Fine structure of the longitudinal flagellum in Ceratium tripos, a marine dinoflagellate.

The fine structure of Ceratium tripos, a marine armored dinoflagellate. II. Cytokinesis and development of the characteristic cell shape.

Extraction model of the longitudinal flagellum of Ceratium tripos (Dinoflagellida): reactivation of flagellar retraction.

The mechanism of retraction of the longitudinal flagellum of Ceratium tripos was studied by making extracted models of the flagellum. Non-detergent models extracted in low ionic strength medium containing 1 M-glucose, 10 mM-EDTA, and 50 mM-Tris X HCl buffer (pH 8.0), retracted when Ca2+, Mg2+, Ba2+, Sr2+, Mn2+ or Cd2+ was applied locally with a glass capillary. A demembranated model of the flag...

Heavy Metal Ions on Titanium Dioxide Nano-Particle: Biomagnification in an Experimental Aquatic Food Chain

Heavy metal metals are non-biodegradable, have a remarkable ability to transfer through food chains and are potentially toxic for organisms.They are introduced tomarine environment via different anthropogenic sources. In this study, the ability of titanium dioxide nano-particle in transfer of Cr, Cu, Pb and Se metal through an aquatic food chain involving Ceratium tripos as the phytoplankton Da...

Species- and stratification-dependent diel vertical migration behaviour of three dinoflagellate species in a laboratory study

This study shows that different species of the same genus can behave differently in relation to a salinity gradient and suggests that a halocline can act as a barrier to the diel vertical migration (DVM) of dinoflagellate species. In a laboratory study, we found that the dinoflagellates Ceratium furca, C. tripos and Dinophysis acuta did not cross a salinity gradient of 5 psu, but instead exhibi...

Neoceratium gen. nov., a new genus for all marine species currently assigned to Ceratium (Dinophyceae).

The dinoflagellate genus Ceratium contains marine and freshwater species. Freshwater species possess six cingular plates, thick plates in the concave ventral area and usually develop a third hypothecal horn. The marine Ceratium species (>62 species) possess five cingular plates and thin plates in the concave ventral area; a third hypothecal horn is atypical. Resting cysts, a common feature in t...