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Histologycal and behavioral alterations induced by the inoculation of bacterial suspension (Aeromonas hydrophila) in jundiá (Rhamdia quelen)

The purpose of this study was to evaluate the histological and behavior alterations induced by the inoculation of different concentrations of Aeromonas hydrophila in jundiás. Eighty (80) animals were used in this study, with 16.55g of weight and 13.23cm of length. Different bacterial concentrations (3.6 x 10(7) and 7.5 x 10(6)UFC - Unity Formation of Colony/ml of saline solution) were inoculated intramuscularly. The animals were kept for 10 days in amianthus aquarium (250 liters) with similar conditions of temperature, pH, alkalinity and hardness. The jundiás were observed daily and the dying ones were used for histological cuts. It was verified that the Aeromonas hydrophila caused balance loss, apathy, exophthalmia and histological alterations like necrosis, hemorrhage and inflammatory infiltrated, reaching the epidermis layer as well as the derme and musculature.

ictiopathology; A. hydrophila; jundiá

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