Modificación de los parámetros inmunitarios hemolinfáticos en el ostión del norte (Argopecten purpuratus Lamarck, 1819) afectados por el cuadro de retracción del manto

the scallop argopecten purpuratus is characterized by variations in some immunity parameters of the hemolymph when faced with the pathology known as mantle retraction. a relationship between the hemocytic reaction of encapsulation and this pathology was established with light and electronic transmission microscopy. the quantitative comparison of the number of hemocytes, the phagocytic capacity of these cells in the presence of yeasts, and the cytotoxicity of the hemolymph in specimens with and without mantle retraction showed that the hemocytes and serum of scallops with mantle retraction respond differently. when mantle retraction is observed, the number of circular he-mocytes decreases. in exchange, the serum increases its cytotoxic capacity when faced with erythrocytes. on the other hand, when the yeasts were previously incubated in this serum, the phagocytic capacity of the hemocytes decreased. the results show that the pathology known as mantle retraction in the scallop determines a significant variation in cellular immunity and the humoral components of the hemolymph, and an encapsulation response in the presence of coalescent bodies in the mantle