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Bellerochea horologicalis and Lithodesmioides polymorpha var. tunisiense var. nov. (Coscinodiscophyceae, Bacillariophyta) in the Bay of Tunis: ultrastructural observations and spatio-temporal distribution

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Published/Copyright: June 1, 2005
Botanica Marina
From the journal Volume 48 Issue 1

Abstract

Phytoplankton samples were taken along the Tunisian coasts and especially in the Bay of Tunis in the southwestern Mediterranean Sea. Here we report the ultrastructure and the spatio-temporal distribution of two new records for the diatom flora of the Mediterranean Sea: Bellerochea horologicalis and Lithodesmioides polymorpha var. tunisiense var. nov. The new variety can be distinguished from the nominate variety by such morphological features as valve shape, striae density on valve face and mantle, and fine structure of the areolae occlusions. Both diatom taxa are present year-round in the Bay of Tunis, but are most abundant in its southwestern region. They appear to be associated with waters characterised by high turbidity and high nutrient levels. In this region of the Bay of Tunis, both diatom taxa are presented alive in the sediment up to 14 cm deep. B. horologicalis is also present in the Bay of Sousse, whereas L. polymorpha var. tunisiense also occurs in the Gulf of Gabès.

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References

Anonymous. 1975. Proposal for a standardisation of diatom terminology and diagnoses. Nova Hedwigia, Beih. 53: 323–354.Search in Google Scholar

Astraldi, M., G.P. Gasparini, A. Vetrano and S. Vignudelli. 2002. Hydrographic characteristics and interannual variability of water masses in the central Mediterranean: a sensitivity test for long-term changes in the Mediterranean Sea. Deep-Sea Res. I.49:661–680.10.1016/S0967-0637(01)00059-0Search in Google Scholar

Ben Hamadou, R., F. Ibanez, S. Souissi, and A.C. Cathelineau. 2001. Spatial analysis of hydrological and phytoplanktonic data of the Bay of Tunis. Multivariate cartography. Medit. Mar. Sci.2:67–85.10.12681/mms.267Search in Google Scholar

Bianchi, C.N. and C. Morri. 2000. Marine biodiversity of the Mediterranean Sea: situation, problems and prospects for future research. Mar. Pollut. Bull.40:367–376.10.1016/S0025-326X(00)00027-8Search in Google Scholar

Boalch, G.T. 1994. The introduction of non-indigenous marine species to Europe: planktonic species. In: (C.F. Boudouresque, F. Briand and C. Nolan, eds) Introduced species in European coastal waters. European Commission publ., Luxembourg. pp. 28–31.Search in Google Scholar

Carlton, J.T. 1985. Trans-oceanic and inter-oceanic dispersal of coastal marine organisms: the biology of ballast water. Oceanogr. Mar. Biol. Annu. Rev. 23:313–371.Search in Google Scholar

Daly Yahia, M.N. 1998. Dynamique saisonnière du zooplancton de la baie de Tunis (Systématique, écologie numérique et biogéographie méditerranéenne). Ph.D. thesis, University of Tunis II, Tunis. pp. 247.Search in Google Scholar

Daly Yahia-Kéfi, O. 1998. Le phytoplancton de la baie de Tunis: analyse systématique, biogéographique, quantitative et synécologique des diatomées et des dinoflagellés. Ph.D. thesis, University of Tunis II, Tunis. pp. 332.Search in Google Scholar

Dufrêne, M. and P. Legendre 1997. Species assemblages and indicator species: the need for a flexible asymmetrical approach. Ecol. Monogr.67:345–366.10.1890/0012-9615(1997)067[0345:SAAIST]2.0.CO;2Search in Google Scholar

Giacobbe, M.G., F.D. Oliva and G. Maimone. 1996. Environmental factors and seasonal occurrence of the dinoflagellate Alexandrium minutum, a PSP potential producer, in a Mediterranean lagoon. Estuar. Coast. Mar. Sci.42:539–549.10.1006/ecss.1996.0035Search in Google Scholar

Gotsis-Skretas, O. and N. Frigilos. 1990. Contribution to eutrophication and phytoplankton ecology in the Thermaikos Gulf. Thalassographica13:1–12.Search in Google Scholar

Hallegraeff, G.M. 1998. Transport of toxic dinoflagellates via ships' ballast water: bioeconomic risk assessment and efficacy of possible ballast water management strategies. Mar. Ecol. Prog. Ser.168:297–309.10.3354/meps168297Search in Google Scholar

Hasle, G.R. and E.E. Syvertsen. 1996. Marine diatoms. In (C.R. Tomas, ed.) Identifying marine diatoms and dinoflagellates. Academic Press, San Diego. pp. 5–385.Search in Google Scholar

Heldt, H. 1929. Le Lac de Tunis (partie Nord). Résultats des pêches au filet fin. Bull. St. Océanogr. Salambô11:1–74.Search in Google Scholar

Lakkis, S. and V. Novel-Lakkis. 1980. Composition, annual cycle and species diversity of the phytoplankton in Lebanese coastal water. J. Plankton Res.3:123–135.10.1093/plankt/3.1.123Search in Google Scholar

Léger, G. 1973. Diatomées et dinoflagellés de la mer Ligure. Systématique et distribution en juillet 1963. Bull. Inst. Océanogr. Monaco71:1–36.Search in Google Scholar

Margalef, R. 1969. Composicion especifica del fitoplancton de la costa catalano-levantina (Mediterraneo Occidental) en 1962–1967. Inv. Pesq.33:345–380.Search in Google Scholar

Paulmier, G. 1993. Microplancton des eaux marines et saumâtres de la Guyane et des Antilles françaises. ORSTOM editions, Paris. pp. 436.Search in Google Scholar

Romdhane, M.S., H.C. Eilertsen, O. Daly Yahia-Kéfi and M.N. Daly Yahia. 1998. Toxic dinoflagellate blooms in Tunisian lagoons: causes and consequences for aquaculture. In (B. Reguera, J. Blanco, M.L. Fernández and T. Wyatt, eds) Harmful algae. Xunta de Galicia and Intergovernmental Oceanographic Commission of UNESCO, Vigo. pp. 80–83.Search in Google Scholar

Ross, R., E.J. Cox, N.I. Karayeva, D.G. Mann, T.B.B. Paddock, R. Simonsen and P.A. Sims. 1979. An amended terminology for the siliceous components of the diatom cell. Nova Hedwigia, Beih.64:513–533.Search in Google Scholar

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

Saunders, R.P. and D.A. Glenn. 1969. Diatoms. Mem. Hourglass Cruises1:1–119.Search in Google Scholar

Séguin, G. 1968. Le plancton de la côte Nord de la Tunisie (Note préliminaire). Pelagos Bull. Inst. Océanogr. Alger7:73–83.Search in Google Scholar

Souissi S., O. Daly Yahia-Kéfi and M.N. Daly Yahia. 2000. Spatial characterisation of nutrient dynamics in the Bay of Tunis (southwestern Mediterranean) using multivariate analyses: consequences for phyto- and zooplankton distribution. J. Plankton Res.22:2039–2059.10.1093/plankt/22.11.2039Search in Google Scholar

Subrahmanyan, R. 1946. A systematic account of the marine plankton diatoms of the Madras Coast. P. Indian Acad. Sci.24:85–197.10.1007/BF03049673Search in Google Scholar

Throndsen, J. 1995. Estimating cell numbers. In (G.M. Hallegraeff, D.M. Anderson and A.D. Cembella, eds) Manual on harmful marine microalgae. IOC Manuals and Guides 33. UNESCO. pp. 63–80.Search in Google Scholar

Travers, M. 1973. Le microplancton du golfe de Marseille: variations de la composition systématique et de la densité des populations. Téthys5: 31–53.Search in Google Scholar

UNESCO. 1966. Determination of photosynthetic pigments in sea-water. pp. 69.Search in Google Scholar

von Stosch, H.A. 1977. Observations on Bellerochea and Strephtotheca, including descriptions of three new planktonic diatom species. Nova Hedwigia, Beih.54:113–166.Search in Google Scholar

von Stosch, H.A. 1986. Some marine diatoms from the Australian region, especially from Port Phillip Bay and tropical North-Eastern Australia. II. Survey of the Genus Palmeria and of the Family Lithodesmiaceae including the new Genus Lithodesmioides. Brunonia9:29–87.Search in Google Scholar

Zingone, A., R. Casotti, M. Rivera d′Alcala, M. Scardi and D. Marino. 1995. St Martin's summer: the case of an autumn phytoplankton bloom in the Gulf of Naples (Mediterranean Sea). J. Plankton Res.17:575–593.10.1093/plankt/17.3.575Search in Google Scholar

Published Online: 2005-06-01
Published in Print: 2005-01-01

©2005 by Walter de Gruyter Berlin New York

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