一、美国海洋渔业的产量 1985年美国50个州渔民在本国港口卸货的总渔获量为280万吨(63亿磅),产值23亿美元。总渔获量比1984年减少8,200吨(18,010万磅),产值比1984年减少2,420万美元。蛤、蟹、虾、鲱、狭鳕和大麻哈鱼的产量在增加;鲽、油鲱和金枪鱼的产量在下降。各主要鱼种的产量比较见表1。表1、1984—1985年美国各州商业捕捞在国内的上岸量(主要鱼种) 1. Production of Marine Fisheries in the United States In 1985, fisheries from 50 U.S. states totally discharged 2.8 million tons (6.3 billion pounds) of unloading cargo at their own ports with a production value of 2.3 billion U.S. dollars. The total catch decreased by 8,200 tonnes (180.1 million pounds) from 1984 and the value of output decreased by $ 24.2 million over 1984. Production of clams, crabs, shrimps, herrings, pollocks and salmon is on the rise; production of shrimp, shad and tuna is declining. The yield of each major species is shown in Table 1. Table 1 Land acquisitions (main species) of domestic commercial fishing in the United States from 1984 to 1985