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DOI: http://dx.doi.org/10.11646/phytotaxa.121.1.2

Cymatosirella Dąbek, Witkowski & Sabbe gen. nov., a new marine benthic diatom genus (Bacillariophyta) belonging to the family Cymatosiraceae

PRZEMYSŁAW DĄBEK, KOEN SABBE, ANDRZEJ WITKOWSKI, COLIN ARCHIBALD, KRZYSZOF J. KURZYDŁOWSKI, IZABELA ZGŁOBICKA

Abstract


We present a new marine benthic diatom genus Cymatosirella gen. nov. The genus belongs to the family Cymatosiraceae and has been assigned to the subfamily Extubocelluloideae on the basis of ultrastructural cell wall features. It has isovalvate cells with undulate valves and is characterized by the absence of tubular processes and the occurrence of hollow spines which are observed for the first time in the Cymatosiraceae. The new genus contains four species, two of which are transferred from the genus Cymatosira, viz. Cymatosirella capensis comb. nov. and Cymatosirella minutissima comb. nov., and two which are new to science, viz. Cymatosirella benguelensis sp. nov. and Cymatosirella taylorii sp. nov. Cymatosirella capensis is chosen as the generitype. The new genus includes a group of very small taxa inhabiting the intertidal zone of the Atlantic Ocean with three species in South Africa and one in Europe. C. capensis was originally described by Giffen from Langebaan Lagoon (a shallow marine inlet in the southern part of Saldanha Bay, Western Cape Province), on the basis of light microscopy only, and has to date only been illustrated by line drawings. C. minutissima, so far only known from the Westerschelde estuary (The Netherlands), has previously been documented in more detail using both light and electron microscopy. Here, we present the results of detailed light and electron microscopical investigations of C. capensis, both from its original type material and from recently collected samples from the type locality and neighboring littoral areas in the Western Cape Province, and of the new species C. benguelensis and C. taylorii, also from Western Cape localities. All species are compared with similar small taxa belonging to the Cymatosiraceae, subfamily Extubocelluloideae.


Keywords


Cymatosirella, diatoms, Giffen, marine littoral, new genus

References


Anonymous (1975) Proposals for a standardization of diatom terminology and diagnoses. Bieheft zür Nova Hedwigia 53: 323–354.

Gardner, C. & Crawford, R.M. (1993) A description of Plagiogrammopsis mediaequatus Gardner & Crawford sp. nov.(Cymatosiraceae, Bacillariophyta) using light and electron microscopy. Diatom Research 9: 53–63.
http://dx.doi.org/10.1080/0269249X.1994.9705287

Giffen, M.H. (1970) New and interesting marine and littoral diatoms from Sea Point, near Cape Town, South Africa. Botanica Marina 13: 87–99.
http://dx.doi.org/10.1515/botm.1970.13.2.81

Giffen, M.H. (1973) Diatoms of the marine littoral of Steenberg’s Cove in St. Helena Bay, Cape Province, South Africa. Botanica Marina 16: 32–48.
http://dx.doi.org/10.1515/botm.1973.16.1.32

Giffen, M.H. (1975) An account of the littoral diatoms from Langebaan, Saldanha Bay, Cape Province, South Africa. Botanica Marina 18: 71–95.
http://dx.doi.org/10.1515/botm.1975.18.2.71

Giffen, M.H. (1976) A further account of the marine littoral diatoms of Saldanha Bay, Cape Province, South Africa. Botanica Marina 19: 379–394.
http://dx.doi.org/10.1515/botm.1976.19.6.379

Giffen, M.H. (1984) A checklist of marine littoral diatoms from Namaqualand, South Africa. Bacillaria 7: 179–200.

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. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 12: 315–472.

Hasle, G.R., Stosch von, H.A. & Syvertsen, E.E. (1983) Cymatosiraceae, a New Diatom Family. Bacillaria 6: 9–156.

Hendey, N.I. (1964) An introductory account of the smaller algae of British coastal waters. V. Bacillariophyceae (Diatoms). London, 317 pp.

Hustedt, F. (1939) Die Diatomeenflora des Kuestengebietes der Nordsee vom Dollard bis zur Elbemuendung. Abhandlungen herausgegeben vom naturwissenschaftlichen Verein zu Bremen 31: 571–677.

Hustedt, F. (1955) Marine littoral diatoms of Beaufort, North Carolina. Bulletin Duke University Marine Station 6: 1–67.

Martin-Cereceda, M., Williams, R., Guinea, A. & Novarino, G. (2007) An investigation of the fine structure, cell surface carbohydrates, and appeal of the diatom Extubocellulus sp. as prey for small flagellates. Protoplasma 232: 69–78.
http://dx.doi.org/10.1007/s00709-007-0283-6

Medlin, L.K. &Kaczmarska, I. (2004) Evolution of the diatoms: V. Morphological and cytological support for the major clades and a taxonomic revision. Phycologia 43: 245–270.
http://dx.doi.org/10.2216/i0031-8884-43-3-245.1

Nakata, K. (1987) The fine structure of two marine diatom species of the family Cymatosiraceae. Bulletin of Tokai Regional Fisheries Research Laboratory 121: 41–45.

Reichardt, E. (1999) Zur Revision der Gattung Gomphonema. Die Arten um G.affine/insigne, G.angustatum/micropus, G.acuminatum sowie gomphonemoide Diatomeen aus dem Oberoligozan im Bohmen. Iconographia Diatomologica 8, Gantner Verlag K.G., 203 pp.

Riaux-Gobin, C. & Chrétiennot-Dinet, M.J. (2000) Extubocellulus spinifer (Hargraves et Guillard) Hasle, von Stosch et Syvertsen (Bacillariophyceae) in North Brittany. Botanica Marina 43: 537–539.
http://dx.doi.org/10.1515/BOT.2000.053

Rivera, P., Cruces, F. & Inostroza, I. (2010) Extubocellulus spinifer (Hargraves & Guillard) Hasle, Stosch & Syvertsen (Cymatosiraceae, Bacillariophyceae): First report of the species from the Southeastern Pacific with comments on the variability of some of its morphological features. Gayana Botanica 67(2): 153–157.

Ross, R., Cox, E.J., Karayeva, N.I., Mann, D.G., Paddock, T.B.B., Simonsen, R., & Sims, P.A. (1979) An amended terminology for the siliceous components of the diatom cell. Beiheft zür Nova Hedwigia, 64: 513–533.

Ross, R.& Sims, P.A. (1987) Further genera of the Biddulphiaceae (diatoms) with interlocking linking spines. Bulletin of the British Museum Natural History (Botany Series)16(4): 269–311.

Round, F.E., Crawford, R.M. & Mann, D.G. (1990) The diatoms: biology & morphology of the genera. Cambridge University Press, 747 pp.

Sabbe, K., Vanelslander, B., Ribeiro, L., Witkowski, A., Muylaert, K. & Vvyerman, W. (2010) A new genus, Pierrecomperia gen. nov., a new species and two new combinations in the marine diatom family Cymatosiraceae. Vie et Milieu 60: 243–256.

Salah, M.M. (1955) Some new diatoms from Blakeney Point (Norfolk). Hydrobiologia 7: 88–102.
http://dx.doi.org/10.1007/BF00189799

Sato, S. (2010) Valve and girdle band morphogenesis in a bipolar centric diatom Plagiogrammopsis vanheurckii (Cymatosiraceae, Bacillariophyta). European Journal of Phycology 45(2): 167–176.
http://dx.doi.org/10.1080/09670260903568483

Scheschukova-Poretzkaja, V.S. (1962) Novie i redkie Bacillariophyta iz diatomovoi sviti Sakhalina. Uchenie zapiski Leningradskogo Gosudarstvennogo Universiteta imeni A.A. Zhdanova, seriia biologicheskikh nauk 49: 203–211.

Simonsen, R. (1987) Atlas and catalogue of the diatoms types of Friedrich Hustedt. Cramer, Berlin Stuttgart.

Snoeijs, P. & Potapova, M. (1995) Intercalibration and distribution of diatom species in the Baltic Sea, vol. 3. Opulus Press Upsala, 125 pp.

Snoeijs, P.& Balashova, N. (1998) Intercalibration and distribution of diatom species in the Baltic Sea, vol. 5. Opulus Press Upsala, 144 pp.

Sorhannus, U. (2004) Diatom phylogenetics inferred based on direct optimization of nuclear-encoded SSU rRNA sequences. Cladistics 20: 487–497.
http://dx.doi.org/10.1111/j.1096-0031.2004.00034.x

Sorhannus, U. (2007) A nuclear-encoded small-subunit ribosomal RNA timescale for diatom evolution. Marine Micropaleontology 65: 1–12.
http://dx.doi.org/10.1016/j.marmicro.2007.05.002

Takano, H. (1985) A new diatoms from sand-flats in Mikawa Bay, Japan. Bulletin of the Tokai Regional Fisheries Laboratory 115: 29–37.

Thomsen, H.A., Buck, K.R., Marino, D., Sarno, D., Hansen, L.E., Østergaard, J.B. & Krupp, J. (1993) Lennoxia faveolata gen. et sp. nov. (Diatomophyceae) from South America, California, West Greenland and Denmark. Phycologia 32: 278–283.
http://dx.doi.org/10.2216/i0031-8884-32-4-278.1

Van Heurck, H. (1881) Synopsis des Diatomees de Belgique, Atlas. fasc. 3: pl. 31–53. Antwerp.

Van Heurck, H. (1885) Synopsis des Diatomees de Belgique, Texte.235 pp., pl. a–c, Antwerp.

Williams, D.M. (2007) Classification and diatom systematics: the past, the present, and the future. In Unravelling the Algae: the Past, the Present and Future of Algal Systematics (Ed. by J. Brodie & J. Lewis), pp. 57–91. CRC Press, Boca Raton.

Witkowski, A., Lange-Bertalot, H. & Metzeltin, D. (2000) Diatom flora of marine coasts I. Iconographia Diatomologica 7, Gantner Verlag K.G., 925 pp.

Witkowski, J., Sims, P.A. & Harwood, D.M. (2011) Rutilariaceae redefined: a review of fossil bipolar diatom genera with centrally positioned linking structures, with implications for the origin of pennate diatoms. European Journal of Phycology 46: 378–398.
http://dx.doi.org/10.1080/09670262.2011.629685

Yanagisawa, Y. (1994) Koizumia Yanagisawa gen. nov., a new marine fossil araphid diatom genus. Transactions and Proceedings of the Palaeontological Society of Japan, new series 176: 591–617.

Yanagisawa, Y. (1995a) Cenozoic diatom genus Rossiella Desikachary et Maheshwari: An emended description. Transactions and Proceedings of the Palaeontological Society of Japan, new series 177: 1–20.

Yanagisawa, Y. (1995b) Cenozoic diatom genus Bogorovia Jousé: An emended description. Transactions and Proceedings of the Palaeontological Society of Japan, new series 177: 21–42.


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