Shionodiscus frenguelliopsis Alverson, Kang & Theriot
Authors/Creators
- 1. Institute for Multidisciplinary Ecological Research in the Salish Sea, Galiano Island, Canada & Advanced Microscopy Facility, Bob Wright Centre, University of Victoria, Victoria, Canada
- 2. Institute for Multidisciplinary Ecological Research in the Salish Sea, Galiano Island, Canada
- 3. Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, Canada
- 4. Hakai Institute, Heriot Bay, Canada & Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, Canada
- 5. University of Alberta, Edmonton, Canada & Institute for Multidisciplinary Ecological Research in the Salish Sea, Galiano Island, Canada
Description
Shionodiscus frenguelliopsis (Fryxell & Johansen) Alverson, Kang & Theriot
Thalassiosira frenguelliopsis Johansen and Fryxell (1985): 168, figs. 6, 67, 68, 71, 81 — Sar et al. (2002): 378, 379, figs. 2–6, table 3; Guiry and Guiry (2025).
Shionodiscus frenguelliopsis — Alverson et al. (2006): 259; Wilks and Armand (2017): tables 2, 11.
Description
Valves circular and flat, diameter 18.2 (12–34) μm, no external projections of processes. Areolae pattern on valve face irregularly eccentric to irregularly linear. Striae 28–30 (24–30) in 10 µm, areolae 20–22 (12–26) in 10 µm from centre towards mantle and 24 (18–20) near mantle. One (1) sub-central fultoportula off-centre and operculate. Rimoportula is between margin and centre, transverse (radial), 6–7 (5.8–8) areolae from the sub-central process. Ten MFPs are long and extend out internally, 3 in 10 µm, 10–11 areolae between MFPs, 4.1–5.5 (5–10) µm apart.
Notes
The morphometric data of this specimen are sufficient to place it as S. frenguelliopsis. iNaturalist ID: 301822368 (Fig. 33).
Notes
Files
Files
(1.5 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:65a6b6a79ecc6719dbb1ca289cf1fe8f
|
1.5 kB | Download |
System files
(11.0 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:932c1d44668d137cb125b99dcafd7104
|
11.0 kB | Download |
Linked records
Additional details
Identifiers
Related works
- Cites
- Figure: https://binary.pensoft.net/fig/1525919 (URL)
- Is part of
- Journal article: 10.3897/BDJ.14.e189060 (DOI)
- Journal article: http://publication.plazi.org/id/7EEC96E29628567F973BC24E243B2259 (URL)
- Is source of
- https://biodiversitypmc.sibils.org/collections/plazi/1C136809A71352A492CBD45CEA0D6D49 (URL)
Biodiversity
- Scientific name authorship
- Alverson, Kang & Theriot
- Kingdom
- Chromista
- Phylum
- Ochrophyta
- Order
- Thalassiosirales
- Family
- Thalassiosiraceae
- Genus
- Shionodiscus
- Species
- frenguelliopsis
- Taxon rank
- species
References
- Johansen J. R., Fryxell G. A. 1985 The genus Thalassiosira (Bacillariophyceae): studies on species occurring south of the Antarctic Convergence Zone Phycologia 24 2 155 179 10.2216/i0031-8884-24-2-155.1
- Sar E. A., Sunesen I., Lavigne A. S. 2002 The diatom genus Thalassiosira: species from the northern San Matias Gulf (Rio Negro, Argentina) Nova Hedwigia 74 3-4 373 386 10.1127/0029-5035/2002/0074-0373
- Guiry M. D., Guiry G. M. AlgalBase https://www.algaebase.org2025-10-20T00:46:21+00:00
- Alverson A. J., Kang S. H., Theriot E. C. 2006 Cell wall morphology and systematic importance of Thalassiosira ritscheri, with a description of Shionodiscus gen. nov Diatom Research 21 2 215 262 10.1080/0269249X.2006.9705667
- Wilks J. V., Armand L. K. 2017 Diversity and taxonomic identification of Shionodiscus spp. in the Australian sector of the Subantarctic Zone Diatom Research 32 3 295 307 10.1080/0269249X.2017.1365015