Toxicity of Ammonia and Its Effects on Oxidative Stress Mechanisms of Juvenile Crucian Carp (Carassius auratus)

被引：52

作者：

Yang, Wei ^{[1
]}

Xiang, Fuhui ^{[1
]}

Liang, Liguo ^{[1
]}

Yang, Zhou ^{[1
]}

机构：

[1] Nanjing Normal Univ, Sch Biol Sci, Jiangsu Prov Key Lab Biodivers & Biotechnol, Nanjing 210046, Jiangsu, Peoples R China

来源：

JOURNAL OF FRESHWATER ECOLOGY | 2010年 / 25卷 / 02期

关键词：

ANTIOXIDANT DEFENSES; FISH;

D O I：

10.1080/02705060.2010.9665080

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The rapid increase in concentration of ammonia in lake water during the degradation of algal blooms may cause acute toxicity to aquatic organisms. The purpose of this study was to assess the acute toxicity of ammonia and its effects on oxidative stress mechanisms of juvenile crucian carp (Carassius auratus), a model organism for investigating antioxidant responses to different kinds of stress. The lethal concentrations of ammonia to 50% of juvenile crucian carp decreased significantly with time and fit a hyperbolic decay model. Ammonia also induced antioxidant defenses of juvenile crucian carp. Catalase (CAT), superoxide dismutase (SOD), and glutathione (GSH) in the livers of the fish fluctuated with time and ammonia concentration and had similar trends. There was a statistically significant interaction between time and ammonia concentration on activities of CAT and SOD.

引用

页码：297 / 302

页数：6

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