对虾是我国的名产,经济价值极高。成虾体长27公分左右,是一种远距离洄游的水生生物,洄游区域大体上北自渤海湾南到朝鲜的济洲岛一带,性情活泼,善于游泳,喜食幼小的底栖生物和贝类幼苗。每年5月间群集渤海湾和黄海北部沿岸河川入海口,在软泥底质的浅海产卵繁殖,产卵后大部分死亡,寿命大约在一年左右,所产的卵约经三周就可孵化,幼苗成长迅速,由于 Shrimp is a famous product of our country with extremely high economic value. Adult shrimp is about 27 centimeters long and is a long-range migratory aquatic organism. The migratory area is generally north from the South of the Bohai Bay to the island of Jeju Island in North Korea. It is a lively and beatific swimmer, eating young benthos and shellfish Seedlings. May each cluster in the Gulf of Bohai Bay and the northern Yellow Sea estuary into the sea, in the shallow sea ooze bottom of the mud reproductive reproduction, most of the death after spawning, life expectancy of about one year, the eggs produced by about three weeks Hatching, seedlings grow rapidly due to