Interactions between Bonamia ostreae (Protozoa: Ascetospora) and hemocytes of Ostrea edulis and Crassostrea gigas (Mollusca: Bivalvia): Entry mechanisms
1992
Abstract Entry mechanisms of the intrahemocytic parasite Bonamia ostreae (Ascetospora) into hemocytes of the sensitive ( Ostrea edulis ) and a resistant ( Crassostrea gigas ) oyster species have been analyzed. The study was based upon the development of a B. ostreae -hemocyte in vitro system. Ultrastructural features and Cytochalasin B sensitivity of the phenomenon demonstrate that B. ostreae enters into the two oyster species hemocytes by host-specified phagocytosis, although parasite contribution to entry into O. edulis hemocytes cannot be discarded. Possible receptors and the postphagocytic fate of the parasite are discussed.
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