Minidiscus proschkinae J. S. Park & J. H. Lee
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
Minidiscus proschkinae (Makarova) J. S. Park & J. H. Lee
Thalassiosira proschkinae Makarova et al. (1979): 922, pl. 1, figs. 1–7 — Snoeijs (1993): 113, pl. 99; Hasle and Syvertsen (1997): 84, table 14, pl. 13; Hoppenrath et al. (2007): 59, fig. 24 e.
Minidiscus proschkinae — Park et al. (2017); Li et al. (2020); Guiry and Guiry (2025).
Description
Forms chains of 2–3 cells, linked by mucilage thread extruded from central fultoportula. Cells circular with flattened valve face or slightly convex, with sharp-angled mantle. Diameter 11.7 (3–11.5) µm. Single rimoportula located on valve surface adjacent to central fultoportula, both without external tubes and with a single areola in between. Areolae in tangential rows, 30–35 (25–30) in 10 μm, at valve centre. Marginal fultoportula processes (MFPs), without external tubes, 6 (6–8) closely spaced, 5 (1.24–1.91 µm) separation, processes 2.75 in 10 µm.
Diagnosis
The external rimoportula and central fultoportula, both without external tubes and close together, the MFPs without external tubes and the unique ornamentation of the valve surface place this specimen in Minidiscus proschkinae. Our molecular data from Trincomali Channel and plankton from Miners Bay Wharf, Mayne Island, support the presence of Minidiscus proschkinae.
Notes
Previously identified in Haida Gwaii, BC, by Pienitz et al. (2003). iNaturalist ID: 260112129 (Fig. 27).
Notes
Files
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Linked records
Additional details
Identifiers
Related works
- Cites
- Figure: https://binary.pensoft.net/fig/1525889 (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/BBA59E05CB2B57CBB4ECF97D36C7A0E6 (URL)
Biodiversity
- Scientific name authorship
- J. S. Park & J. H. Lee
- Kingdom
- Chromista
- Phylum
- Ochrophyta
- Order
- Thalassiosirales
- Family
- Thalassiosiraceae
- Genus
- Minidiscus
- Species
- proschkinae
- Taxon rank
- species
References
- Makarova I. V., Genkal S. I., Kuzmin G. V. 1979 Species of the genus Thalassiosira Cl. (Bacillariophyta), found in continental water bodies of the USSR Botanicheskii Zhurnal 64 7 921 927
- Snoeijs P. 1993 Intercalibration and distribution of diatom species in the Baltic Sea, Volume 1 The Baltic Marine Biologists Publication 16 a Opulus Press Uppsala, Sweden 129
- Hasle G. R., Syvertsen E. E. 1997 Marine diatoms Thomas C. R. Identifying marine phytoplankton Academic Press San Diego, USA 874 10.17031/1629
- Hoppenrath M., Beszteri B., Drebes G., Halliger H., Van Beusekom J. E. E., Janisch S., Wiltshire K. H. 2007 Thalassiosira species (Bacillariophyceae, Thalassiosirales) in the North Sea at Helgoland (German Bight) and Sylt (North Frisian Wadden Sea) — a first approach to assessing diversity European Journal of Phycology 42 3 271 288 10.1080/09670260701352288
- Park J. S., Jung S. W., Ki J. S., Guo R., Kim H. J., Lee K. W., Lee J. H. 2017 Transfer of the small diatoms Thalassiosira proschkinae and T. spinulata to the genus Minidiscus and their taxonomic re-description PLOS One 12 9 0181980 10.1371/journal.pone.0181980
- Li Y., Guo X. H., Lundholm N. 2020 Molecular phylogeny and taxonomy of the genus Minidiscus (Bacillariophyceae), with description of Mediolabrus gen. nov Journal of Phycology 56 6 1443 1456 10.1111/jpy.13038
- Guiry M. D., Guiry G. M. AlgalBase https://www.algaebase.org2025-10-20T00:46:21+00:00
- Pienitz R., Fedje D., Poulin M. 2003 Marine and non-marine diatoms from the Haida Gwaii archipelago and surrounding coasts, Northeastern Pacific, Canada Bibliotheca Diatomologica 48 J. Cramer Stuttgart, Germany 146