Diversity and morphology of calcareous dinophytes (Thoracosphaeraceae, Peridiniales)

摘要: Dinophytes are unicellular eukaryotic algae that, together with their closest relatives, ciliates and apicomplexans, belong to the superphylum of alveolates. Some them, namely calcareous dinophytes (Thoracosphaeraceae, Peridiniales), develop an immotile calcareous cell during life history. They accumulate in oceans’ sediments analogously to terrestrial seed banks. Although diversity calcareous was investigated in several studies, only a few them provide data from coastal waters and sediments. The main goal this thesis record marine environments using morphological, anatomical, taxonomical evolutionary approaches. An essential part project establish living dinophyte cultures, assuring constant access fresh material for morphological molecular analysis (chapters 1-5). The morphological extant species as well those described fossil was documented (chapter 1), conflict between was presented Furthermore, detailed descriptions two new species, Scrippsiella bicarinata und S. kirschiae 2) of Bysmatrum sp., doubtful phylogenetic position 4), were provided. Scrippsiella trochoidea (basionym: Glenodinium trochoideum), previously ambiguous description, has been redescribed epitypified by myself based on material collected type locality assure reliable determination (Chapter 3). Comparative ultrastructure investigations light electron microscopic techniques at various stages cycle showed that anatomical structure the biomineralization processes differs within subgroups 5) and could be used useful trait.