Cocconeis subantarctica sp. nov. from Kerguelen Archipelago (Austral Ocean) and comparison with Cocconeis stauroneiformis (W.Smith) Okuno
Abstract Cocconeis subantarctica sp. nov., a small monoraphid marine diatom, previously described as C. scutellum cf. var. parva Grunow, is reported from the Kerguelen Archipelago. Based on the careful re-examination of the material using SEM (scanning electron microscopy), both valves and the cingu...
Published in: | Oceanological and Hydrobiological Studies |
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Language: | English |
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2017
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Online Access: | http://dx.doi.org/10.1515/ohs-2017-0036 http://www.degruyter.com/view/j/ohs.2017.46.issue-3/ohs-2017-0036/ohs-2017-0036.xml https://www.degruyter.com/document/doi/10.1515/ohs-2017-0036/xml https://www.sciendo.com/pdf/10.1515/ohs-2017-0036 |
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crdegruyter:10.1515/ohs-2017-0036 2023-05-15T15:33:58+02:00 Cocconeis subantarctica sp. nov. from Kerguelen Archipelago (Austral Ocean) and comparison with Cocconeis stauroneiformis (W.Smith) Okuno Riaux-Gobin, Catherine Witkowski, Andrzej 2017 http://dx.doi.org/10.1515/ohs-2017-0036 http://www.degruyter.com/view/j/ohs.2017.46.issue-3/ohs-2017-0036/ohs-2017-0036.xml https://www.degruyter.com/document/doi/10.1515/ohs-2017-0036/xml https://www.sciendo.com/pdf/10.1515/ohs-2017-0036 en eng Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/4.0 CC-BY-NC-ND Oceanological and Hydrobiological Studies volume 46, issue 3, page 350-362 ISSN 1897-3191 Oceanography journal-article 2017 crdegruyter https://doi.org/10.1515/ohs-2017-0036 2022-05-11T14:46:16Z Abstract Cocconeis subantarctica sp. nov., a small monoraphid marine diatom, previously described as C. scutellum cf. var. parva Grunow, is reported from the Kerguelen Archipelago. Based on the careful re-examination of the material using SEM (scanning electron microscopy), both valves and the cingulum were described, which enabled a better classification of this small Subantarctic taxon. The shape of the frustule is widely rounded to subdiscoid, with uniseriate and radiate striae on both valves. The SV (sternum valve) areolae have rota-like hymenate pore occlusions, with larger marginal areolae separated by a hyaline rim. The RV (raphe valve) areolae are more complex than those of the SV, with several reniform concentric hymenate occlusions. This taxon has no real stauros, only one virga, which is larger on one side of each valve. The species is not a member of the Cocconeis scutellum ‘complex’, but is closely related to C. stauroneiformis despite several morphological differences. Article in Journal/Newspaper Austral Ocean De Gruyter (via Crossref) Austral Austral Ocean ENVELOPE(90.000,90.000,-60.000,-60.000) Kerguelen Oceanological and Hydrobiological Studies 46 3 350 362 |
institution |
Open Polar |
collection |
De Gruyter (via Crossref) |
op_collection_id |
crdegruyter |
language |
English |
topic |
Oceanography |
spellingShingle |
Oceanography Riaux-Gobin, Catherine Witkowski, Andrzej Cocconeis subantarctica sp. nov. from Kerguelen Archipelago (Austral Ocean) and comparison with Cocconeis stauroneiformis (W.Smith) Okuno |
topic_facet |
Oceanography |
description |
Abstract Cocconeis subantarctica sp. nov., a small monoraphid marine diatom, previously described as C. scutellum cf. var. parva Grunow, is reported from the Kerguelen Archipelago. Based on the careful re-examination of the material using SEM (scanning electron microscopy), both valves and the cingulum were described, which enabled a better classification of this small Subantarctic taxon. The shape of the frustule is widely rounded to subdiscoid, with uniseriate and radiate striae on both valves. The SV (sternum valve) areolae have rota-like hymenate pore occlusions, with larger marginal areolae separated by a hyaline rim. The RV (raphe valve) areolae are more complex than those of the SV, with several reniform concentric hymenate occlusions. This taxon has no real stauros, only one virga, which is larger on one side of each valve. The species is not a member of the Cocconeis scutellum ‘complex’, but is closely related to C. stauroneiformis despite several morphological differences. |
format |
Article in Journal/Newspaper |
author |
Riaux-Gobin, Catherine Witkowski, Andrzej |
author_facet |
Riaux-Gobin, Catherine Witkowski, Andrzej |
author_sort |
Riaux-Gobin, Catherine |
title |
Cocconeis subantarctica sp. nov. from Kerguelen Archipelago (Austral Ocean) and comparison with Cocconeis stauroneiformis (W.Smith) Okuno |
title_short |
Cocconeis subantarctica sp. nov. from Kerguelen Archipelago (Austral Ocean) and comparison with Cocconeis stauroneiformis (W.Smith) Okuno |
title_full |
Cocconeis subantarctica sp. nov. from Kerguelen Archipelago (Austral Ocean) and comparison with Cocconeis stauroneiformis (W.Smith) Okuno |
title_fullStr |
Cocconeis subantarctica sp. nov. from Kerguelen Archipelago (Austral Ocean) and comparison with Cocconeis stauroneiformis (W.Smith) Okuno |
title_full_unstemmed |
Cocconeis subantarctica sp. nov. from Kerguelen Archipelago (Austral Ocean) and comparison with Cocconeis stauroneiformis (W.Smith) Okuno |
title_sort |
cocconeis subantarctica sp. nov. from kerguelen archipelago (austral ocean) and comparison with cocconeis stauroneiformis (w.smith) okuno |
publisher |
Walter de Gruyter GmbH |
publishDate |
2017 |
url |
http://dx.doi.org/10.1515/ohs-2017-0036 http://www.degruyter.com/view/j/ohs.2017.46.issue-3/ohs-2017-0036/ohs-2017-0036.xml https://www.degruyter.com/document/doi/10.1515/ohs-2017-0036/xml https://www.sciendo.com/pdf/10.1515/ohs-2017-0036 |
long_lat |
ENVELOPE(90.000,90.000,-60.000,-60.000) |
geographic |
Austral Austral Ocean Kerguelen |
geographic_facet |
Austral Austral Ocean Kerguelen |
genre |
Austral Ocean |
genre_facet |
Austral Ocean |
op_source |
Oceanological and Hydrobiological Studies volume 46, issue 3, page 350-362 ISSN 1897-3191 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1515/ohs-2017-0036 |
container_title |
Oceanological and Hydrobiological Studies |
container_volume |
46 |
container_issue |
3 |
container_start_page |
350 |
op_container_end_page |
362 |
_version_ |
1766364539963572224 |