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The hemocytes of Heliothis armigera: Ultrastructure, functions, and evolution in the course of larval development
M Essawy1, A Maleville1, M Brehélin2
1Laboratoire de Physiologie des Invertébrés, Université des Sciences et Techniques du Languedoc, 34060 Montpellier, France.
Abstract:
Five types of hemocytes, prohemocytes, typical plasmatocytes, coagulocytes, spherule cells, and oenocytoides, have been defined in the last larval instar of Heliothis armigera on the basis of ultrastructural microscopy, smears, and optical phase-contrast microscopy. Modifications in typical plasmatocytes and coagulocytes have been evidenced in the course of development in this instar, which suggests that these hemocytes are involved in physiological processes of development. Only coagulocytes exhibit endocytotic capacities. Phenoloxidase activity was observed in oenocytoides.
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