Accessible Requires Authentication Published by De Gruyter January 6, 2021

Analysis of type material of Opephora pacifica and emendation of the genus Opephora (Bacillariophyta)

Eduardo A. Morales ORCID logo, Carlos E. Wetzel, Luc Ector and Bart Van de Vijver
From the journal Botanica Marina

Abstract

The genus Opephora currently contains 37 species and 27 infraspecific taxa. However, the existing literature reveals a wide morphological diversity and the need to establish defining characters to circumscribe the genus as a cohesive and, perhaps, monophyletic group. The type material of Opephora pacifica, the generitype, is analysed. We emend the description of both the species and the genus, the latter also based on published light and scanning electron microscopy observations of closely related species. After review of the available literature, we determined that currently only two species can be ascribed with certainty to the genus Opephora: O. pacifica and O. marina. Based on available literature, it is highly likely that O. fragilarioides also belongs to this genus. We present a table with all known species and infraspecific taxa and make comments regarding their recent transfer to other genera, their current accepted nomenclature, and the genus to which they should probably be ascribed pending the collection of further information.


Corresponding author: Eduardo A. Morales, Water Laboratory, University of Évora, P.I.T.E. Rua da Barba Rala No. 1, 7005–345Évora, Portugal; and Institute of Earth Sciences – ICT, University of Évora, Rua Romão Ramalho 59, 7000–671Évora, Portugal, E-mail:

Funding source: European Regional Development Fund

Award Identifier / Grant number: UID/GEO/04683/2013

Funding source: LIST-Luxembourg Institute of Science and Technology

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This work was co-funded by the European Union through the European Regional Development Fund, framed within the Operational Programme Competitiveness and Internationalization, COMPETE 2020 through the ICT project (UID/GEO/04683/2013) with reference POCI-01-0145-FEDER-007690 and the Agencia Portuguesa do Ambiente, APA-000004DFIN.AALP/2017 integrated within the Operational Program for Sustainability and Efficiency in the Use of Resources 2014-20, POSEUR-03-2013-FC-000001. Funding for this research was also partly provided in the framework of the DIATOMS project (LIST-Luxembourg Institute of Science and Technology).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

References

Andrén, E. (1997). A study of the diatom Opephora marina (Gregory) Petit. Diatom Res. 12: 199–205. Search in Google Scholar

Barber, H.G. and Haworth, E.Y. (1981). A guide to the morphology of the diatom frustule. With a key to the British freshwater genera. Scientific Publication No. 44. Freshwater Biological Association, Ambleside, p. 112. Search in Google Scholar

Boyer, C.S. (1916). The Diatomaceae of Philadelphia and vicinity. J.B. Lippincott Co., Philadelphia, p. 143. Search in Google Scholar

Boyer, C.S. (1927). Synopsis of North American Diatomaceae. Part I. Coscinodiscatae, Rhizoselenatae, Biddulphiatae, Fragilariatae. Proc. Acad. Nat. Sci. Phila. 78(Suppl): 1–228. Search in Google Scholar

Carter, J.R. and Denny, P. (1982). Freshwater algae of Sierra Leone III. Bacillariophyceae: Part (I) diatoms from the river Jong (Taia) at Njala. Nova Hedwigia Beih. 73: 281–331. Search in Google Scholar

Cholnoky, B.J. (1955). Diatomeen aus salzhaltigen Binnengewässern der westlichen Kaap-Provinz in Südafrika. Ber. Deutsch. Bot. Ges. 68: 11–23. Search in Google Scholar

Cleve, P.T. and Möller, J.D. (1879). Diatoms. Part V, No. 217–276. Esatas Edquists Boktrykeri, Upsala. Search in Google Scholar

Cleve-Euler, A. (1941). Alttertiäre Diatomeen und Silicoflagellaten im inneren Schwedens, gefunden und gezeichnet von Ake Berg, beschrieben von Astrid Cleve-Euler. Palaeontograph. Abt. 92: 165–212. Search in Google Scholar

Cleve-Euler, A. (1953). Die Diatomeen von Schweden und Finnland. Teil II. Arraphideae, Brachyraphideae. Kongl. Svenska Vetensk.-Akad. Handl., Fjärde Ser. 4: 1–158. Search in Google Scholar

Cox, E.J. (2012). Ontogeny, homology, and terminology–wall morphogenesis as an aid to character recognition and character state definition for pennate diatom systematics. J. Phycol. 48: 1–31. Search in Google Scholar

Cox, E.J. and Ross, R. (1981). The striae of pennate diatoms. In: Ross, R. (Ed.). Proceedings of the sixth symposium on recent and fossil diatoms. Otto Koeltz Science Publishers, Koenigstein, pp. 267–278. Search in Google Scholar

Desikachary, T.V. and Prema, P. (1987). Diatoms from the Bay of Bengal. In: Desikachary, T.V. (Ed.). Atlas of diatoms. Fasc. III. Madras Science Foundation, Madras, pp. 1–10. Search in Google Scholar

Edsbagge, H. (1968). Zur ökologie der marinen angehefteten diatomeen. Bot. Gothob. 6: 1–139. Search in Google Scholar

Elmore, C.J. (1921). The diatoms (Bacillarioideae) of Nebraska, Vol. 21. The University of Nebraska is in Lincoln, Nebraska, U.S.A., pp. 22–215. Search in Google Scholar

Ferreira, T., Freitas, M.C., Bao, R., and Andrade, C. (2010). Associações de diatomáceas em lagunas – Lagoas de Albufeira e de Santo André (SW Portugal): resultados preliminares. e-Terra. Rev. Electrón. Ciênc. Terra. Geosci. On-line J. 12: 1–4. Search in Google Scholar

Giffen, M.H. (1967). Contributions to the diatom flora of South Africa III. Diatoms of the marine littoral regions at Kidd’s Beach near east. London, Cape Province, South Africa. Nova Hedwigia 13: 245–292. Search in Google Scholar

Giffen, M.H. (1980). A checklist of marine littoral diatoms from Mahé, Seychelles Islands. Bacillaria 3: 129–159. Search in Google Scholar

Gogorev, R.M. and Lange, E.K. (2014). Центрические и бесшовные пеннатные диатомовые (Bacillariophyta) водной толщи реликтового озера Могильное (остров Кильдин, Баренцево море) [Centric and araphid diatoms (Bacillariophyta) in the water column of the relict lake Mogilnoye (Kildin Island, Barents sea)]. Nov. Sist. Nizsh. Rast. [Novitates Systematicae Plantarum non Vascularium] 48: 66–80. Search in Google Scholar

Grunow, A. (1862). Die österreichischen Diatomaceen nebst Anschluss einiger neuen Arten von andern Lokalitäten und einer kritischen Übersicht der bisher bekannten Gattungen und Arten. Erste Folge. Epithemieae, Meridioneae, Diatomeae, Entopyleae, Surirelleae, Amphipleureae. Zweite Folge. Familie Nitschieae. Verh. K.-K. Zool.-Bot. Ges. Wien 12: 545–588. Search in Google Scholar

Grunow, A. (1863). Ueber einige neue und ungenügend bekannte Arten und Gattungen von Diatomaceen. Verh. K.-K. Zool.-Bot. Ges. Wien 13: 137–162. Search in Google Scholar

Guiry, M.D. and Guiry, G.M. (2020). AlgaeBase. World-Wide Electronic Publication, National University of Ireland, Galway, Available at: <http://www.algaebase.org> (Accessed 7 May 2020). Search in Google Scholar

Héribaud, J. (1902). Les diatomées fossiles d’Auvergne. Librairie des Sciences Naturelles, Paris, pp. 5–79. Search in Google Scholar

Héribaud, J. (1903). Les diatomées fossiles d’Auvergne 2. Librairie des Sciences Naturelles, Paris, pp. 1–376. Search in Google Scholar

Héribaud, J. (1908). Les diatomées fossiles d’Auvergne. Librairie des Sciences Naturelles, Paris, pp. 1–70. Search in Google Scholar

Hohn, M.H. and Hellerman, J. (1963). The taxonomy and structure of diatom populations from three eastern North American rivers using three sampling methods. Trans. Am. Microsc. Soc. 82: 250–329. Search in Google Scholar

Hustedt, F. (1931). Die Kieselalgen Deutschlands, Österreichs und der Schweiz unter Berücksichtigung der übrigen Länder Europas sowie der angrenzenden Meeresgebiete. 7(2): Lief. 1. In: Rabenhorst, L. (Ed.). Rabenhorst’s Kryptogamen Flora von Deutschland, Österreich und der Schweiz. Akademische Verlagsgesellschaft m.b.h., Leipzig, pp. 1–176. Search in Google Scholar

INA [Index Nominum Algarum]. (2020). University Herbarium, University of California, Berkeley. Compiled by Paul Silva. Available at: <http://ucjeps.berkeley.edu/INA.html>. Search in Google Scholar

Jouravleva, A.A. (1936). Die fossilen Diatomeen des Tunkin Kessels (Baikal-Gebiet). Trudy neft. Geol.-Razved. Inst., Ser. A 76: 47–64. Search in Google Scholar

Jurilj, A. (1957). Dijatomeje samatskog mora okoline Zagreba. (Flora of diatoms of Sarmatic sea in environs of Zagreb). Jugosl. Akad. Znan. i Umjet. (Acta Biologica 1) 28: 5–153. Search in Google Scholar

Kato, K., Kobayasi, H., and Nagumo, T. (1977). Diatoms in Hachiro-gata Regulation Pond. In: Research Association for Hachiro-gata Regulation Pond. (Ed.). Report from the research association for Hachiro-gata regulation pond’s fauna and flora. Akita Prefectural Board of Education, Akita, pp. 63–137. Search in Google Scholar

Kociolek, J.P., Karthick, B., Blanco, S., Coste, M., Ector, L., Liu, Y., Kulikovskiy, M., Lundholm, N., Ludwig, T., Potapova, M., et al.. (2020). DiatomBase. Available at: <http://www.diatombase.org> (Accessed 7 July 2020). Search in Google Scholar

Komarenko, L.E. and Vasilyeva, I.I. (1975). Presnovodny diatomovye i senezelenye vodorosli vodoemov Yakutii. [Freshwater diatoms and blue-green algae of the water basins in Yakutia]. Akad. Nauk SSSR, Sibirskoe Otdel., Yakutskii Filial, Inst. Biol., Izdatel, Nauka, Moscow, p. 423. Search in Google Scholar

Koutsodendris, A., Brauer, A., Reed, J.M., Plessen, B., Friedrich, O., Hennrich, B., Zacharias, I., and Pross, J. (2017). Climate variability in SE Europe since 1450 AD based on a varved sediment record from Etoliko Lagoon (Western Greece). Quat. Sci. Rev. 159: 63–76. Search in Google Scholar

Krasske, G. (1939). Zur Kieselalgenflora Südchiles. Arch. Hydrobiol. 35: 349–468. Search in Google Scholar

Lange-Bertalot, H. (1989). Können Staurosirella, Punctastriata und weitere Taxa sensu Williams & Round als Gattungen del Fragilariaceae kritischer Prüfung standhalten? Generic rank for Punctastriata, Staurosirella and other taxa sensu Williams & Round? Nova Hedwigia 49: 79–106. Search in Google Scholar

Li, C.L., Ashworth, M.P., Witkowski, A., Dąbek, P., Medlin, L.K., Kooistra, W.H.C.F., Sato, S., Zgłobicka, I., Kurzydłowski, K.J., Theriot, E.C., et al.. (2015). New insights into Plagiogrammaceae (Bacillariophyta) based on multigene phylogenies and morphological characteristics with the description of a new genus and three new species. PloS One 10: e0139300. Search in Google Scholar

Li, C.L., Ashworth, M.P., Witkowski, A., Lobban, C.S., Zgłobicka, I., Kurzydłowski, K.J., and Qin, S. (2016). Ultrastructural and molecular characterization of diversity among small araphid diatoms all lacking rimoportulae. I. Five new genera, eight new species. J. Phycol. 52: 1018–1036. Search in Google Scholar

Li, C.L., Witkowski, A., Ashworth, M.P., Dąbek, P., Sato, S., Zgłobicka, I., Witak, M., Khim, J.S., and Kwon, C.-J. (2018). The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira. Phytotaxa 355: 1–104. Search in Google Scholar

Lohman, K.E. (1957). Cenozoic nonmarine diatoms from the great basin, Ph.D. thesis. Pasadena, California Institute of Technology. Search in Google Scholar

Manguin, É. (1949). Contribution à la connaissance des diatomées fossiles des dépôts lacustres de l’Ankaratra. Ann. Geol. Serv. Mines (Madag.) 18: 85–115. Search in Google Scholar

Mereschkowsky, C. (1902). Note sur les diatomées de Guenitschesk (Mer d’Azow), Vol. 24. Odesskoe obshchestvo estestvoispytatelei, Odessa, pp. 34–72. Search in Google Scholar

Mills, F.W. (1934). An index to the genera and species of the Diatomaceae and their synonyms. 1816–1932. Part 11 (Ga-He). Wheldon & Wesley, Limited, London, p. 822. Search in Google Scholar

Morales, E.A. (2002). Studies in selected fragilarioid diatoms of potential indicator value from Florida (USA) with notes on the genus Opephora Petit (Bacillariophyceae). Limnologica 32: 102–113. Search in Google Scholar

Morales, E.A. and Edlund, M.B. (2003). Studies in selected fragilarioid diatoms (Bacillariophyceae) from lake Hovsgol, Mongolia. Phycol. Res. 51: 225–239. Search in Google Scholar

Morales, E.A. and Manoylov, K.M. (2006). Morphological studies on selected taxa in the genus Staurosirella Williams et Round (Bacillariophyceae) from rivers in North America. Diatom Res. 21: 343–364. Search in Google Scholar

Morales, E.A., Novais, M.H., Chávez, G., Hoffmann, L., and Ector, L. (2012). Diatoms (Bacillariophyceae) from the Bolivian Altiplano: three new araphid species from the Desaguadero river draining lake Titicaca. Fottea 12: 41–58. Search in Google Scholar

Morales, E.A., Wetzel, C.E., Van de Vijver, B., and Ector, L. (2015). Morphological studies on type material of widely cited araphid diatoms (Bacillariophyta). Phycologia 54: 455–470. Search in Google Scholar

Morales, E.A., Wetzel, C.E., Novais, M.H., Buczkó, K., Morais, M.M., and Ector, L. (2019). Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species. Plant Ecol. Evol. 152: 262–284. Search in Google Scholar

Moser, G., Lange-Bertalot, H., and Metzeltin, D. (1998). Insel der Endemiten. Geobotanisches Phänomen Neukaledonien. Bibl. Diatomol. 38: 1–464. Search in Google Scholar

Ognjanova-Rumenova, N., Temniskova-Topalova, D., and Valeva, M. (1994). Ultrastructure of Fragilaria Lyngbye species (Bacillariophyta) from Neogene sediments in Bulgaria. Memoir. Calif. Acad. Sci. 17: 291–300. Search in Google Scholar

Okuno, H. (1952). Atlas of fossil diatoms from Japanese diatomite deposits. Kawakita Printing Co., Kyoto, p. 49. Search in Google Scholar

Pantocsek, J. (1889). Beiträge zur Kenntnis der Fossilen Bacillarien Ungarns. Teil II. Brackwasser Bacillarien. Anhang: Analyse de marine Depots von Bory, Bremia, Nagy-Kurtos in Ungarn; Ananio und Kusnetzk in Russland. Buchdrucherei von Julius Platzko, Nagy-Tapolcsány, p. 123. Search in Google Scholar

Patrick, R. and Reimer, C.W. (1966). The diatoms of the United States. Exclusive of Alaska and Hawaii. Volume 1. Fragilariaceae, Eunotiaceae, Achnanthaceae, Naviculaceae. Monogr. Acad. Nat. Sci. Phila. 13: 1–688. Search in Google Scholar

Pelletan, J. (1889). Les diatomées. Histoire naturelle, préparation, classification et description des principales espèces, Part II. J. de Micrographie 1: 1–364. Search in Google Scholar

Petit, P. (1888). Diatomacées récoltées dans le voisinage du Cap Horn. In: Hariot, P., Petit, P., Muller d’Argovie, J., Bescherelle, E., Massalongo, C., and Franchet, A. (Eds.). Mission scientifique du Cap Horn 1882–1883, Tome V, Botanique. Gauthier-Villars et Fils, Imprimeurs-Libraires, Paris, pp. 111–140. Search in Google Scholar

Poretzky, V.S. (1953). Iskopaemye diatomovye vodorosli Kisatibi Akhaltzikhskogo raiona Gruzinskoi S.S.R. (Die fossilen diatomeen von Kissatibi (Gebiet von Achalzych, Grusien). In: Proschkina-Lavrenko, A.I. and Scheschukova, V.S. (Eds.). Diatomovyi Sbornik, posvyashchennyi pamyati professora V.S. Poretskogo, Leningrad. Izd. Leningradskogo Gosudarstvennogo Universiteta. Ordena Lenina Univ. im. A.A. Zhdanova), Leningrad, pp. 13–54. Search in Google Scholar

Potapova, M.G., Minerovic, A.D., Veselá, J., and Smith, C.R. (2020). Diatom new taxon file at the academy of natural sciences (DNTF-ANS), Philadelphia. Available at: <http://dh.ansp.org/dntf> (Accessed 2 September 2020). Search in Google Scholar

Poulin, M., Bérard-Therriault, L., and Cardinal, A. (1984). Les diatomées benthiques de substrats durs des eaux marines et saumâtres du Québec 3. Fragilarioideae (Fragilariales, Fragilariaceae). Nat. Can. 111: 349–367. Search in Google Scholar

Proschkina-Lavrenko, A.I. (1950). Diatomovyi Analiz, Kniga 3. Opredelitel’ iskopaemykh i sovremennykh diatomyk vodoroslei Poriadok Pennales, Vol. 3. Botanicheskii Institut im V.L. Komarova Akademii Nauk S.S.S.R. Gosudarstvennoe Izdatelystvo Geologicheskoi Literatury, Moskva-Leningrad, pp. 1–398. Search in Google Scholar

Round, F.E., Crawford, R.M., and Mann, D.G. (1990). The diatoms. Biology and morphology of the genera. Cambridge University Press, Cambridge, p. 747. Search in Google Scholar

Round, F.E., Hallsteinsen, H., and Paasche, E. (1999). On a previously controversial “fragilarioid” diatom now placed in a new genus Nanofrustulum. Diatom Res. 14: 343–356. Search in Google Scholar

Sabbe, K. and Vyverman, W. (1995). Taxonomy, morphology and ecology of some widespread representatives of the diatom genus Opephora. Eur. J. Phycol. 30: 235–249. Search in Google Scholar

Schoeman, F.R. and Meaton, V.H. (1982). Catalogue of recently described diatom taxa from Africa and neighbouring islands (1965–1980). CSIR Special Report WAT 64: 1–61. Search in Google Scholar

Sherman, J.W. and Patrick, R. (1981). The waters of Merom: a study of Lake Huleh. 7. Diatom stratigraphy of the 54-M core. Arch. Hydrobiol. 92: 199–221. Search in Google Scholar

Siqueiros-Beltrones, D.A., Argumedo-Hernández, U., and López-Fuerte, F.O. (2017). Diversity of benthic diatoms in the Guerrero Negro Lagoon (El Vizcaíno Biosfere Reserve), Baja California Peninsula, Mexico. Rev. Mex. Biodivers. 88: 21–35. Search in Google Scholar

Skvortzow, B.W. (1936). Diatoms from Kizaki lake, Honshu Island, Nippon. Philipp. J. Sci. 61: 9–73. Search in Google Scholar

Skvortzow, B.W. (1937). Bottom diatoms from Olhon gate of Baikal lake, Siberia. Philipp. J. Sci. 62: 293–377. Search in Google Scholar

Tarnavschi, I.T. and Oltean, M. (1960). Diatomeen aus der Sammlung Em. C. Teodorescu. Herb. alg. Rom. Acta Bot. Horti Bucur. 1: 187–203. Search in Google Scholar

Tynni, R. (1994). Observations on the recent diatom flora of lakes, rivers and the Baltic Sea, southern Finland, Vol. 80. University of Turku, Publications of the Department of Quaternary Geology, Turku, Finland, pp. 1–51. Search in Google Scholar

Williams, D.M. and Round, F.E. (1987). Revision of the genus Fragilaria. Diatom Res. 2: 267–288. Search in Google Scholar

Witkowski, A. (1994). Recent and fossil diatom flora of the Gulf of Gdańsk, Southern Baltic Sea. Origin, composition and changes of diatom assemblages during the Holocene. Bibl. Diatomol. 28: 1–313. Search in Google Scholar

Witkowski, A., Lange-Bertalot, H., and Metzeltin, D. (2000). Diatom flora of marine coasts I. Iconogr. Diatomol. 7: 1–925. Search in Google Scholar

Witkowski, A., Riaux-Gobin, C., and Daniszewska-Kowalczyk, G. (2010). New marine littoral diatom species (Bacillariophyta) from Kerguelen Islands. II. Heteropolar species of Fragilariaceae. Vie Milieu 60: 265–281. Search in Google Scholar

Received: 2020-05-11
Accepted: 2020-12-09
Published Online: 2021-01-06
Published in Print: 2021-02-23

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