Net ion fluxes and ammonia excretion during transport of Rhamdia quelen juveniles

Garcia, Luciano de Oliveira; Barcellos, Leonardo José Gil; Baldisserotto, Bernardo

doi:10.1590/0103-8478cr20141420

Cited by 4 publications

(3 citation statements)

References 22 publications

(25 reference statements)

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“…Garcia, Barcellos and Baldisserotto () applied three load densities (221, 286 and 365 g/L) to a R. quelen transport, and observed increases in effluxes of Na + , K + , and Cl − , and ammonia excretion with the increase in load density, as observed in this study. The lower electrical conductivity observed at the highest load density of tambaqui in the transport simulation with LAH is probably due to the lower ion effluxes and ammonia excretion.…”

Section: Discussionsupporting

confidence: 79%

Lippia alba(Verbenaceae) hydrolate as sedative of tambaqui (Colossoma macropomum) juveniles in simulated transport conditions

et al. 2017

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Lippia alba hydrolate (LAH) is produced as a secondary product in essential oil extraction. The objective of this study was to evaluate the use of LAH in a simulation of the transport of tambaqui (Colossoma macropomum) juveniles. A series of 17 hr simulations were performed using load densities of 30, 60 and 90 juveniles per L and four LAH concentrations of 0.4%, 1%, 2% and 5%, with a control of just water. Fish survival, temperature, dissolved oxygen, conductivity, pH, ammonia excretion, alkalinity water hardness and net Na+, K+, Cl‐ fluxes, were all evaluated before and after the transport simulations. Mucous cell densities in the gills were also determined microscopically, post simulation. The results showed that addition of 5% LAH achieved better survival during the simulation than the water control. Dissolved oxygen was significantly lower with an increased load density. Also, conductivity, NH4 excretion and net ionic fluxes (K+ and Cl−) were lower with 5% LAH, although mainly where higher load densities were tested. Mucous cell density was lower in LAH concentrations of 2% and 5%, again with higher load densities. In view of these findings, it is suggested that 5% LAH is an effective sedative for use in the transport of tambaqui, mainly with high load densities. This work is the first study of LAH and highlights its potential applications in aquaculture management.

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Section: Discussionsupporting

confidence: 79%

Lippia alba(Verbenaceae) hydrolate as sedative of tambaqui (Colossoma macropomum) juveniles in simulated transport conditions

et al. 2017

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“…Net ion fluxes provided a good correlation with the stress of transport for silver catfish (Becker et al, 2012(Becker et al, , 2013Parodi et al, 2014;Zeppenfeld et al, 2014;Garcia et al, 2015). Sedation with eugenol and the EOs of L. alba and A. triphylla also reduced ammonia excretion and ion loss in silver catfish (Becker et al, 2012(Becker et al, , 2016Parodi et al, 2014;Zeppenfeld et al, 2014), methanolic extract of Condalia buxifolia and the EOs of Cunila galioides and Origanum majorana decreased ion loss in silver catfish (Becker et al, 2013;Cunha et al, 2017).…”

Section: Tab 2 Water Parameters After 8 H Exposure Ofmentioning

confidence: 84%

Essential oils from Citrus x aurantium and Citrus x latifolia (Rutaceae) have anesthetic activity and are effective in reducing ion loss in silver catfish ( Rhamdia quelen )

et al. 2018

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This study investigated the anesthetic effect of the essential oils (EOs) from the peel of Citrus x aurantium (EOCA) and Citrus x latifolia (EOCL) on silver catfish Rhamdia quelen. Fish were exposed to different concentrations of EOCA and EOCL to determine time of anesthesia induction and recovery. Induction of anesthesia was observed in all fish exposed to 400, 600 or 800 μL L−1 EOCA and 300, 400 or 500 μL L−1 EOCL. Another group of fish were exposed for 8 h to 50, 100, or 200 μL L−1 of either EOs. Overall, fish exposed to ethanol and both EOs presented higher ventilatory frequencies (VF) than the control group throughout the 8 h of exposure. Net ion (Na+, K+ and Cl−) effluxes and ammonia excretion were significantly lower in fish exposed to 50, 100 or 200 μL L−1 of either EOs compared to control fish. Mortality was 37% in fish exposed to 200 μL L−1 of either EOs after 8 h. These findings suggest that EOCA and EOCL are useful anesthetics and sedatives for Rhamdia quelen, but their usefulness as alternatives to reduce stress in fish transportation at the lower concentrations tested (50-100 µL L−1) deserves further study.

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“…In addition, transport significantly decreased corticotrophin-releasing hormone ( crh ) and urotensin I ( ui ) expression levels in the brain of Coilia nasus and induced oxidative stress (Du et al, 2015). Furthermore, stress by transport induced an osmotic imbalance with ion loss in freshwater fish, showing a good correlation with transport stress (Becker et al, 2013, 2016; Parodi et al, 2014; Zeppenfeld et al, 2014; Garcia et al, 2015; Ostrensky et al, 2016; Teixeira et al, 2018; Table 2). Thus, during or prior to transport, sedation of the fish is desirable to reduce or prevent stress.…”

Section: Effects Of Eos During Different Stress Eventsmentioning

confidence: 92%

Essential Oils as Stress-Reducing Agents for Fish Aquaculture: A Review

et al. 2019

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In fish, stressful events initiate a hormone cascade along the hypothalamus-pituitary-interrenal and hypothalamus-sympathetic-chromaffin (HSC) axis to evoke several physiological reactions in order to orchestrate and maintain homeostasis. Several biotic and abiotic factors, as well as aquaculture procedures (handling, transport, or stocking density), activated stress system inducing negative effects on different physiological processes in fish (growth, reproduction, and immunity). In order to reduce these consequences, the use of essential oils (EOs) derived from plants has been the focus of aquaculture studies due to their diverse properties (e.g., anesthetic, antioxidant, and antimicrobial), which have been shown to reduce biochemical and endocrine alterations and, consequently, to improve the welfare status. Recently, several studies have shown that biogenic compounds isolated from different EOs present excellent biological activities, as well as the nanoencapsulated form of these EOs may potentiate their effects. Overall, EOs presented less side effects than synthetic compounds, but their stress-reducing efficacy is related to their chemical composition, concentration or chemotype used. In addition, their species-specific actions must be clearly established since they can act as stressors by themselves if their concentrations and chemotypes used are not suitable. For this reason, it is necessary to assess the effect of these natural compound mixtures in different fish species, from marine to freshwater, in order to find the ideal concentration range and the way for their administration to obtain the desired biological activity, without any undesired side effects. In this review, the main findings regarding the use of different EOs as stress reducers will be presented to highlight the most important issues related to their use to improve fish welfare in aquaculture.

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Net ion fluxes and ammonia excretion during transport of Rhamdia quelen juveniles

Abstract: The objective of this study was to verify net ion fluxes and ammonia excretion in silver catfish r 2 =0.99, r 2 =0.98, r 2 =0.94; r 2 =0.95, em

Cited by 4 publications

References 22 publications

Lippia alba(Verbenaceae) hydrolate as sedative of tambaqui (Colossoma macropomum) juveniles in simulated transport conditions

Lippia alba(Verbenaceae) hydrolate as sedative of tambaqui (Colossoma macropomum) juveniles in simulated transport conditions

Essential oils from Citrus x aurantium and Citrus x latifolia (Rutaceae) have anesthetic activity and are effective in reducing ion loss in silver catfish ( Rhamdia quelen )

Essential Oils as Stress-Reducing Agents for Fish Aquaculture: A Review

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