按照生物间的相互关系，一般又可把食物链分成四类： 捕食性食物链（predatory food chain）：又称为放牧式食物链，是以植物 为基础。构成形式是植物→草食动物→肉食动物，后者可以捕食前者。
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... 草食食物链(Grazing Food Chain) 捕食食物链(Predatory Food Chain) 寄生食物链(Parasite Food Chain) ...
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Large, predatory fish - such as tilefish, swordfish and king mackerel - tend to have higher levels of methyl mercury than do smaller fish because they're higher in the aquatic food chain.
大型食肉鱼类-如方头鱼，旗鱼和鲭鱼的甲基汞水平往往高于比他们更小的鱼，因为其水生食物链中更高。
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In general if we can figure out how to eat fish that are not so predatory, lower on the food chain, that is going to help save the world.
FORBES: The Future of Our Seafood, A Discussion with Rick Moonen
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