无脊椎动物的捕获量约占世界水生生物总捕获量的8.4%,其中以贝类产量为主,约380万吨,相当于无脊椎动物总捕获量的65%.甲壳类比贝类少一半,约195万吨,即占33.3%,然而甲壳类的经济价值却很高.目前,在海洋渔业中具有重要意义的有4种甲壳类:对虾、龙虾、螯龙虾和蟹.此外,还有捕获量不多的铠甲虾科歪尾派的虾类.所有这些种类均属于十足目.燐虾及其他虾类的产量有可能大量增加.下面分别介绍4种主要经济甲壳类的资源量及其利用状况. Invertebrate catches account for about 8.4% of the total catch of aquatic organisms in the world, mainly shellfish, about 3.8 million tonnes, equivalent to 65% of the total invertebrate catches. Crustaceans are half as likely as shellfish, Some 1.95 million tonnes, or 33.3%, are economically valued for crustaceans, and currently there are 4 crustaceans that are significant in marine fisheries: shrimp, lobster, crawfish and crabs. In addition, there are catch A small amount of armor shrimp Division crooked sent shrimp, all of these species belong to a decapitated shrimp and other shrimp production is likely to increase significantly below the following four kinds of economic crustaceans, the amount of resources and their utilization situation.