Accumulation of Lipophilic Microcontaminants and Biochemical Responsesin Eels from the Camargue Biosphere Reserve
Accumulation of Lipophilic Microcontaminants and Biochemical Responsesin Eels from the Camargue Biosphere Reserve
复制标题
卡马格生物圈保护区鳗鱼亲脂性微污染物的积累和生化反应
作者：
H. Roche;A. Buet;F. Ramade
我们评估了持久性有机微污染物对卡马格国家级自然保护区（NNR）咸水和淡水群落水生营养网的影响。我们发现，有机氯化合物影响鱼类群落，特别是那些共同的鳗鱼（安圭拉）。本研究的目的是（1）测定可能来自大气的多环芳烃（PAHs）和灌溉沃茨中的两种有机氯（OC）--林丹和狄氏剂的含量，在肝脏和肌肉中（2）定义原位生物标志物和（3）以确定来自“未受污染”地区的鱼类受到污染的模式。无论采样季节如何，所有物种都受到低水平但波动量的多环芳烃和有机碳污染。总是检测到林丹和狄氏剂，萘是最丰富的烃。OC和PAH含量很少与贮藏组织中的脂质含量相关，它们在中性和极性组分中的浓度变化很大。我们发现了一些持久性有机污染物（POP）的组织浓度和酶的膜标记物的活动之间的相关性。例如，最易挥发的多环芳烃的浓度与肌肉乙酰胆碱酯酶（AChE）的活性之间存在关系，苯并多环芳烃的浓度与鳃和/或肌肉中ATP酶的活性之间存在关系。
We assessed the impacts of persistent organic micropollutants on aquatic trophic webs in brackish and freshwater communities in the Camargue National Nature Reserve (NNR). We found that organochlorine compounds affect fish communities, particularly those of the common eel (Anguilla anguilla). The aims of this study were (1) to determine the amount of lipophilic xenobiotics such as polycyclic aromatic hydrocarbons (PAHs), which are probably of atmospheric origin, and two organochlorines (OC), lindane and dieldrin, which are from irrigation waters, in liver and muscle (2) to define in situ biomarkers and (3) to identify the mode by which fish from ‘unpolluted’ areas become contaminated.All of the species were contaminated with low, but fluctuating quantities of PAHs and OCs, regardless of the sampling season. Lindane and dieldrin were always detected and naphtalene was the most abundant hydrocarbon. The OC and PAH content was rarely correlated with the lipid content in storage tissues and their concentrations in the lipidic fractions (neutral and polar) varied greatly. We found a number of correlations between persistent organic pollutant (POP) tissue concentrations and the activities of enzymatic membrane markers. For example, there is a relationship between the concentrations of the most volatile PAHs and the activity of muscle acetylcholinesterase (AChE) and between the concentration of benzo-PAH and the activities of ATPases in the gills and/or muscle.