Cocconeis dirupta var. dirupta Gregory
10. Cocconeis dirupta var. dirupta Gregory (Figs 27–32, 95) Basionym: Gregory 1857, p. 491(19), pl. IX(1), fig. 25. References: Hustedt 1933, p. 354, figs 809a–c; Kobayasi & Nagumo 1985, p. 99, pl. 2. figs 16–27; Witkowski et al. 2000, p. 105, pl. 39, figs 1–5; Riaux-Gobin et al. 2011, p. 26, pl...
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DataCite Metadata Store (German National Library of Science and Technology) |
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unknown |
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Biodiversity Taxonomy Chromista Bacillariophyta Bacillariophyceae Achnanthales Cocconeidaceae Cocconeis Cocconeis dirupta Cocconeis dirupta var. dirupta gregory |
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Biodiversity Taxonomy Chromista Bacillariophyta Bacillariophyceae Achnanthales Cocconeidaceae Cocconeis Cocconeis dirupta Cocconeis dirupta var. dirupta gregory Joh, Gyeongje Cocconeis dirupta var. dirupta Gregory |
topic_facet |
Biodiversity Taxonomy Chromista Bacillariophyta Bacillariophyceae Achnanthales Cocconeidaceae Cocconeis Cocconeis dirupta Cocconeis dirupta var. dirupta gregory |
description |
10. Cocconeis dirupta var. dirupta Gregory (Figs 27–32, 95) Basionym: Gregory 1857, p. 491(19), pl. IX(1), fig. 25. References: Hustedt 1933, p. 354, figs 809a–c; Kobayasi & Nagumo 1985, p. 99, pl. 2. figs 16–27; Witkowski et al. 2000, p. 105, pl. 39, figs 1–5; Riaux-Gobin et al. 2011, p. 26, pl. 3, figs 9–11, pl. 41, figs 1–6; Lobban et al. 2012, p. 286, pl. 40, figs 1–3; Riaux-Gobin et al. 2016, p. 11, figs 4, 35–38 Description: Valves broadly elliptical, 9–23 μm long, 5–14 μm wide. SV: sternum narrow to broadly lanceolate, fusiform, sometimes slightly retracted in the middle. Transapical striae radiate, crossed by hyaline and longitudinal rows, 15–22 in 10 μm, one median stria often shorter on one or both side of the central area. RV: raphe slightly sigmoid. Sternum narrow and straight. Central area not developed or extended as transversely narrrow fascia, not reaching to the margins. Transapical striae radiate, 24–28 in 10 μm. Remarks: The specimens described herein have valve outlines that are more elliptical rather than round-elliptical to discoid, as described for the lectotype designated by Riaux-Gobin et al. (2016). C. dirupta is distinguished from C. dirupta var. flexella by the straight axial area in the SV. In the literature, Cocconeis dirupta corresponds to two forms: one having large valves with a wide sternum (Kobayasi & Nagumo 1985, Riaux-Gobin et al. 2016) and the other having valves with a strong retraction in the middle of the sternum (Witkowski et al. 2000, Lobban et al. 2012). This species has a wide range in length and width dimensions, and both forms were found in the present study. The identifications were conducted according to the large forms designated by Hustedt (1933), and the small retracted forms by Lobban et al. (2012). The retracted forms collected in local areas have smaller dimensions, 9–17 μm long and 5–9 μm wide. In the smaller forms, transapical striae are abruptly denser at apices. This taxon was reportedly common along oceanic coasts (Witkowski et al. 2000), and in tropical coasts (Riaux-Gobin et al. 2011, Lobban et al. 2012). Here, frequent on seaweeds of the Seogwipo coast of South Korea. : Published as part of Joh, Gyeongje, 2021, Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea, pp. 149-179 in Phytotaxa 528 (3) on page 157, DOI: 10.11646/phytotaxa.528.3.1, http://zenodo.org/record/5788071 : {"references": ["Gregory, W. (1857) On new forms of marine Diatomaceae found in the Firth of Clyde and in Loch Fyne, illustrated by numerous figures drawn by K. K. Greville, LL. D., F. R. S. E. Transactions of the Royal Society of Edinburgh 21: 473 - 542, pls. 9 - 14.", "Hustedt, F. (1933) Die Kieselalgen Deutschlands, Osterreichs und der Schweiz unter Berucksichtigung der ubrigen Lander Europas sowie der angrenzenden Meeresgebiete. In: Rabenhorst, L. (Ed.) Kryptogamen Flora von Deutschland, Osterreich und der Schweiz. Akademische Verlagsgesellschaft m. b. h. Leipzig 7 (Teil 2, Lief. 3): 321 - 432, figs 781 - 880.", "Kobayasi, H. & Nagumo, T. (1985) Observations on the valve structure of marine species of the diatom genus Cocconeis Ehr. Hydrobiologia 127: 97 - 103. https: // doi. org / 10.1007 / BF 00004189", "Witkowski, A., Lange-Bertalot, H. & Metzeltin, D. (2000) Diatom flora of marine coasts I. Iconographia Diatomologica Vol. 7. A. R. G. Ganter Verlag K. G., Ruggell. 925 pp.", "Riaux-Gobin, C., Compere, P. & Al-Handal, A. Y. (2011) Species of the Cocconeis peltoides group with a marginal row of unusual processes (Mascarenes and Kerguelen Islands, Indian Ocean). Diatom Research 26: 325 - 338. https: // doi. org / 10.1080 / 0269249 X. 2011.639559", "Lobban, C. S., Schefter, M., Jordan, R. W., Arai, Y., Sasaki, A., Theriot, E. C., Ashworth, M., Ruck, E. C. & Pennesi, C. (2012) Coral-reef diatoms (Bacillariophyta) from Guam: new records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories. Micronesica 43: 237 - 479.", "Riaux-Gobin, C., Compere, P., Jordan, R. W., Coste, M. & Yesilyurt, J. C. (2016) Cocconeis molesta Kutz., C. diaphana W. Sm. and C. dirupta W. Greg. (Bacillariophyta): type material, ambiguities and possible synonymies. European Journal of Taxonomy 204: 1 - 18. https: // doi. org / 10.5852 / ejt. 2016.204"]} |
format |
Text |
author |
Joh, Gyeongje |
author_facet |
Joh, Gyeongje |
author_sort |
Joh, Gyeongje |
title |
Cocconeis dirupta var. dirupta Gregory |
title_short |
Cocconeis dirupta var. dirupta Gregory |
title_full |
Cocconeis dirupta var. dirupta Gregory |
title_fullStr |
Cocconeis dirupta var. dirupta Gregory |
title_full_unstemmed |
Cocconeis dirupta var. dirupta Gregory |
title_sort |
cocconeis dirupta var. dirupta gregory |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://dx.doi.org/10.5281/zenodo.5788110 https://zenodo.org/record/5788110 |
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ENVELOPE(163.083,163.083,-70.933,-70.933) ENVELOPE(-21.783,-21.783,73.833,73.833) |
geographic |
Kerguelen Kerguelen Islands Indian Ashworth Loch Fyne |
geographic_facet |
Kerguelen Kerguelen Islands Indian Ashworth Loch Fyne |
genre |
Kerguelen Islands |
genre_facet |
Kerguelen Islands |
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Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.5788110 https://doi.org/10.11646/phytotaxa.528.3.1 https://doi.org/10.5281/zenodo.5788083 https://doi.org/10.5281/zenodo.5788109 https://doi.org/10.5281/zenodo.5788111 |
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ftdatacite:10.5281/zenodo.5788110 2023-05-15T17:02:10+02:00 Cocconeis dirupta var. dirupta Gregory Joh, Gyeongje 2021 https://dx.doi.org/10.5281/zenodo.5788110 https://zenodo.org/record/5788110 unknown Zenodo http://zenodo.org/record/5788071 http://publication.plazi.org/id/2C5F416CFF8AFFEF1B1DFFF3FFA0952B https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/phytotaxa.528.3.1 http://zenodo.org/record/5788071 http://publication.plazi.org/id/2C5F416CFF8AFFEF1B1DFFF3FFA0952B https://dx.doi.org/10.5281/zenodo.5788083 https://dx.doi.org/10.5281/zenodo.5788109 https://dx.doi.org/10.5281/zenodo.5788111 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Chromista Bacillariophyta Bacillariophyceae Achnanthales Cocconeidaceae Cocconeis Cocconeis dirupta Cocconeis dirupta var. dirupta gregory Taxonomic treatment article-journal Text ScholarlyArticle 2021 ftdatacite https://doi.org/10.5281/zenodo.5788110 https://doi.org/10.11646/phytotaxa.528.3.1 https://doi.org/10.5281/zenodo.5788083 https://doi.org/10.5281/zenodo.5788109 https://doi.org/10.5281/zenodo.5788111 2022-02-08T17:44:38Z 10. Cocconeis dirupta var. dirupta Gregory (Figs 27–32, 95) Basionym: Gregory 1857, p. 491(19), pl. IX(1), fig. 25. References: Hustedt 1933, p. 354, figs 809a–c; Kobayasi & Nagumo 1985, p. 99, pl. 2. figs 16–27; Witkowski et al. 2000, p. 105, pl. 39, figs 1–5; Riaux-Gobin et al. 2011, p. 26, pl. 3, figs 9–11, pl. 41, figs 1–6; Lobban et al. 2012, p. 286, pl. 40, figs 1–3; Riaux-Gobin et al. 2016, p. 11, figs 4, 35–38 Description: Valves broadly elliptical, 9–23 μm long, 5–14 μm wide. SV: sternum narrow to broadly lanceolate, fusiform, sometimes slightly retracted in the middle. Transapical striae radiate, crossed by hyaline and longitudinal rows, 15–22 in 10 μm, one median stria often shorter on one or both side of the central area. RV: raphe slightly sigmoid. Sternum narrow and straight. Central area not developed or extended as transversely narrrow fascia, not reaching to the margins. Transapical striae radiate, 24–28 in 10 μm. Remarks: The specimens described herein have valve outlines that are more elliptical rather than round-elliptical to discoid, as described for the lectotype designated by Riaux-Gobin et al. (2016). C. dirupta is distinguished from C. dirupta var. flexella by the straight axial area in the SV. In the literature, Cocconeis dirupta corresponds to two forms: one having large valves with a wide sternum (Kobayasi & Nagumo 1985, Riaux-Gobin et al. 2016) and the other having valves with a strong retraction in the middle of the sternum (Witkowski et al. 2000, Lobban et al. 2012). This species has a wide range in length and width dimensions, and both forms were found in the present study. The identifications were conducted according to the large forms designated by Hustedt (1933), and the small retracted forms by Lobban et al. (2012). The retracted forms collected in local areas have smaller dimensions, 9–17 μm long and 5–9 μm wide. In the smaller forms, transapical striae are abruptly denser at apices. This taxon was reportedly common along oceanic coasts (Witkowski et al. 2000), and in tropical coasts (Riaux-Gobin et al. 2011, Lobban et al. 2012). Here, frequent on seaweeds of the Seogwipo coast of South Korea. : Published as part of Joh, Gyeongje, 2021, Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea, pp. 149-179 in Phytotaxa 528 (3) on page 157, DOI: 10.11646/phytotaxa.528.3.1, http://zenodo.org/record/5788071 : {"references": ["Gregory, W. (1857) On new forms of marine Diatomaceae found in the Firth of Clyde and in Loch Fyne, illustrated by numerous figures drawn by K. K. Greville, LL. D., F. R. S. E. Transactions of the Royal Society of Edinburgh 21: 473 - 542, pls. 9 - 14.", "Hustedt, F. (1933) Die Kieselalgen Deutschlands, Osterreichs und der Schweiz unter Berucksichtigung der ubrigen Lander Europas sowie der angrenzenden Meeresgebiete. In: Rabenhorst, L. (Ed.) Kryptogamen Flora von Deutschland, Osterreich und der Schweiz. Akademische Verlagsgesellschaft m. b. h. Leipzig 7 (Teil 2, Lief. 3): 321 - 432, figs 781 - 880.", "Kobayasi, H. & Nagumo, T. (1985) Observations on the valve structure of marine species of the diatom genus Cocconeis Ehr. Hydrobiologia 127: 97 - 103. https: // doi. org / 10.1007 / BF 00004189", "Witkowski, A., Lange-Bertalot, H. & Metzeltin, D. (2000) Diatom flora of marine coasts I. Iconographia Diatomologica Vol. 7. A. R. G. Ganter Verlag K. G., Ruggell. 925 pp.", "Riaux-Gobin, C., Compere, P. & Al-Handal, A. Y. (2011) Species of the Cocconeis peltoides group with a marginal row of unusual processes (Mascarenes and Kerguelen Islands, Indian Ocean). Diatom Research 26: 325 - 338. https: // doi. org / 10.1080 / 0269249 X. 2011.639559", "Lobban, C. S., Schefter, M., Jordan, R. W., Arai, Y., Sasaki, A., Theriot, E. C., Ashworth, M., Ruck, E. C. & Pennesi, C. (2012) Coral-reef diatoms (Bacillariophyta) from Guam: new records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories. Micronesica 43: 237 - 479.", "Riaux-Gobin, C., Compere, P., Jordan, R. W., Coste, M. & Yesilyurt, J. C. (2016) Cocconeis molesta Kutz., C. diaphana W. Sm. and C. dirupta W. Greg. (Bacillariophyta): type material, ambiguities and possible synonymies. European Journal of Taxonomy 204: 1 - 18. https: // doi. org / 10.5852 / ejt. 2016.204"]} Text Kerguelen Islands DataCite Metadata Store (German National Library of Science and Technology) Kerguelen Kerguelen Islands Indian Ashworth ENVELOPE(163.083,163.083,-70.933,-70.933) Loch Fyne ENVELOPE(-21.783,-21.783,73.833,73.833) |