CHEMOSENSORY CAPABILITIES IN THE PHAGOTROPHIC DINOFLAGELLATE <em>GYMNODINIUM FUNGIFORME</em>.

Suggests that the non-photosynthetic, phagotrophic dinoflagellate, Gymnodinium fungiforme Anissimova is attracted to a variety of amino acids and other organic compounds. Most abundant free amino acids found in invertebrates and protozoa which are major food sources of denoflagellate; Exposure of species of cultured heterotrophic dinoflagellates to the water soluble fraction of a shrimp extract known to attract G. fungiforme.