An ultrastructural study of Amphidinium poecilochroum (Dinophyceae), a phagotrophic dinoflagellate feeding on small species of cryptophytes

Abstract

The general ultrastructure of A. poecilochroum is typical of dinoflagellates. The proximal part of the longitudinal flagellum possesses a previously undescribed structure consisting of three dense rods running alongside, and attached to, the axoneme. Hexagonal vesicles containing crystalline rods are found regularly in the cell.