Atividade da catalase e da lactato desidrogenase em tilápias submetidas a estresse de confinamento: efeito da cor do ambiente

Pereira-da-Silva, Elyara Maria; Melo, Mariza Pires de; Oliveira, Ricardo Henrique Franco de; Pugine, Silvana Marina Piccoli

doi:10.1590/s0103-84782012000500022

Cited by 4 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the significant increase in plasma lactate observed in the present study after air exposure (294.6%) must have resulted from intense anaerobic glycolysis in white muscle tissue. However, there was no change in LDH activity in white muscle for all treatments, response also observed in tilapias O. niloticus subjected to the stress of confinement in blue colour environment (Pereira‐da‐Silva et al, ) or exposed to cadmium (Almeida et al, ).…”

Section: Resultsmentioning

confidence: 51%

Clove oil attenuates stress responses in lambari,Astyanax altiparanae

2019

Self Cite

View full text Add to dashboard Cite

The effects of clove oil anaesthetic on mitigating the physiological responses to air exposure, a stressful and routine situation in fish farming, laboratory conditions and sport fishing (catch and release), were evaluated in lambari (A. altiparanae). Adult females (n = 80) were randomly sorted to receive one of four treatments: control, anaesthesia (clove oil 50 mg/L), stress (5 min air exposure) and pre‐anaesthesia associated to stress. Their cortisol, glucose, lactate and haematocrit levels, the hepatosomatic index (HSI), liver and muscle glycogen, lipid peroxidation and the enzymatic activity of lactate dehydrogenase (LDH), catalase (CAT) and glutathione reductase (GR), were recorded. Glucose levels increased (53.9%) after anaesthesia and/or stress. The stress situation increased plasma cortisol (146.6%), lactate (294.6%) and lipid peroxidation in white muscle (45%) and decreased glycogen in white muscle (40.1%). The haematocrit increased after stress or anaesthesia (7.9%) while the liver glycogen and HSI did not change. Anaesthesia or stress did not affect the LDH but reduced the activity of CAT (46.1%) and GR (30.3%). We concluded that the anaesthetic clove oil in the concentration 50 mg/L modulates the physiological responses to air exposure stress improving the welfare; air exposure and clove oil affect the antioxidant defences of lambari; the activity of CAT and GR and the concentration of MDA can be used as biomarkers of stress in A. altiparanae.

show abstract