کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4529912 | 1625980 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tissue-specific metabolic changes in response to an acute handling disturbance in juvenile rainbow trout exposed to municipal wastewater effluent
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Tissue-specific metabolic changes in response to an acute handling disturbance in juvenile rainbow trout exposed to municipal wastewater effluent Tissue-specific metabolic changes in response to an acute handling disturbance in juvenile rainbow trout exposed to municipal wastewater effluent](/preview/png/4529912.png)
چکیده انگلیسی
The objective of this study was to evaluate the effects of municipal wastewater effluent (MWWE) exposure on aspects of both organismal and cellular stress response in rainbow trout (Oncorhynchus mykiss). Juvenile rainbow trout were exposed for 14Â d (2-d static renewal) to tertiary-treated MWWE at concentrations of 0%, 20% and 90%. Following the MWWE exposure, fish were subjected to an acute handling stress and sampled at 1, 4 and 24Â h post-stressor, to evaluate the fish performance to additional stressors. Organismal stress response evaluation included measuring plasma cortisol, glucose and lactate concentrations, and tissue metabolic capacity, including gluconeogenic (liver) and glycolytic enzyme activities in the liver, brain, heart and gill. No significant differences between treatments were seen in plasma cortisol, glucose or lactate concentrations after 14Â d exposure to MWWE. However, MWWE exposure significantly affected plasma cortisol and glucose response to the acute secondary stressor. Acute handling disturbance enhanced liver gluconeogenic capacity in the control group, but this response was altered in the MWWE exposed groups. MWWE exposure did not affect the acute stressor-mediated enhancement of brain or gill glycolytic capacity, but significantly reduced the glycolytic capacity of liver and heart in response to a secondary stressor compared to the control group. Altogether, chronic exposure to MWWE impacts the metabolic performances to a secondary stressor challenge and this includes disruptions in tissue-specific gluconeogenic and glycolytic capacities in rainbow trout.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquatic Toxicology - Volume 108, February 2012, Pages 53-59
Journal: Aquatic Toxicology - Volume 108, February 2012, Pages 53-59
نویسندگان
Jennifer S. Ings, Mathilakath M. Vijayan, Mark R. Servos,