Swedish National Environment Contaminant Monitoring of Flounder (1989-)

The Contaminant Programme in marine biota constitutes an integrated part of the national monitoring activities in the marine environment as well as the international programmes within ICES, OSPARCOM and HELCOM. The programme is financed by the Swedish Environmental Protection Agency. The flounder is a bottom living species feeding on crustaceans, mussels, worms, echinoderms and small fishes. The males in the Skagerrak become sexually mature between 3-4 years and the females one year later. The spawning in the Skagerrak takes place during the period January - April. The flounder tends to migrate to deeper water in late autumn. Flounder is among the 'second choice species' recommended within the JAMP (Joint Assessment and Monitoring Programme). Flounder is collected from the Skagerrak (Vaderoarna) in the autumn. Liver tissue samples are analysed for lead, cadmium, copper and zinc and muscle tissue samples are analysed for organochlorines and mercury. The flounder specimens are age determined by otoliths. Specimens between 4-6 years are analysed.

海洋生物群落中的污染物项目构成了国家海洋环境监测活动的有机组成部分，同时也是国际组织 ICES、OSPARCOM 和 HELCOM 内部项目的组成部分。该项目由瑞典环境保护局资助。鲽鱼是一种栖息于海底，以甲壳类、贻贝、环节动物、棘皮动物和小鱼为食的底栖物种。在斯卡格拉克海域，雄性鲽鱼在3至4岁时达到性成熟，而雌性则晚一年。在斯卡格拉克海域，产卵期在1月至4月之间。鲽鱼倾向于在深秋季节迁移至更深的水域。在JAMP（联合评估与监测计划）中，鲽鱼被推荐为‘次选物种’之一。鲽鱼在秋季从斯卡格拉克（Vaderoarna）捕捞。肝脏组织样本分析铅、镉、铜和锌含量，而肌肉组织样本则检测有机氯和汞。通过耳石确定鲽鱼标本的年龄，4至6岁的样本将进行分析。