Organisms Diversity & Evolution

, Volume 12, Issue 4, pp 339–348 | Cite as

Who am I — and if so, how many? Species diversity of calcareous dinophytes (Thoracosphaeraceae, Peridiniales) in the Mediterranean Sea

  • Sylvia Soehner
  • Carmen Zinssmeister
  • Monika Kirsch
  • Marc Gottschling
Original Article

Abstract

The diversity of extant calcareous dinophytes (Thoracosphaeraceae, Dinophyceae) is not fully recorded at present. The establishment of algal strains collected at multiple localities is necessary for a rigorous study of taxonomy, morphology and evolution in these unicellular organisms. We collected sediment and water tow samples from more than 60 localities in coastal areas of the eastern Mediterranean Sea and documented 15 morphospecies of calcareous dinophytes. Internal transcribed spacer (ITS) barcoding identified numerous species of the Scrippsiella trochoidea species complex that were genetically distinct, but indistinguishable in gross morphology (i.e. with the same tabulation patterns of the motile theca and similar spiny coccoid stages). We assessed a possible minimal number of cryptic species using ITS ribotype networks that indicated the existence of at least 21 species within the Scrippsiella trochoidea species complex. Species diversity of calcareous dinophytes appears higher in the Mediterranean Sea than in other parts of the world’s oceans such as the North Sea. Our data underline the importance of field work to record the diversity of calcareous dinophytes and other unicellular life forms.

Keywords

Calcareous dinophytes ITS Ribotype Cryptic species 

Supplementary material

13127_2012_109_MOESM1_ESM.pdf (142 kb)
ESM 1(PDF 142 kb)

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Copyright information

© Gesellschaft für Biologische Systematik 2012

Authors and Affiliations

  • Sylvia Soehner
    • 1
    • 2
  • Carmen Zinssmeister
    • 1
    • 2
  • Monika Kirsch
    • 3
  • Marc Gottschling
    • 1
  1. 1.Department Biologie, Systematische Botanik und Mykologie, GeoBio-CenterLudwig-Maximilians-Universität MünchenMünchenGermany
  2. 2.Fachbereich Geologische Wissenschaften, Fachrichtung PaläontologieFreie Universität BerlinBerlinGermany
  3. 3.Fachbereich Geowissenschaften, Fachrichtung Historische Geologie / PaläontologieUniversität BremenBremenGermany

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