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Anesthesia and transport of fat snook Centropomus parallelus with the essential oil of Nectandra megapotamica(Spreng.) Mez Neotropical Ichthyology
Tondolo,Juliana Simoni Moraes; Amaral,Lúcio de Paula; Simões,Larissa Novaes; Garlet,Quelen Iane; Schindler,Bianca; Oliveira,Teodoro Martins; Silva,Bruno Ferreira da; Gomes,Levy de Carvalho; Baldisserotto,Bernardo; Mallmann,Carlos Augusto; Heinzmann,Berta Maria.
This study analyzed the chemical composition and anesthetic potential of essential oil (EO) of Nectandra megapotamica in fat snook (Centropomus parallelus). For the extraction of EO by hydrodistillation, leaves were separated in young (EO-Y) or old (EO-O), and the chemical composition of the EOs was determined by CG-MS. The anesthetic potential was assessed by the evaluation of induction and recovery time of anesthesia and stress response from anesthesia and transport. Three experiments were carried out: i) four different concentrations of each EO were tested to evaluate anesthesia induction and recovery time; ii) two concentrations of EO-O were tested for the evaluation of its effects on stress parameters (glucose, lactate, and Na+ and K+ plasma levels)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Ionoregulation; Sedation; Stress; Terpenoids.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000300667
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Dietary protein levels in Piaractus brachypomus submitted to extremely acidic or alkaline pH Ciência Rural
Garcia,Luciano de Oliveira; Gutiérrez-Espinosa,Mariana; Wásquez-Torres,Walter; Baldisserotto,Bernardo.
The objective this study was to evaluate the effects of dietary protein levels in pirapitinga, Piaractus brachypomus, submited to extremely acidic or alkaline pH. Juveniles were fed for 20 days with three diets with different crude protein (CP) levels (25.3, 32.4 and 40.0%) and then separated in five groups (n=10, three replicates each) which were kept in 60 L aquaria and exposed to pH 3.0, 3.5, 7.0, 10, or 10.5. Fish were removed from aquaria when they showed loss of swimming balance, and then blood was collected and plasma separated for measurement of Na+, Cl- and K+ levels. The increase of dietary protein levels (up to 40.0% CP) provided some protection for pirapitinga at pH 3.5 or 10.0 because the time to lose equilibrium increased after acute...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pirapitinga; Fish; Ionoregulation; Extreme pH.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000200017
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Net ion fluxes and ammonia excretion during transport of Rhamdia quelen juveniles Ciência Rural
Garcia,Luciano de Oliveira; Barcellos,Leonardo José Gil; Baldisserotto,Bernardo.
The objective of this study was to verify net ion fluxes and ammonia excretion in silver catfish transported in plastic bags at three different loading densities: 221, 286 and 365g L-1 for 5h. A water sample was collected at the beginning and at the end of the transport for analysis of water parameters. There was a significant positive relationship between net ion effluxes and negative relationship between ammonia excretion and loading density, demonstrated by the following equations: Na+: y-24.5-0.27x, r2=0.99, Cl-: y=40.2-0.61x, r2=0.98, K+: y=8.0-27.6x, r2=0.94; ammonia excretion: y=-11.43+0.017x, r2=0.95, where y: net ion flux (mmol kg-1 h-1) or ammonia excretion (mg kg-1 h-1) and x: loading density (g). Therefore, the increase of loading density...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Fish transport; Ionoregulation; Load density.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001854
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Plasma ion levels of freshwater and marine/estuarine teleosts from Southern Brazil Neotropical Ichthyology
Becker,Alexssandro Geferson; Gonçalves,Jamile Fabbrin; Toledo,Jaderson dos Anjos; Burns,Marcelo D. M.; Garcia,Luciano de Oliveira; Vieira,João Paes; Baldisserotto,Bernardo.
The purpose of this study was to investigate Na+, Cl-, K+, Ca2+, and Mg2+ levels in the plasma of freshwater and marine/estuarine teleosts collected at different salinities (0 to 34) from the estuarine and freshwater portions of the São Gonçalo channel in Southern Brazil. Any relationship between plasma ion levels and salinity and the capacity of ionic regulation of teleosts found at three or more different salinities (Genidens barbus and Micropogonias furnieri) was also investigated. Results showed no relationship between plasma ion levels and salinity when considering all species together, but the two species collected from three or more different salinities showed a significant positive relationship between plasma ion levels and salinity, indicating...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ariidae; Estuaries; Ionoregulation; Osmoregulation; Salinity; Sciaenidae.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400021
Registros recuperados: 4
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