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The morphological changes in leukocytes of goldfish with bacterial hemorrhagic septicemia were reported. One sample was served at the Laboratory of Pathology of Aquatic Organisms of CAUNESP, Unesp in Jaboticabal. The fish showed lethargy, erratic swimming and without force, slight loss of balance, trying constantly to the water surface. In the body inspection, areas of petechial hemorrhage at the base of the pectoral fins, pelvic fins and caudal fin were observed, beyond the periocular and oral orbitand anal. Blood smears presented hiperactivated monocytes, performing erythrophagocytosis and leukophagocytosis, the cytoplasm of neutrophils presented basophilia and vacuolization, beyond immunocytes, immature leukocytes with anisocytosis and anisokaryosis. The morphological changes described in this study revealed part of the pathogenesis and organic response of Kinguio with bacterial hemorrhagic septicemia. Then, the qualitative analysis of blood cells should also be used as a complementary tool to study the general health status of fish farmed.

revista brasileira de ciência veterinária

Distúrbios morfológicos em leucócitos de exemplar de kinguio (Carassius auratus auratus Linnaeus, 1758) com septicemia hemorrágica bacteriana: relato de caso