【摘要】 本试验对河蟹氵蚤Ⅱ～Ⅴ幼体及１～２日龄大眼幼体在盐度变化情况下的忍受力进行了观察，试验结果显示：氵蚤Ⅱ～Ⅲ幼体发育期盐度日降幅不宜大于１‰；氵蚤Ⅳ～Ⅴ幼体发育期盐度日降幅不宜大于２‰～３‰；至１～２日龄大眼幼体阶段盐度日降幅于５‰以下对存活率已无多大影响。更多还原

【Abstract】 Observations were made on the tolerance of mitten crab larvae (Zoea Ⅱ～Ⅴ and Megalopa 1～2 days old) to salinity variations in the experiment. The results showed that the daily decreasing range of salinity should not be higher than 1‰ during the Z 2 to Z 3 developmental period, and not higher than 2‰～3‰ during Z 4 to Z 5 developmental period. There was almost no serions influence on survival when the daily decreasing range of salinity was below 5‰ during the megalopa 1～2 days old developmental period.更多还原