1. The growth experiment about Anguilla anguilla elver at different salinities of 0,5, 10 and 15� �.
本实验主要研究欧鳗黑仔苗在盐度分别为0、5 、 10和15的水体中的生长差异.
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These have either fled north to stay cool or been fished to the last elver before being turned into salmon feed. 这些鱼类不是逃往北方寒冷的水域,就是在长成为鲑鱼食物之前被捕捞到只剩下幼鳗。