Mayer J
Science. 1977 Oct 21;198(4314):261-4. doi: 10.1126/science.561995.
Energy used by U.S. ships in harvesting seafoods can vary by a factor of more than 100 when the seafoods are compared on the basis of their content of edible protein or line weight. This energy difference bears no relationship to the nutritive value in the food. When protein yield is compared, the energy to harvest some seafoods is in the same range as that needed to grow field crops. There is a large increase in energy consumption after processing, partly because of the small percent of the live weight used for human food.
当根据可食用蛋白质含量或去内脏后的重量对海产品进行比较时，美国船只捕捞海产品所消耗的能量可能相差100倍以上。这种能量差异与食物的营养价值无关。当比较蛋白质产量时，捕捞某些海产品所需的能量与种植大田作物所需的能量处于同一范围。加工后能源消耗大幅增加，部分原因是用于人类食物的活体重比例较小。
