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Issue: Vol. 655 No. 1: 21 Jun. 2024
Type: Article
Published: 2024-06-21
DOI: 10.11646/phytotaxa.655.1.3
Page range: 37-53
Abstract views: 44
PDF downloaded: 1

Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica

Instituto Multidisciplinario para la Investigación y el Desarrollo Productivo y Social de la Cuenca Golfo San Jorge, CONICET - UNPSJB, Ruta Provincial 1, Km 4, 9000, Comodoro Rivadavia, Argentina. Instituto de Desarrollo Costero, Universidad Nacional de la Patagonia San Juan Bosco, Ruta Provincial 1, Km 4, 9000, Comodoro Rivadavia, Argentina.
División Ficología “Dr. Sebastián A. Guarrera”, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, B1900FWA, La Plata, Argentina.
Departamento de Biología Costera, Instituto Antártico Argentino, 25 de mayo 1143, San Martín, Buenos Aires, Argentina. Museo Argentino de Ciencias Naturales “B. Rivadavia”, Av. A. Gallardo 470, C1405DJR, Buenos Aires, Argentina.
Departamento de Biología Costera, Instituto Antártico Argentino, 25 de mayo 1143, San Martín, Buenos Aires, Argentina. Departamento de Ciencias Básicas, Universidad Nacional de Luján, Ruta 5 y Av. Constitución, CP 6700, Luján, Buenos Aires, Argentina.
División Ficología “Dr. Sebastián A. Guarrera”, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, B1900FWA, La Plata, Argentina
centric diatom new species sympagic environment taxonomy valve morphology Algae

Abstract

A new species of diatom, Orthoseira variabilis sp. nov., is described here based on snow samples collected in Potter Cove area, King George Island/Isla 25 de Mayo, Antarctica. The new taxon was characterized by using light and electron microscopy. The proposed specific epithet “variabilis” refers to the high variability in several morphological features exhibited and so far not reported in other species of the genus, such as marginal spines present or absent, areola openings surrounded by small spinules or by a complete silica ring, caverns at the valve face/mantle junction shallow or sometimes inconspicuous, and internal slits between the carinoportulae variably developed. Contrary, all characters of the girdle elements such as arrangement of poroids, presence of fimbriae and ligula, and valvocopula internal thickening are constant. The morphology of O. variabilis is compared to similar species and brief comments on the ecology of this taxon and the associated diatom flora are also presented. This is the first Orthoseira species established from Antarctica and from a sympagic environment.

References

  1. Alverson, A.J., Kang, S.-H. & Theriot, E.C. (2006) Cell wall morphology and systematic importance of Thalassiosira ritscheri (Hustedt) Hasle, with a description of Shionodiscus gen. nov. Diatom Research 21: 251–262. https://doi.org/10.1080/0269249X.2006.9705667
  2. Antoniades, D., Hamilton, P.B., Douglas, M.S. & Smol, J.P. (2008) Diatoms of North America: The freshwater floras of Prince Patrick, Ellef Ringnes and northern Ellesmere Islands from the Canadian Arctic Archipelago. Iconographia Diatomologica: Annotated Diatom Micrographs. A.R.G. Gantner Verlag K.G. 17, 649 pp.
  3. Blanco, S. (2020) Generic names of diatoms affected by ICN Art. 20.2. Notulae Algarum 139: 1–8. [https://notulaealgarum.org/2020/documents/Notulae%20algarum%20No.%20139.pdf]
  4. Cleve, P.T. & Grunow, A. (1880) Beiträge zur Kenntniss der Arctischen Diatomeen. Kongliga Svenska-Vetenskaps Akademiens Handlingar 17: 1–121.
  5. Crawford, R.M. (1981) The diatom genus Aulacoseira Thwaites: its structure and taxonomy. Phycologia 20: 174–192. https://doi.org/10.2216/i0031-8884-20-2-174.1
  6. Danz, A. & Kociolek, J.P. (2022) Four new Orthoseira Thwaites species from Maui, Hawaii, and the Columbia River Gorge, Oregon, with comments on frustular morphology in the genus. Diatom Research 37: 17–37. https://doi.org/10.1080/0269249X.2022.2044911
  7. Danz, A., Van de Vijver, B., Kochman-Kędziora, N., Kusber, W-H., Guerrero, J., Vouilloud, A.A, Sala, S.E., Liu, Q. & Kociolek, J.P. (2022) The genus Orthoseira Thwaites: historical overview, current status and recommendations for the future. Nova Hedwigia 115: 1–29. https://doi.org/10.1127/nova_hedwigia/2022/0692
  8. Ehrenberg, C.G. (1843) Verbreitung und Einfluss des mikroskopischen Lebens in Süd- und Nord-Amerika. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1841: 291–445.
  9. Ehrenberg, C.G. (1848) Über eigenthümliche auf den Bäumen des Urwaldes in Süd-Amerika zahlreich lebende mikroskopische oft kieselschalige Organismen. Bericht über die zur Bekanntmachung geeigneten Verhandlungen der Königlich-Preussischen Akademie der Wissenschaften zu Berlin 1848: 213–220.
  10. Esposito, R.M.M., Spaulding, S.A., McKnight, D.M., Van de Vijver, B., Kopalová, K., Lubinski, D., Hall, B. & Whittaker, T. (2008) Inland diatoms from the McMurdo Dry Valleys and James Ross Island, Antarctica. Botany 86: 1378–1392. https://doi.org/10.1139/B08-100
  11. Falasco, E., Bona, F., Badino, G., Hoffmann, L. & Ector, L. (2009) Diatom teratological forms and environmental alterations: a review. Hydrobiologia 623: 1–35. https://doi.org/10.1007/s10750-008-9687-3
  12. Ferrario, M.E., Sar, E.A. & Sala, S.E. (1995) Metodología básica para el estudio del fitoplancton con especial referencia a las diatomeas. In: Alveal, K., Ferrario, M.E., Oliveira, E.C. & Sar, E.A. (Eds.) Manual de métodos ficológicos. Universidad de Concepción, Concepción, pp. 1–23
  13. Frenguelli, J. (1945) XIX Contribución al conocimiento de las diatomeas argentinas. Las diatomeas del Platense. Revista del Museo de La Plata (Nueva Serie) 3 Sección Paleontología 16: 77–221.
  14. Furey, P.C., Manoylov, K.M. & Lowe, R.L. (2020) New and interesting aerial diatom assemblages from southwestern Iceland. Phytotaxa 428: 173–208. https://doi.org/10.11646/phytotaxa.428.3.2
  15. Goeyers, C., Kochman-Kędziora, N. & Van de Vijver, B. (2023) Orthoseira groenlandica sp. nov., a new aerophilic diatom (Orthoseirales, Bacillariophyta) species from Greenland. Phytotaxa 601: 81–89. https://doi.org/10.11646/phytotaxa.601.1.6
  16. Guerrero, J.M., Vouilloud, A.A., Sala, S.E., Kociolek, J.P. & Van de Vijver, B. (2018) New species and a new genus of the Orthoseirales from Patagonia, Argentina, with comments on systematic affinities within the Order. Phytotaxa 345: 119–132. https://doi.org/10.11646/phytotaxa.345.2.3
  17. Helmcke, J.-G. & Krieger, W. (1954) Diatomeenschalen im Elektronenmikroskopischen Bild. Bild und Forschung. Abteilung Biologie, Berlin-Wilmersdorf 2: 1–24.
  18. Houk, V. (1993) Some Morphotypes in the “Orthoseira roeseana” Complex. Diatom Research 8: 385–402. https://doi.org/10.1080/0269249X.1993.9705269
  19. Hustedt, F. (1958) Diatomeen aus der Antarktis und dem Südatlantik. Deutsche Antarktische Expedition 1938/1939. Geographisch-kartographische Anstalt Mundus, Hamburg 2: 103–191.
  20. Johansen, J.R. (2010) Diatoms of aerial habitats. In: Smol, J.P & Stoermer, E.F. (Eds.) The Diatoms: Applications for the Environmental and Earth Sciences, 2nd edition. Cambridge University Press, Cambridge, pp. 465–472. https://doi.org/10.1017/CBO9780511763175.025
  21. Kellogg, T.B. & Kellogg, D.E. (2002) Non-marine and littoral diatoms from Antarctic and Subantarctic regions. Distribution and updated taxonomy. In: Witkowski, A. (Ed.) Diatom Monographs 1. ARG Gantner Verlag, 795 pp.
  22. Kochman-Kędziora, N., Kusber, W.H., Kociolek, J.P. & Van de Vijver, B. (2023) Observations of the type material of Melosira roeseana Rabenhorst and Orthoseira spinosa W.Smith (Orthoseiraceae, Bacillariophyta). Notulae Algarum 274: 1–10. [https://notulaealgarum.org/2023/documents/Notulae%20Algarum%20No.%20274.pdf]
  23. Kochman-Kędziora, N., Noga, T., Olech, M. & Van de Vijver, B. (2018) Freshwater diatoms of the Ecology Glacier foreland, King George Island, South Shetland Islands. Polish Polar Research 39: 393–412. https://doi.org/10.24425/118753
  24. Kociolek, J.P., Kopalová, K., Hamsher, S.E., Kohler, T.J., Van de Vijver, B., Convey, P. & McKnight, D.M. (2017) Freshwater diatom biogeography and the genus Luticola: an extreme case of endemism in Antarctica. Polar Biology 40: 1185–1196. https://doi.org/10.1007/s00300-017-2090-7
  25. Kociolek, J.P., Liu, Q. & Danz, A. (2021) New and interesting diatoms from the Shimen Wetwalls, Yunnan Province, China. I. Valve morphology of Melosira radiato-sinuata var. yunnanica Chen (Bacillariophyta: Melosirales) from Yunnan Province, China, with comments on its systematic position. Diatom Research 36: 345–351. https://doi.org/10.1080/0269249X.2021.2025151
  26. Kociolek, J.P., Theriot, E.C., Williams, D.M., Julius, M., Stoermer, E.F. & Kingston, J.C. (2015) Centric and Araphid Diatoms. In: Wehr, J.D., Sheath, R.G. & Kociolek, J.P. (Eds.) Freshwater Algae of North America. Academic Press, San Diego, pp. 653–708. https://doi.org/10.1016/B978-0-12-385876-4.00015-3
  27. Kopalová, K., Ochyra, R., Nedbalová, L. & Van de Vijver, B. (2014) Moss-inhabiting diatoms from two contrasting Maritime Antarctic islands. Plant Ecology and Evolution 147: 67–84. https://doi.org/10.5091/plecevo.2014.896
  28. Kulikovskiy, M.S., Lange-Bertalot, H., Witkowski, A., Dorofeyuk, N.I. & Genkal, S.I. (2010) Diatom assemblages from Sphagnum bogs of the world. I. Nur bog in northern Mongolia. Bibliotheca Diatomologica 55: 1–326.
  29. Kützing, F.T. (1844) Die kieselschaligen Bacillarien oder Diatomeen. Nordhausen, 152 pp. https://doi.org/10.5962/bhl.title.64360
  30. Lange-Bertalot, H. & Metzeltin, D. (1996) Indicators of oligotrophy. 800 taxa representative of three ecologically distinct lake types, carbonate buffered-Oligodystrophic-weakly buffered soft water. Iconographia Diatomologica 2: 1–390.
  31. Lowe, R.L., Kociolek, P., Johansen, J.R., Van de Vijver, B., Lange-Bertalot, H. & Kopalová, K. (2014) Humidophila gen. nov., a new genus for a group of diatoms (Bacillariophyta) formerly within the genus Diadesmis: species from Hawai’i, including one new species. Diatom Research 29: 351–360. https://doi.org/10.1080/0269249X.2014.889039
  32. Lowe, R.L., Kociolek, J.P. & Van de Vijver, B. (2013) Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i). Phytotaxa 111: 39–52. https://doi.org/10.11646/phytotaxa.111.1.3
  33. Maidana, N.I., Izaguirre, I., Vinocur, A., Mataloni, G. & Pizarro, H.E. (2005) Diatomeas en una transecta patagónico-antártica. Ecología Austral 15: 159–176.
  34. Medlin, L.K. & Round, F.E. (1986) Taxonomic studies of marine gomphonemoid diatoms. Diatom Research 1: 205–225. https://doi.org/10.1080/0269249X.1986.9704970
  35. Metzeltin, D. & Lange-Bertalot, H. (2007) Tropical Diatoms of South America II. Special remarks on biogeography disjunction. Iconographia Diatomologica 18: 1–877.
  36. Noune, F., Chaib, N., Kaddeche, H., Dzizi, S., Metallaoui, S. & Blanco, S. (2023) Effect of salinity on valves morphology in freshwater diatoms. Environmental Monitoring and Assessment 195: 159. https://doi.org/10.1007/s10661-022-10770-w
  37. Pfitzer, E. (1871) Untersuchungen über Bau und Entwicklung der Bacillariaceen (Diatomaceen). In: Botanische Abhandlungen aus dem Gebiet der Morphologie und Physiologie. Bd2. pp. [i]–vi, [1]–189.
  38. Prygiel, M. & Coste, M. (2000) Guide Méthodologique pour la mise en ouvre de l’Indice Biologique Diatomées. Agences de l’Eau, Ministère de l’Aménagement du Territoire et de l’Environnement, Direction de l’Eau & CEMAGREF, France, 134 pp.
  39. Rabenhorst, L. (1853) Die Süsswasser-Diatomaceen (Bacillarien) für Freunde der Mikroskopie. Eduard Kummer, Leipzig, 72 pp. https://doi.org/10.5962/bhl.title.8348
  40. Roemer, S.C. & Rosowski, J.R. (1980) Valve and band morphology of some freshwater diatoms. III. Pre- and post-auxospore frustules and the initial cell of Melosira roeseana. Journal of Phycology 16: 399–411. https://doi.org/10.1111/j.1529-8817.1980.tb03052.x
  41. Round, F.E., Crawford, R.M. & Mann, D.G. (1990) The Diatoms. Biology & morphology of the genera. Cambridge University Press, Cambridge, 747 pp.
  42. Rybak, M., Glushchenko, A., Witkowski, A., Lange-Bertalot, H. & Kulikovskiy, M. (2022) Diversity of the genus Orthoseira Thwaites (Bacillariophyceae) from Southeast Asia and Rapa Nui Island with descriptions of four new taxa. Diatom Research 37: 1–16. https://doi.org/10.1080/0269249X.2022.2043448
  43. Schimani, K., Abarca, N., Skibbe, O., Mohamad, H., Jahn, R., Kusber, W-H., Campana, G.L. & Zimmermann, J. (2023) Exploring benthic diatom diversity in the West Antarctic Peninsula: insights from a morphological and molecular approach. Metabarcoding and Metagenomics 7: 339–384. https://doi.org/10.3897/mbmg.7.110194
  44. Spaulding, S.A. & Kociolek, J.P. (1998) The diatom genus Orthoseira: ultrastructure and morphological variation in two species from Madagascar with comments on nomenclature in the genus. Diatom Research 13: 133–147. https://doi.org/10.1080/0269249X.1998.9705439
  45. Stenger-Kovács, C., Béres, V.B., Buczkó, K., Al-Imari, J.T., Lázár, D., Padisák, J. & Lengyel, E. (2023) Review of phenotypic response of diatoms to salinization with biotechnological relevance. Hydrobiologia 850: 1–24. https://doi.org/10.1007/s10750-023-05194-7
  46. Sterken, M., Verleyen, E., Jones, V.J., Hodgson, D.A., Vyverman, W., Sabbe, K. & Van de Vijver, B. (2015) An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region). Plant Ecology and Evolution 148: 431–455. https://doi.org/10.5091/plecevo.2015.1103
  47. Temniskova-Topalova, D. & Chipev, N. (2001) Diatoms from Livingston Island, the South-Shetland Islands, Antarctica. In: Jahn, R., Kociolek, J.P., Witkowski, A. & Compere, P. (Eds.) Proceedings of the 16th International Diatom Symposium. University of Athens, Greece, pp. 291–307.
  48. Thwaites, G.H.K. (1848) XVI.—Further observations on the Diatomaceæ; with descriptions of new genera and species. Annals and Magazine of Natural History, Series 2. 1: 161–172. https://doi.org/10.1080/03745485809496091
  49. Tyler, P.A. (1996) Endemism in freshwater algae, with special reference to the Australian region. In: Kristiansen, J. (Ed.) Biogeography of freshwater algae. Hydrobiologia 336: 127–135. https://doi.org/10.1007/BF00010826
  50. Van de Vijver, B. & Crawford, R.M. (2014) Orthoseira limnopolarensis sp. nov. (Bacillariophyta), a new diatom species from Livingston Island (South Shetland Islands, Antarctica). Cryptogamie Algologie 35: 245–257. https://doi.org/10.7872/crya.v35.iss3.2014.245
  51. Van de Vijver, B., Frenot, Y. & Beyens, L. (2002) Freshwater diatoms from Ile de la Possession (Crozet Archipelago, Subantarctica). Bibliotheca Diatomologica 46: 1–412.
  52. Van de Vijver, B. & Kopalová, K. (2008) Orthoseira gremmenii sp. nov., a new aerophilic diatom from Gough Island (southern Atlantic Ocean). Cryptogamie Algologie 29: 105–118.
  53. Whitaker, T.M. (1977) Sea ice habitats of Signy Island (South Orkneys) and their primary productivity. In: Llano, G.A. (Ed.) Adaptations within Antarctic Ecosystems. Smithsonian Institution, Washington D.C., pp. 75–82.
  54. Zidarova, R., Kopalová, K. & Van de Vijver, B. (2016) Diatoms from the Antarctic Region, Maritime Antarctica. In: Iconographia Diatomologica: Annotated Diatom Micrographs 24. Koeltz Botanical Books, 504 pp.
  55. Zidarova, R., Ivanov, P., Hineva, E. & Dzhembekova, N. (2022) Diversity and habitat preferences of benthic diatoms from South Bay (Livingston Island, Antarctica). Plant Ecology and Evolution 155 (1): 70–106. https://doi.org/10.5091/plecevo.84534