沙蚕(Nereis)俗称“砂子蚕”或“沙蛆”,是一种海洋无脊椎动物;钓钩的好鱼饵。沙蚕不仅在延绳钓渔业生产上使用,钓鱼爱好者的用量也很大。近年来随着旅游业的发达,沿海国家,尤其是日本国大力开发钓鱼旅游事业,因此作为钓钩鱼饵的沙蚕,用量在逐年增加,日本每年都由国外进口沙蚕。由于天然资源有限,远不能满足当前的需要,多年来 Nereis (Nereis) commonly known as “sand silkworm” or “sand maggots” is a kind of marine invertebrates; fishing lure good bait. Nereis is not only used in the production of longline fisheries, the amount of fishing enthusiasts is also great. In recent years, with the development of tourism, coastal countries, especially Japan, have made great efforts to develop fishing tourism. Therefore, the amount of sandworm used as bait bait has been increasing year by year. Japan annually imports sandworms from abroad. Due to the limited natural resources, far can not meet the current needs for many years