Effects of clove oil on the stress response of matrinxã (Brycon cephalus) subjected to transport

Abstract

Fish transport is one of the most stressful procedures in aquaculture facilities. The present work evaluated the stress response of matrinxã to transportation procedures, and the use of clove oil as an alternative to reduce the stress response to transport in matrinxã (Brycon cephalus). Clove oil solutions were tested in concentrations of 0, 1, 5 and 10 mg/L during matrinxã transportation in plastic bags, supplied with water and oxygen as the usual field procedures in Brazil. Clove oil reduced some of the physiological stress responses (plasma cortisol, glucose and ions) that we measured. The high energetic cost to matrinxã cope with the transport stress was clear by the decrease of liver glycogen after transport. Our results suggest that clove oil (5 mg/l) can mitigate the stress response in matrinxã subjected to transport. KEY WORDSmatrinxã Brycon cephalus, transport, stress, clove oil.Efeito do óleo de cravo na resposta de estresse do matrinxã (Brycon cephalus) submetido ao transporte. RESUMO O transporte de peixes vivos é certamente um dos principais estímulos adversos à homeostase dos peixes nas condições de criação em cativeiro. O presente trabalho mensurou o estresse do matrinxã (Brycon PALAVRAS-CHAVEmatrinxã Brycon cephalus, transporte, estresse, óleo de cravo.

Salinity does not alter the effectiveness of menthol as an anesthetic and sedative during the handling and transport of juvenile fat snook (Centropomus parallelus)

“…However, in this study, no significant differences in ammonia concentration were found between the different treatments at each salinity level. A study conducted by Inoue et al (2005) reported that the addition of clove oil (5 mg L -1 ) during the transport of matrinxã (Brycon amazonicus) did not elicit significant effects on ammonia concentrations, despite its efficacy at reducing the stress response of fish during transport.…”

“…Anesthetization therefore ensures that the fish are handled correctly (Inoue et al, 2003(Inoue et al, , 2005Small, 2003).…”

LD5o of the bacteria Aeromonas hydrophila to matrinxã, Brycon amazonicus

“…Although some researchers have already described techniques to minimize the stress effects on matrinxã Roubach et al 2001;Urbinati and Carneiro 2001;Inoue et al 2002;Inoue et al 2004;Urbinati et al 2004;Inoue et al 2005), their application can only minimize the stress responses during the stressor agent and, consequently, the mortality rates. Therefore, the adverse effects of the stress responses after stressor agents are still an issue and must be overcome.…”

Biochemical parameters of silver catfish (Rhamdia quelen) after transport with eugenol or essential oil of Lippia alba added to the water

“…In the current study, the addition of EUG and EOL to the transport water prevented the increase in lactate levels observed in control silver catfish tissues, suggesting a reduction in anaerobic metabolism under these sedating conditions. Matrinxã (Brycon amazonicus) anesthetized with benzocaine or 2-phenoxyethanol or transported in water containing clove oil also presented lower lactate levels (Inoue et al, 2004(Inoue et al, , 2005. The results of the present study suggest that the addition of EUG and EOL may reduce oxygen consumption, ultimately improving the physiological condition of fish during transport.…”