Fish anesthesia: effects of the essential oils of Hesperozygis ringens and Lippia alba on the biochemistry and physiology of silver catfish (Rhamdia quelen)

摘要: The anesthetic activities of the essential oils (EOs) Hesperozygis ringens (EOHR) and Lippia alba (EOLA) their effects in silver catfish (Rhamdia quelen) after anesthesia recovery were investigated. Fish (32.19 ± 1.24 g) submitted to one following treatments for each EO: basal group, control, or (150, 300, 450 μL L−1 EO). After that was induced simulated biometric measurements completed, fish transferred anesthetic-free aquaria allow recovery. sampled at 0, 15, 30, 60, 240 min At time 0 recovery, ventilatory rate lower groups anesthetized with either EO. In comparison control showed an increase plasma glucose, aspartate aminotransferase (AST), Na+ levels a reduction Na+/K+-ATPase activity 0 min Plasma ammonia EOLA (450 μL L−1) EOHR (all concentrations), respectively, than fish. Additionally, lactate, AST, alanine aminotransferase, K+ levels, gill H+-ATPase higher EOs promoted slight changes enabled both adaptive response most measured parameters regardless concentration EO used. These findings support use as anesthetics