Responses of Shortfin Eel (Anguilla Australis) Exposed In Situ to Pulp and Paper Effluent
Responses of Shortfin Eel (Anguilla Australis) Exposed In Situ to Pulp and Paper Effluent
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短鳍鳗（Anguilla Australis）原位暴露于纸浆和造纸废水中的反应
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
L. Tremblay
中科院分区：
文献类型：
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作者：
M. R. van den Heuvel;M. Landman;L. Tremblay
研究了短鳍鳗鲡（Anguilla australis）对两个纸浆和造纸米尔斯、城市污水和地热发电厂污水排放的反应。在新西兰北岛Tarawera河沿岸沿着的3个地点对鳗鱼进行笼养，以探索污染梯度下3周暴露的影响（参考→ D1 → D2）。大多数观察到的影响是在最下游的地点（D2），在所有排放区下面的笼子里看到的。鳗鱼的一般血液学不受影响，因为与参考部位相比，两个下游部位的测量值无显著差异。在D2，鳗鱼显着轻每单位长度（减少条件因素），虽然肝脏和脾脏的大小（LSI和SSI）不受影响。在D2鳗鱼中测得循环性类固醇浓度（睾酮和雌二醇）显著升高，并观察到参考位点下游两个位点的性类固醇水平增加。在D2鳗鱼中观察到显著的乙氧基试卤灵O-脱乙基酶（EROD）活性诱导，胆汁化学显示芘和retene当量的显著积累。然而，显着更高的总树脂酸浓度被发现在胆汁中的鳗鱼从中间网站（D1），两个纸浆和造纸厂之间的米尔斯。在D2鳗鱼胆汁中发现的较高的多环芳烃（PAH）当量表明，树脂酸中性物，特别是retene，是负责鳗鱼中观察到的一些影响在最下游的曝光网站。沉积物中纸浆和造纸厂提取物的水平，包括PAH retene，支持这一结论。
The responses of shortfin eel (Anguilla australis) to discharges from two pulp and paper mills, municipal wastewater, and a geothermal power plant wastewater were examined. Eels were caged at 3 sites along the Tarawera River, North Island, New Zealand, to explore effects of a 3-wk exposure down a contamination gradient (Ref → D1 → D2). Most of the observed effects were seen in eels caged at the furthest downstream site (D2), below all the discharge areas. General hematology in eels was unaffected, as measures did not differ markedly at the two downstream sites compared with the reference site. At D2, eels were significantly lighter per unit length (reduced condition factor), although liver and spleen size (LSI and SSI) were unaffected. Significantly elevated circulating sex steroid concentrations (testosterone and estradiol) were measured in D2 eels and increasing sex steroid levels at both sites downstream of the reference site were observed. Significant ethoxyresorufin O-deethylase (EROD) activity induction was seen in D2 eels and bile chemistry showed significant accumulation of pyrene and retene equivalents. However, significantly greater concentrations of total resin acids were found in the bile of eels from the intermediate site (D1), between the two pulp and paper mills. The higher polycyclic aromatic hydrocarbon (PAH) equivalents found in the bile of D2 eels suggest that resin acid neutrals, particularly retene, are responsible for some of the effects observed in eels at the furthest downstream exposure site. Levels of pulp and paper mill extractives in sediment, including the PAH retene, support this conclusion.