Two new marine species of Cocconeis (Bacillariophyceae) from the west coast of Sweden

  • Adil Y. Al-Handal Department of Biological and Environmental Sciences, University of Gothenburg, Göteborg, Sweden.
  • Catherine Riaux-Gobin LABEX “CORAIL”, PSL USR 3278 CNRS-EPHE, CRIOBE-Université de Perpignan, FR-66860, France.
  • Regine Jahn Botanischer Garten und Botanisches Museum Berlin-Dahlem, Freie Universität Berlin, Germany.
  • Angela Katarina Wulff Department of Biological and Environmental Sciences, University of Gothenburg, Göteborg, Sweden.
  • Alison Minerovic The Academy of Natural Sciences of Drexel University, Philadelphia, PA 19103, USA.
DOI: https://doi.org/10.5852/ejt.2019.497
Keywords: Cocconeis, diatoms, epiphytes, marine, new species, Sweden

Abstract

This paper is part of a project of studying benthic diatom biodiversity on marine coastal regions of Sweden with focus on rare and less known species. Two new species of Cocconeis Ehrenb. are described from Vrångö, a small island in the west coast of Sweden. Both species were found as epiphytic on the green alga Ulva intestinalis L. Cocconeis magnoareolata Al-Handal, Riaux-Gob., R.Jahn & A.K.Wulff sp. nov. is a small species not exceeding 9 µm in length and characterized by having large subquadrangular areolae on the sternum valve. Cocconeis vrangoensis Al-Handal & Riaux-Gob. sp. nov. appears similar to some taxa of the ‘Cocconeis scutellum complex’, but differs by its stria density on both valves and variable features of the areola and valvocopula ultrastructure. Detailed descriptions based on light and electron microscopy examination, a comparison with closely related taxa, as well as a description of the habitat of both species are here presented.

References

De Stefano M., Marino D. & Mazzella L. 2000. Marine taxa of Cocconeis on leaves of Posidonia oceanica, including a new species and two new varieties. European Journal of Phycology 35: 225–242. https://doi.org/10.1080/09670260010001735831

De Stefano M., Romero O.E. & Totti C. 2008. A comparative study of Cocconeis scutellum Ehrenberg and its varieties (Bacillariophyta). Botanica Marina 51: 506–536. https://doi.org/10.1515/BOT.2008.058

Edsbagge H. 1968. Zur Ökologie der marinen angehefteten Diatomeen. Botanica Gothoburgensia 6: 139.

Guiry M.D. & Guiry G.M. 2018. AlgaeBase. National University of Ireland, Galway. Available from http://www.algaebase.org [accessed Feb. 2018].

Hendey N. I. 1951. Littoral diatoms of Chichester Harbour with special reference to fouling. Journal of the Royal Microscroscopic Society 71: 1–86. https://doi.org/10.1111/j.1365-2818.1951.tb01951.x

Holmes R.W., Crawford R.M. & Round F.E. 1982. Variability in the structure of the genus Cocconeis Ehr. (Bacillariophyta) with special reference to the cingulum. Phycologia 21: 370–381. https://doi.org/10.2216/i0031-8884-21-3-370.1

Hustedt F. 1933. Die Kieselalgen Deutschlands, Osterreichs und der Schweiz unter Berucksichtigung der ubrigen Lander Europas sowie der angrenzenden Meeresgebiete. In: Rabenhorst L. & Grunow A., Dr. L. Rabenhorst’s Kryptogninen-Flora Lion Deutschland, Osterreich und der Schweiz 7, Teil 2 (3,4): 321–576. Akademische Verlagsgesellschaft, Leipzig.

Jahn R., Kusber W.H. & Romero O.E. 2009. Cocconeis pediculus Ehrenberg and C. placentula Ehrenberg var. placentula (Bacillariophyta): Typification and taxonomy. Fottea 9: 275–288.

Kristiansen T. & Eyvind A. 2015. Water type quantification in the Skagerrak, the Kattegat and off the Jutland west coast. Oceanologia 57: 177–195. https://doi.org/10.1016/j.oceano.2014.11.002

Leskinen E., Alström-rapaport C. & Pamilo P. 2004. Phylogeographical structure, distribution and genetic variation of the green algae Ulva intestinalis and U. compressa (Chlorophyta) in the Baltic Sea area. Molecular Ecology 13: 2257–2265. https://doi.org/10.1111/j.1365-294X.2004.02219.x

Litchman E., Klausmeier C.A., Miller J.R., Schofield O.M. & Falkowski P.G. 2006. Multi-nutrient, multi-group model of present and future oceanic phytoplankton communities. Biogeosciences 3: 585–606.

López-Fuerte F.O. & Siqueiros-Beltrones D.A. 2016. A checklist of marine benthic diatoms (Bacillariophyta) from Mexico. Phytotaxa 282: 201–258. https://doi.org/10.11646/phytotaxa.283.3.1

Mizuno M. 1987. Morphological variation of the attached diatom Cocconeis scutellum var. scutellum (Bacillariophyceae). Journal of Phycology 23: 591–597. https://doi.org/10.1111/j.1529-8817.1987.tb04211.x

Reynolds C.S., Huszar V., Kruk C., Naselli-Flores L. & Melo S. 2002. Towards a functional classification of the freshwater phytoplankton. Journal of Plankton Research 24: 417–428. https://doi.org/10.1093/plankt/24.5.417

Riaux-Gobin C. 1991. Diatomées d'une vasiére intertidale du Nord Finistère (Dourduff): genres Cocconeis, Campyloneis, Delphineis, Mastogloia et Raphoneis. Diatom Research 6: 125–135. https://doi.org/10.1080/0269249X.1991.9705151

Riaux-Gobin C. & Compère P. 1996. Observations sur le polymorphisme de Cocconeis californica Grunow, aux îles Kerguelen. Diatom Research 11: 89–103. https://doi.org/10.1080/0269249X.1996.9705367

Riaux-Gobin C., Romero E., Coste M. & Galzin R. 2013. A new Cocconeis (Bacillariophyceae) from Moorea Island, Society Archipelago, South Pacific Ocean with distinctive valvocopula morphology and linking system. Botanica Marina 56: 339–356. https://doi.org/10.1515/bot-2012-0162

Riaux-Gobin C., Compère P. & Jordan R.W. 2015. Cocconeis Ehrenberg assemblage (Bacillariophyceae) from Napuka Atoll (Tuamotu Archipelago, South Pacific) with description of two new taxa. Diatom Research 30: 175–196. https://doi.org/10.1080/0269249X.2015.1021839

Riznyk R.Z. 1973. Interstitial diatoms from two tidal flats in Yaquina Estuary, Oregon, USA. Botanica Marina 16: 113–138. https://doi.org/10.1515/botm.1973.16.3.113

Romero O.E. & Navarro J.N. 1999. Two marine species of Cocconeis Ehrenberg (Bacillariophyceae): C. pseudomarginata Gregory and C. caribensis sp. nov. Botanica Marina 42: 581–592. https://doi.org/10.1515/BOT.1999.065

Sar E.A., Romero O. & Sunesen I. 2003. Cocconeis Ehrenberg and Psammococconeis Garcia (Bacillariophyta) from the Gulf of San Matia, Patagonia, Argentina. Diatom Research 18: 79–106. https://doi.org/10.1080/0269249X.2003.9705575

Suzuki H., Nagumo T. & Tanaka J. 2001. Morphology of the marine epiphytic diatom Cocconeis convexa Giffen (Bacillariophyceae). Diatom 17: 59–68. https://doi.org/10.11464/diatom1985.17.0_59

Suzuki H., Nagumo T. & Tanaka J. 2005. A new marine diatom Cocconeis sagaraensis Hid. Suzuki (Bacillariophyceae) from Japan. Journal of Japan Botany 80: 176–185.

Turland N.J., Wiersema J.H., Barrie F.R., Greuter W., Hawksworth D.L., Herendeen P.S., Knapp S., Kusber W.-H., Li D.-Z., Marhold K., May T.W., McNeill J., Monro A.M., Prado J., Price M.J. & Smith G.F. (eds.) 2018. International Code of Nomenclature for Algae, Fungi, and Plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. [Regnum Vegetabile 159.] Koeltz Botanical Books, Glashütten. https://doi.org/10.12705/Code.2018

VanLandingham S.L. 1979. Catalogue of the Fossil and Recent Genera and Species of Diatoms and their Synonyms 7: 4242–4654. J. Cramer, Vaduz.

Published
2019-02-12
How to Cite
Al-Handal, A. Y., Riaux-Gobin, C., Jahn, R., Wulff, A. K., & Minerovic, A. (2019). Two new marine species of Cocconeis (Bacillariophyceae) from the west coast of Sweden. European Journal of Taxonomy, (497). https://doi.org/10.5852/ejt.2019.497
Issue
No. 497 (2019): Two new marine species of Cocconeis (Bacillariophyceae) from the west coast of Sweden
Section
Botany

Copyright (c) 2019 Adil Y. Al-Handal, Catherine Riaux-Gobin, Regine Jahn, Angela Katarina Wulff, Alison Minerovic

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