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Oxidative stress ecology in brook trout (Salvelinus fontinalis) from a high-mountain lake (Cottian Alps).
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-01-25 , DOI: 10.1016/j.scitotenv.2020.136946 Paolo Pastorino 1 , Antonia Concetta Elia 2 , Barbara Caldaroni 2 , Vasco Menconi 3 , Maria Cesarina Abete 3 , Paola Brizio 3 , Marco Bertoli 4 , Annalisa Zaccaroni 5 , Magara Gabriele 2 , Ambrosius Josef Martin Dörr 2 , Elisabetta Pizzul 4 , Marino Prearo 3
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-01-25 , DOI: 10.1016/j.scitotenv.2020.136946 Paolo Pastorino 1 , Antonia Concetta Elia 2 , Barbara Caldaroni 2 , Vasco Menconi 3 , Maria Cesarina Abete 3 , Paola Brizio 3 , Marco Bertoli 4 , Annalisa Zaccaroni 5 , Magara Gabriele 2 , Ambrosius Josef Martin Dörr 2 , Elisabetta Pizzul 4 , Marino Prearo 3
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High-mountain lakes are pristine ecosystems characterized by extreme environmental conditions. The atmospheric transport of pollutants from lowlands may add further stress to organisms inhabiting these environments. We investigated the environmental stress pressure on brook trout (Salvelinus fontinalis) from a high-mountain lake in the Cottian Alps (Piedmont, northwest Italy). To do this, males and females of brook trout were sampled from Balma Lake in summer (August) and autumn (October) 2017 in order to assess the influence of trace elements accumulation and environmental parameters (physicochemical parameters and nutrient characteristics of water) on oxidative stress biomarkers. Bioaccumulation of Al, As, Cd, Cr, Cu, Fe, Hg, Pb, Ni, Se, and Zn and metallothionein levels were measured in muscle tissue of males and females. Liver, gills, kidney, and spleen tissue samples were analyzed for superoxide dismutase, catalase, total glutathione peroxidase, selenium-dependent glutathione peroxidase, glutathione reductase, and glutathione S-transferase activity. Analysis of environmental parameters showed changes in biomarker levels with seasonal variations. Water temperature was significantly higher in summer than autumn (Wilcoxon test; p = .0078), while pH was significantly higher in autumn than in summer (Wilcoxon test; p = .0078). Sex-related differences in oxidative stress biomarkers in tissues were unremarkable, whereas seasonal variability of oxidative stress biomarkers was observed, with major differences occurred for liver in summer and for gills, kidney, spleen and muscle in autumn. Positive correlations between environmental parameters and biomarkers were noted. Major fluctuations in water temperature, pH, Cu, Pb and Hg produced changes in biomarker levels; however, increased food intake during the ice-free season was probably the main factor that influenced changes in oxidative stress biomarker levels in brook trout in this extreme ecosystem.
中文翻译：
来自高山湖泊（科特迪安阿尔卑斯山）的溪鳟（Salvelinus fontinalis）的氧化应激生态学。
高山湖泊是原始的生态系统，其特征是极端的环境条件。来自低地的污染物在大气中的传播可能会进一步加剧居住在这些环境中的生物的压力。我们调查了来自科特迪阿尔卑斯山（意大利西北部皮埃蒙特）的高山湖泊的溪鳟（Salvelinus fontinalis）的环境压力。为此，在2017年夏季（八月）和秋季（十月）从巴尔马湖抽取了雄性和雌性小溪鳟鱼，以评估微量元素的积累和环境参数（水的理化参数和营养特性）对氧化的影响强调生物标志物。测定男性和女性肌肉组织中铝，砷，镉，铬，铜，铁，汞，铅，镍，硒和锌的生物蓄积和金属硫蛋白水平。肝，腮，肾，分析脾组织样品中的超氧化物歧化酶，过氧化氢酶，总谷胱甘肽过氧化物酶，硒依赖性谷胱甘肽过氧化物酶，谷胱甘肽还原酶和谷胱甘肽S-转移酶活性。环境参数分析表明，生物标志物水平随季节变化而变化。夏季的水温明显高于秋季（Wilcoxon试验； p = .0078），而秋季的pH值明显高于夏季（Wilcoxon试验； p = .0078）。组织中氧化应激生物标记物的性别相关差异不显着，而氧化应激生物标记物的季节变化却被观察到，主要差异发生在夏季的肝脏和秋季的腮，肾脏，脾脏和肌肉。注意到环境参数和生物标记之间的正相关。水温，pH，Cu，Pb和Hg的主要波动导致生物标志物水平的变化；然而，在这种极端的生态系统中，无冰季节的食物摄入增加可能是影响溪鳟氧化应激生物标志物水平变化的主要因素。
更新日期：2020-01-26
中文翻译：
来自高山湖泊（科特迪安阿尔卑斯山）的溪鳟（Salvelinus fontinalis）的氧化应激生态学。
高山湖泊是原始的生态系统，其特征是极端的环境条件。来自低地的污染物在大气中的传播可能会进一步加剧居住在这些环境中的生物的压力。我们调查了来自科特迪阿尔卑斯山（意大利西北部皮埃蒙特）的高山湖泊的溪鳟（Salvelinus fontinalis）的环境压力。为此，在2017年夏季（八月）和秋季（十月）从巴尔马湖抽取了雄性和雌性小溪鳟鱼，以评估微量元素的积累和环境参数（水的理化参数和营养特性）对氧化的影响强调生物标志物。测定男性和女性肌肉组织中铝，砷，镉，铬，铜，铁，汞，铅，镍，硒和锌的生物蓄积和金属硫蛋白水平。肝，腮，肾，分析脾组织样品中的超氧化物歧化酶，过氧化氢酶，总谷胱甘肽过氧化物酶，硒依赖性谷胱甘肽过氧化物酶，谷胱甘肽还原酶和谷胱甘肽S-转移酶活性。环境参数分析表明，生物标志物水平随季节变化而变化。夏季的水温明显高于秋季（Wilcoxon试验； p = .0078），而秋季的pH值明显高于夏季（Wilcoxon试验； p = .0078）。组织中氧化应激生物标记物的性别相关差异不显着，而氧化应激生物标记物的季节变化却被观察到，主要差异发生在夏季的肝脏和秋季的腮，肾脏，脾脏和肌肉。注意到环境参数和生物标记之间的正相关。水温，pH，Cu，Pb和Hg的主要波动导致生物标志物水平的变化；然而，在这种极端的生态系统中，无冰季节的食物摄入增加可能是影响溪鳟氧化应激生物标志物水平变化的主要因素。
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