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Issue: Vol. 676 No. 2: 10 Dec. 2024
Type: Article
Published: 2024-12-10
DOI: 10.11646/phytotaxa.676.2.2
Page range: 126-138
Abstract views: 217
PDF downloaded: 7

Planothidium minuanum sp. nov., a new diatom (Bacillariophyta) species fromsouthern Brazilian coastal lakes

Postgraduate Program in Ecology. Department of Ecology, Institute of Bioscience, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil. Luxembourg Institute of Science and Technology (LIST), Environmental Research & Innovation Department (ERIN), 41 rue du Brill, L-4422 Belvaux, Luxembourg.
Postgraduate Program in Ecology. Department of Ecology, Institute of Bioscience, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
Luxembourg Institute of Science and Technology (LIST), Environmental Research & Innovation Department (ERIN), 41 rue du Brill, L-4422 Belvaux, Luxembourg.
Achnanthidiaceae brackish periphyton South America subtropical rare species Algae

Abstract

A new Planothidium species discovered in epiphytic samples from southern Brazil’s coastal lakes is described as new using light and scanning electron microscopy. Named Planothidium minuanum sp. nov., it is distinguished from the most similar species by its elliptical, slightly asymmetrical valves with pronounced short rostrate ends and coarse striae consisting of one to two rows of areolae. This taxon bears resemblance to the cavum-bearing species in the “Planothidium rostratum sensu lato” group and the recently described Planothidium xinguense from the Brazilian Amazon. This study compares the morphology and ecology of this new species with related taxa and provides insights into its occurrence in southern Brazilian coastal lakes.

References

  1. Alvares, C.A., Stape, J.L., Sentelhas, P.C., Gonçalves, J.D.M. & Sparovek, G. (2013) Köppen’s climate classification map for Brazil. Meteorologische Zeitschrift 22: 711–728. https://doi.org/10.1127/0941-2948/2013/0507
  2. Association, American Public Health (2012) Standard Methods for the Examination of Water and Wastewater, 21st ed. American Public Health Association,Washington, DC.
  3. Bąk, M & Lange-Bertalot, H. (2015) Four small-celled Planothidium species from Central Europe proposed as new to science. Oceanological and Hydrobiological Studies 43: 346–359. https://doi.org/10.2478/s13545-014-0152-9
  4. Barber, H.G. & Haworth, E.Y. (1981) A guide to the morphology of the diatom frustule with a key to the British freshwater genera. Freshwater Biological Association, Scientific Publication No. 44. 112 p.
  5. Birks, H.J.B., Line, J.M., Juggins, S., Stevenson, A.C. & Ter Braak, C.J.F. (1990) Diatoms and pH reconstruction. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences 327: 263–278. https://doi.org/10.1098/rstb.1990.0062
  6. Carter, J.R. & Denny, P. (1982) Freshwater algae of Sierra Leone III. Bacillariophyceae: Part (i) Diatoms from the River Jong (Taia) at Njala. In: Håkansson, H. & J. Gerloff, J. (eds.) Diatomaceae III, Fetschrift Niels Foged. Beihefte zur Nova Hedwigia 73: 281–331.
  7. Chudaev, D.A. & Gololobova, M.A. (2016) Diatoms of the Glubokoe lake (Moscow region). Moscow, pp. 1–446, 266 pls.
  8. Cleve, P.T. & Grunow, A. (1880) Beiträge zur Kenntniss der arctischen Diatomeen. Kongliga Svenska Vetenskaps-Akademiens Handlingar 17: 1–121.
  9. Czarnecki, D.B. (1994) The freshwater diatoms culture collection at Loras College, Dubuque, Iowa. In: Kockiolek, J.P. (ed.) Proceedings of the 11th International Diatom Symposium. Memoirs of the California Academy of Sciences 17: 155–174.
  10. Dillenburg, S.R. & Hesp, P.A. (2008) Geology and geomorphology of Holocene coastal barriers of Brazil. Vol. 107. Springer Science & Business Media. https://doi.org/10.1007/978-3-540-44771-9
  11. Ehrenberg, C.G. (1854) Mikrogeologie. Einundvierzig Tafeln mit über viertausend grossentheils colorirten Figuren, Gezeichnet vom Verfasser. Leipzig: Verlag von Leopold Voss. pp. [1]–31, 40 pls [Taf. I–XXXX].
  12. Frenguelli, J. (1953) XIX Contribución al conocimiento de las diatomeas argentinas. Diatomeas del territorio nacional de Misiones. Revista del Museo de la Plata: 63–86.
  13. Fontana, L. & Bicudo, D.C. (2012) Diatomáceas (Bacillariophyceae) de sedimentos superficiais dos reservatórios em cascata do Rio Paranapanema (SP/PR, Brasil): Coscinodiscophyceae e Fragilariophyceae. Hoehnea 36: 375–386. https://doi.org/10.1590/S2236-89062009000300001
  14. Guimarães, T.D.F.R., Hartz, S.M. & Becker, F.G. (2014) Lake connectivity and fish species richness in southern Brazilian coastal lakes. Hydrobiologia 740: 207–217. https://doi.org/10.1007/s10750-014-1954-x
  15. Hernany, G., Souza, P. & Torgarn, L. (2013) Paleoecologia do sistema Pinguela-Palmital-Malvas, Holoceno da Bacia de Pelotas, RS, Brasil: uma abordagem focada na utilização de análises multivariadas para obtenção de diatomáceas descritoras. Pesquisas em Geociências 40: 31–49. https://doi.org/10.22456/1807-9806.40833
  16. Hohn, M.H. & Hellerman, J. (1963) The taxonomy and structure of diatom populations from three eastern North American rivers using three sampling methods. Transactions of the American Microscopical Society 82: 250–329. https://doi.org/10.2307/3223932
  17. Hustedt, F. (1950) Die Diatomeenflora norddeutscher Seen mit besonderer Berücksichtigung des holsteinischen Seengebiets. V-VII. Seen in Mecklenburg, Lauenburg und Nordostdeutschland. Archiv für Hydrobiologie 43: 329–458.
  18. INMET (2024). Instituto Nacional de Meteorologia. INMET Dados Meteorológicos, Brazil. Available from: http://www.inmet.gov.br/portal/ (accessed 28 May 2024)
  19. Jahn, R., Abarca, N., Gemeinholzer, B., Mora, D., Skibbe, O., Kulikovskiy, M., Gusev, E., Kusber, W.H. & Zimmermann, J. (2017) Planothidium lanceolatum and Planothidium frequentissimum reinvestigated with molecular methods and morphology: four new species and the taxonomic importance of the sinus and cavum. Diatom Research 32: 75–107. https://doi.org/10.1080/0269249X.2017.1312548
  20. Krammer, K. & Lange-Bertalot, H. (2004) Bacillariophyceae 4. Teil: Achnanthaceae, Kritische Erganzungen zu Navicula (Lineolatae), Gomphonema Gesamtliteraturverzeichnis Teil 1-4. In: Ettl, H., Gärtner, G., Krienitz, L. & Schagerl, M. (Eds.) Süsswasserflora von Mitteleuropa. Vol. 2 (4). Spektrum Akademischer Verlad Heidelberg, 468 pp., 93 pls.
  21. Krasske, G. (1923) Die Diatomeen des Casseler Beckens und seiner Randgebirge, nebst einigen wichtigen funden aus Niederhessen. Botanisches Archiv 3 (4): 185–209.
  22. Kulikovskiy, M.S., Lange-Bertalot, H. & Kuznetsova, I.V. (2015) Lake Baikal: hotspot of endemic diatoms II. Iconographia Diatomologica 26: 1–657.
  23. Kulikovskiy, M.S., Lange-Bertalot, H. & Witkowski, A. (2013) Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science. Phytotaxa 109 (1): 1–16. https://doi.org/10.11646/phytotaxa.109.1.1
  24. Kützing, F.T. (1833) Synopsis Diatomacearum oder Versuch einer systematischen Zusammenstellung der Diatomeen. Linnaea 8: 529–620. https://doi.org/10.5962/bhl.title.65634
  25. Kützing, F.T. (1846) Kurze Mittheilung uber einige kieselschalige Diatomeen. Botanische Zeitung 4 : 247–248.
  26. Lange-Bertalot, H. (1993) 85 neue Taxa und über 100 weitere neu definierte Taxa ergänzend zur Süsswasserflora von Mitteleuropa, Vol. 2/1-4. Bibliotheca Diatomologica 27: 1–454.
  27. Lange-Bertalot, H. (1999) Neue Kombinationen von Taxa aus Achnanthes Bory (sensu lato). Iconographia Diatomologica 6: 276–289.
  28. Lange-Bertalot, H. & Krammer, K. (1987) Bacillariaceae Epithemiaceae Surirellaceae. Neae und wenig bekannte Taxa, neae Kombinationen und Synonyme sowie Bemerkungen und Erganzungen zu den Naviculaceae. Bibliotheca Diatomologica 15: 289.
  29. Lorscheitter, M.L. & Dillenburg, S.R. (1998) Holocene palaeoenvironments of the northern coastal plain of Rio Grande do Sul, Brazil, reconstructed from palynology of Tramandaí lagoon sediments. Quaternary of South America and Antarctic Peninsula 1: 67–93.
  30. Marquardt, G.C., Bicudo, D.C., de Bicudo, C.E., Ledru, M.P., Ector, L & Wetzel, C.E. (2021) Planothidium scrobiculatum sp. nov. (Bacillariophyta), a new monoraphid diatom from freshwater Pleistocene deposits of South America. Fottea 21: 53–61. https://doi.org/10.5507/fot.2020.016
  31. Morais, K.S., Costa, L.F., Bicudo, C.E.D.M., Ector, L. & Wetzel, C.E. (2020) A new Planothidium species (Achnanthidiaceae, Bacillariophyceae) from Xingu Ria, Amazon River basin, Brazil. Phytotaxa 477 (2): 194–204. https://doi.org/10.11646/phytotaxa.477.2.4
  32. Morales, E.A. (2001) Morphological studies in selected fragilarioid diatoms (Bacillariophyceae) from Connecticut waters (USA). Proceedings of the academy of natural sciences of Philadelphia 151: 105–120. https://doi.org/10.1635/0097-3157(2001)151[0105:MSISFD]2.0.CO;2
  33. N’Guessan, K.R., Wetzel, C.E., Ector, L., Coste, M., Cocquyt, C., Van de Vijver, B., Yao, S.S., Ouattara, A., Kouamelan, E.P. & Tison-Rosebery, J. (2014) Planothidium comperei sp. nov. (Bacillariophyta), a new diatom species from Ivory Coast. Plant Ecology and Evolution 147: 455–462. https://doi.org/10.5091/plecevo.2014.981
  34. Østrup, E. (1902) Freshwater diatoms. In: Schmidt, J. (Ed.) Flora of Koh Chang. Contributions to the knowledge of the vegetation in the Gulf of Siam. Part VII. Botanisk Tidsskrift 25: 28–41.
  35. R Core Team (2023) R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna, Austria.
  36. Round, F.E. & Bukhtiyarova, L. (1996) Four new genera based on Achnanthes (Achnanthidium) together with a re-definition of Achnanthidium. Diatom Research 11 (2): 345–361. https://doi.org/10.1080/0269249X.1996.9705389
  37. Round, F.E., Crawford, R.M. & Mann, D.G. (1990) The diatoms: biology & morphology of the genera. Cambridge University Press, Cambridge. 747 p.
  38. Ruwer, D.T. & Rodrigues, L. (2018) Subfossil and periphytic diatoms from the upper Paraná river, Brazil: last~ 1000 years of a transition period. Hoehnea, 45: 431–449. https://doi.org/10.1590/2236-8906-89/2017
  39. Schäfer, A.E., Marchett, C.A., Schuh, S.M., Ahlert, S. & Lanzer, R.M. (2014) Morphological characterization of eighteen lakes of the north and middle coast of Rio Grande do Sul, Brazil. Acta Limnologica Brasiliensia 26: 199–214. https://doi.org/10.1590/S2179-975X2014000200010
  40. Schwarzbold, A. & Schäfer, A. (1984) Gênese e Morfologia das Lagoas Costeoras do Rio Grande do Sul-Brasil. Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas 9 (1): 87–104.
  41. Simonsen, R. (1979) The diatom system: ideas on phylogeny. Bacillaria 2: 9–71.
  42. Stancheva, R. (2019) Planothidium sheathii, a new monoraphid diatom species from rivers in California, USA. Phytotaxa 393 (2): 131–140. https://doi.org/10.11646/phytotaxa.393.2.4
  43. Stancheva, R., Kristan, N.V., Kristan III, W.B. & Sheath, R.G. (2020) Diatom genus Planothidium (Bacillariophyta) from streams and rivers in California, USA: diversity, distribution and autecology. Phytotaxa 470 (1): 1–30. https://doi.org/10.11646/phytotaxa.470.1.1
  44. Van de Vijver, B., Wetzel, C.E. & Ector, L. (2018) Analysis of the type material of Planothidium delicatulum (Bacillariophyta) with the description of two new Planothidium species from the sub–Antarctic Region. Fottea 18: 200–211. https://doi.org/10.5507/fot.2018.006
  45. Van de Vijver, B., Wetzel, C.E., Kopalová, K., Zidarova, R. & Ector, L. (2013) Analysis of the type material of Achnanthidium lanceolatum Brébisson ex Kützing (Bacillariophyta) with the description of two new Planothidium species from the Antarctic Region. Fottea 13: 105–117. https://doi.org/10.5507/fot.2013.010
  46. Van de Vijver, B., Gogne, B., Hoogsteyns, G., Van De Velde, L., Vlaminck, L., Kabota, S.A., Teunen, L. & Wetzel, C.E. (2023) Planothidium africanum sp. nov., a new freshwater diatom (Bacillariophyta) species from Tanzania. Phytotaxa 585: 281–286. https://doi.org/10.11646/phytotaxa.585.4.4
  47. Van Heurck, H. (1882) Synopsis des Diatomées de Belgique. Atlas. Ducaju & Cie., Anvers. pls 78–103.
  48. Villwock, J.A. Tomazelli, L.J. Loss, E.L. Dehnhardt, E.A. Horn, N.O. Bachi, F.A. & Dehnhardt, B.A. (1986) Geology of the Rio Grande do Sul Coastal Province. In: Rabassi, J. (Eds.) Quaternary of South America and Antartica Peninsula. Balkema, Rotterdam, pp. 79–97. https://doi.org/10.1201/9781003079316-5
  49. Werum, M. & Lange-Bertalot, H. (2004) Diatoms in Springs from Central Europe and elsewhere under the influence of hydrologeology and anthropogenic impacts. Iconographia Diatomologica 13: 3–417.
  50. Wetzel, C.E. & Ector, L. (2014a) Taxonomy, distribution and autecology of Planothidium bagualensis sp. nov. (Bacillariophyta) a common monoraphid species from southern Brazilian rivers. Phytotaxa 156 (4): 201–210. https://doi.org/10.11646/phytotaxa.156.4.2
  51. Wetzel, C.E. & Ector, L. (2014b) Planothidium lagerheimii comb. nov. (Bacillariophyta, Achnanthales) a forgotten diatom from South America. Phytotaxa 188: 261–267. https://doi.org/10.11646/phytotaxa.188.5.3
  52. Wetzel, C.E., Van de Vijver, B., Blanco, S. & Ector, L. (2019) On some common and new cavum-bearing Planothidium (Bacillariophyta) species from freshwater. Fottea 19: 50–89. https://doi.org/10.5507/fot.2018.016
  53. Wetzel, C.E., Van de Vijver, B., Hoffmann, L. & Ector, L. (2013) Planothidium incuriatum sp. nov. a widely distributed diatom species (Bacillariophyta) and type analysis of Planothidium biporomum. Phytotaxa 138: 43–57. https://doi.org/10.11646/phytotaxa.138.1.6
  54. Wetzel, C.E., Van de Vijver, B., Kopalová, K., Hoffmann, L., Pfister, L. & Ector, L. (2014) Type analysis of the South American diatom Achnanthes haynaldii (Bacillariophyta) and description of Planothidium amphibium sp. nov., from aerial and aquatic environments in Oregon (USA). Plant Ecology and Evolution 147: 439–454. https://doi.org/10.5091/plecevo.2014.1058
  55. Zorzal-Almeida, S., Lehmkuhl, E.A., Marquardt, G.C., Morais, K.S., Trancoso, M.S. & Silva-Lehmkuhl, A.M. (2022) 177 years of diatom studies in Brazil: knowledge, gaps, and perspectives. Anais da Academia Brasileira de Ciências 94: e20210959. https://doi.org/10.1590/0001-3765202220210959