphological and molecular tools. Text Arctic Gulf of Ob Kara Sea Siberia MDPI Open Access Publishing Arctic Kara Sea Diversity 15 8 916 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
diatoms morphology taxonomy phylogeny rbc L SSU Western Siberia |
spellingShingle |
diatoms morphology taxonomy phylogeny rbc L SSU Western Siberia Nikolay V. Lobus Anton M. Glushchenko Sergei I. Genkal Yevhen I. Maltsev Maxim S. Kulikovskiy Fragilaria shirshovii sp. nov.—A New Species of Araphid Diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic) |
topic_facet |
diatoms morphology taxonomy phylogeny rbc L SSU Western Siberia |
description |
A new species, Fragilaria shirshovii sp. nov., is described on the basis of molecular and morphological investigations. Cells were isolated from the surface levels of desalinated water masses in the zone of mixing river and marine waters in the Gulf of Ob. The morphology of this species is analyzed with light microscopy (LM) and scanning electron microscopy (SEM). The valves of F. shirshovii sp. nov. are fusiform to almost linear. The frustules are linked together in the central part, forming double comb-shaped colonies. The axial area is narrow and linear, with a distinct rounded or rectangular fascia in the center. Ghost striae are present on the central area. Areolae are not discernible in LM. Apical pore fields are composed of small pores and closed papillary outgrowths. The lips of the rimoportula are well pronounced and the striae are uniseriate. Phylogenetic analysis based on partials 18S rRNA and rbcL genes infers the species F. shirshovii sp. nov. as a member of Fragilariaceae. The species most resembling F. shirshovii sp. nov. are F. crotonensis, F. pararumpens, F. bidens and F. perminuta. The differences between F. shirshovii sp. nov. and close taxa are discussed. This work is a pioneer investigation of Fragilariaceae taxa from the freshwater ecosystems of the Siberian Arctic using a combination of morphological and molecular tools. |
format |
Text |
author |
Nikolay V. Lobus Anton M. Glushchenko Sergei I. Genkal Yevhen I. Maltsev Maxim S. Kulikovskiy |
author_facet |
Nikolay V. Lobus Anton M. Glushchenko Sergei I. Genkal Yevhen I. Maltsev Maxim S. Kulikovskiy |
author_sort |
Nikolay V. Lobus |
title |
Fragilaria shirshovii sp. nov.—A New Species of Araphid Diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic) |
title_short |
Fragilaria shirshovii sp. nov.—A New Species of Araphid Diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic) |
title_full |
Fragilaria shirshovii sp. nov.—A New Species of Araphid Diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic) |
title_fullStr |
Fragilaria shirshovii sp. nov.—A New Species of Araphid Diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic) |
title_full_unstemmed |
Fragilaria shirshovii sp. nov.—A New Species of Araphid Diatoms (Bacillariophyta, Fragilariophyceae) from the Gulf of Ob (Kara Sea, Arctic) |
title_sort |
fragilaria shirshovii sp. nov.—a new species of araphid diatoms (bacillariophyta, fragilariophyceae) from the gulf of ob (kara sea, arctic) |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/d15080916 |
op_coverage |
agris |
geographic |
Arctic Kara Sea |
geographic_facet |
Arctic Kara Sea |
genre |
Arctic Gulf of Ob Kara Sea Siberia |
genre_facet |
Arctic Gulf of Ob Kara Sea Siberia |
op_source |
Diversity; Volume 15; Issue 8; Pages: 916 |
op_relation |
Plant Diversity https://dx.doi.org/10.3390/d15080916 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/d15080916 |
container_title |
Diversity |
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15 |
container_issue |
8 |
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916 |
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