水质. 利用汤氏纺锤水蚤的镖水蚤桡足动物幼年阶段试验

[中文适用范围]： 本国际标准规定了在半静态条件下测定化学物质、废水或水样对冷水海洋和咸水桡足类物种的毒性作用的生命早期阶段测试程序。 生物学终点包括生命早期阶段的生存和发育。 暴露从卵开始，一直持续到幼鱼阶段的出现。 桡足类广泛存在于海洋、咸水和淡水生态系统中。 它们是许多鱼类和大型无脊椎动物幼虫的重要猎物，并且越来越多地用作水产养殖中的活食物来源。 它们以浮游植物为食，因此是初级生产者和较高营养级之间生态上重要的能量转移纽带。 [外文原描述]： ISO 16778:2015 specifies an early-life stage test procedure for determination of the toxic effects of a chemical substance, effluent, or water sample on a cold-water marine and brackish water copepod species under semi-static conditions. The biological endpoints include survival and development of the early-life stages. The exposure starts with eggs and is continued until emergence of juvenile stages. Copepods occur widely in marine, brackish, and fresh water ecosystems. They represent important prey items for the larvae of many fish and larger invertebrates and are increasingly used as a live food source in aquaculture. They feed on phytoplankton and, thus, are an ecologically important energy-transfer link between primary producers and higher trophic levels.