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首页> 外文会议>International Conference on Fate Effects of Pulp Paper Mill Effluent >Are Developmental Abnormalities a Useful Endpoint for the Wild Fish Survey Element of the Canadian EEM Program for Pulp and Paper Mills?
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Are Developmental Abnormalities a Useful Endpoint for the Wild Fish Survey Element of the Canadian EEM Program for Pulp and Paper Mills?

机译：发育异常是加拿大纸浆和造纸厂加拿大EEM计划的野生鱼类调查元素的有用终点吗？

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摘要

Since 1993, all Canadian pulp and paper mills that discharge liquid effluents into waters containing fish have been required to survey fish from the receiving environment and compare their growth, survival and reproduction to that of fish living in one or more reference sites. Many fish surveys, particularly in marine environments, failed to catch sufficient adult fish or demonstrate exposure to effluent. Recommendations to address these problems included surveying juvenile fish in these habitats. The objective of the present study was to test whether gross morphological abnormalities in juvenile estuarine fish are a sensitive indicator of environmental quality. Prevalence of abnormalities in young-of-the-year mummichog (Fundulus heteroclitus) sampled from two Canadian Atlantic estuaries was low (< 1%) and unrelated to discharges of pulp mills and sewage treatment plants. Laboratory exposures to 1 to 100% bleached kraft mill effluent from two mills throughout the embryo, larval and juvenile stages did not consistently elevate prevalence of morphological abnormalities or mortality. These results suggest that pulp mill effluents are not teratogenic for mummichog exposed chronically to even high concentrations and that developmental abnormalities may not be a useful measure for surveys of juvenile fish.
机译：自1993年以来，所有加拿大纸浆和造纸厂中的喷射液废水到含有鱼水域被要求调查鱼的接收环境和他们的成长，生存和繁殖比较鱼生活在一个或多个参考部位。许多鱼类调查，特别是在海洋环境中，未能捕获足够的成人鱼或表现出暴露在流出物中。解决这些问题的建议包括调查这些栖息地的少年鱼。本研究的目的是测试幼年河鱼鱼中的总体形态异常是环境质量的敏感指标。从两只加拿大大西洋河口中取样的年幼的Mummichog（基质HandoClitus）的异常患病率低（<1％），与纸浆厂和污水处理厂的放电无关。实验室暴露于1至100％漂白的牛皮纸磨坊在整个胚胎，幼虫和少年阶段的两个磨坊中的流出物并未始终升高形态异常或死亡率。这些结果表明，纸浆磨水流出物不致畸，用于长期暴露于甚至高浓度，并且发育异常可能不是少年鱼调查的有用措施。

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