g2-top2.jpg (14342 bytes)

Bio E-Lab

       
Ceratium      
ceratium1e1.GIF (24605 bytes)
     
Protozoa Table of Contents BIO 232 Table of Contents Next Organism
 
Ceratium is a dinoflagellate with an armored coating of cellulose plates. Dinoflagellates are distributed worldwide in marine, freshwater, and brackish habitats. They have two flagella, one lying in a transverse surface furrow called the annulus and one in a longitudinal furrow, the sulcus.

Dinoflagellates are famous for their bioluminescence and for population explosions called blooms which, in some species cause red tides that can be highly toxic to other wildlife and lead to paralytic shellfish poisoning in humans.