Sundstroemia pungens Medlin, Lundholm, Boonprakob & Moestrup
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
Sundstroemia pungens (A. Cleve) Medlin, Lundholm, Boonprakob & Moestrup
Rhizosolenia pungens Cleve-Euler (1937): 43, fig. 10 — Hasle and Syvertsen (1997): 157; Bérard-Therriault et al. (1987); Bérard-Therriault et al. (1999): 37, pl. 21 g, m; Hoppenrath et al. (2009): 63, fig. 27 a – c; Yun and Lee (2011): 142 –145: fig. 1 A – F.
Sundstroemia pungens — Medlin et al. (2021): 242; Boonprakob et al. (2021): 162 –164, figs. 106–118; Guiry and Guiry (2025).
Description
Cells solitary and narrow, diameter 16.0 (4–20) µm, length up to 213.2 (150–589) µm without processes, process length (85–276) μm. Valves conical. External processes long, almost straight and needle-like. Basal part of process narrow, abruptly swollen for about half its length, narrow again and gently tapering towards tip. Otarium absent. Girdle composed of segments in two dorsiventral columns. Numerous chloroplasts.
Diagnosis
Very similar in morphology to Sundstroemia setigera. However, the narrow basal section, then a swollen zone of the process in S. pungens (seen in LM and SEM), differentiates it from S. setigera, which has a long and continuously shaped narrow process.
Notes
Sundstroemia pungens is found in the plankton throughout most of the year, but more frequently observed in the Trincomali Channel and Porlier Pass in September and October. A small bloom of S. setigera occurred at SHW on 21 July 2025. iNaturalist ID: 259931970, 315872333. Mol. data: SRS 969492, SRS 966492 (Fig. 36).
Notes
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Linked records
Additional details
Identifiers
Related works
- 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/8DF4447DA0715363A2416459261C4708 (URL)
Biodiversity
- Scientific name authorship
- Medlin, Lundholm, Boonprakob & Moestrup
- Kingdom
- Chromista
- Phylum
- Ochrophyta
- Order
- Rhizosoleniales
- Family
- Rhizosoleniaceae
- Genus
- Sundstroemia
- Species
- pungens
- Taxon rank
- species
References
- Cleve-Euler A. 1937 Undersökningar över Öresund: Sundets plankton. 1. Sammansättning och fördelning Lunds Universitets Arsskrift 33 9 1 51
- Hasle G. R., Syvertsen E. E. 1997 Marine diatoms Thomas C. R. Identifying marine phytoplankton Academic Press San Diego, USA 874 10.17031/1629
- Bérard-Therriault Louise, Cardinal André, Poulin Monique 1987 Les diatomées (Bacillariophyceae) benthiques de substrats durs des eaux marines et saumâtres du Québec. 8. Centrales Le Naturaliste Canadien 114 81 103
- Bérard-Therriault Louise, Poulin Monique, Bossé Louise 1999 Guide d'identification du phytoplancton marin de l'estuaire et du Golfe du Saint-Laurent incluant également certains protozoaires. Publication spéciale canadienne des sciences halieutiques et aquatiques 128 National Research Council Canada Ottawa, Canada 387
- Hoppenrath M., Elbrachter M., Drebes G. 2009 Marine phytoplankton. Selected microphytoplankton species from the North Sea around Helgoland and Sylt Schweizerbart Science Publishers Stuttgart, Germany 264
- Yun S. M., Lee J. H. 2011 Morphology and distribution of some marine diatoms, family Rhizosoleniaceae, genus Proboscia, Neocalyptrella, Pseudosolenia, Guinardia, and Dactyliosolen in Korean coastal waters Algae 26 4 299 315 10.4490/algae.2011.26.4.299
- Medlin L. K., Boonprakob A., Lundholm N., Moestrup Ø. 2021 On the morphology and phylogeny of the diatom species Rhizosolenia setigera: comparison of the type material to modern cultured strains, and a taxonomic revision Nova Hedwigia, Beiheft 151 223 247 10.1127/nova-suppl/2021/223
- Boonprakob Anusara, Lundholm Nina, Medlin L. K., Moestrup Øjvind 2021 The morphology and phylogeny of the diatom genera Rhizosolenia, Proboscia, Pseudosolenia and Neocalyptrella from the Gulf of Thailand and the Andaman Sea Diatom Research 36 3 143 184 10.1080/0269249X.2021.1957719
- Guiry M. D., Guiry G. M. AlgalBase https://www.algaebase.org2025-10-20T00:46:21+00:00