Endocrine, metabolic and cellular stress responses of matrinxa (Brycon cephalus) exposed to phenol

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TypePresentation
ConferenceVIIth International Congress on the Biology of Fish, 19-22 July 2006, St. John's, Newfoundland and Labrador, Canada
Subjectendocrine stress response; metabolic stress response; cellular stress response; stress response; Brycon cephalus; matrinxa; phenol
AbstractIndustrial wastes may contain chemicals such as phenols, which can impact the physiology of fish. We studied the effects of phenol exposure on the metabolic, endocrine and cellular stress responses of matrinxã. Fish were exposed to phenol (0, 0.2 and 2.0 ppm) for 96 hours and subsequently subjected to a 30 second handling stress. Plasma cortisol and glucose, and gill and liver hsp70 levels were determined before exposure, 96 h after exposure and at 1, 6, 12 and 24 hours after stress (HAS). Exposure to these concentrations of phenol did not result in elevated levels of plasma cortisol or glucose at 96 h. Exposure followed by handling, significantly increased plasma glucose and cortisol in the 0 and 2.0 ppm groups. Cortisol levels in these groups declined to resting levels by 6 and 24 HAS, respectively. Glucose returned to resting levels at 12 HAS in both groups. The 0.2 ppm group did not have a glucose or cortisol response. Gill hsp70 levels did not change due to phenol exposure. In the 2.0 ppm group gill hsp70 levels declined after stress. At 96 h liver hsp70 levels were lower in all groups. Stress caused no additional changes in liver hsp70. Our results demonstrate that low levels of phenol can modify the stress response
LanguageEnglish
AffiliationNRC Institute for Marine Biosciences; National Research Council Canada
Peer reviewedNo
NRC number55866
1530
NPARC number3538314
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Record identifier7dc1c47e-70ef-48f6-8f48-0529509f2f2c
Record created2009-03-01
Record modified2016-05-09
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