叙述盐度对岐脊加夫蛤Ｇａｆｒａｉｕｍｄｉｖａｒｉｃａｔｕｍ（Ｇｍｅｌｉｎ）幼虫及不同大小稚贝（壳长０．８～１．４ｍｍ）生长和存活的影响．水温３０±１℃时，加夫蛤幼虫阶段的适盐范围为１９．９３‰～３３．２２‰，最适盐度为２２．５９‰．其下限和上限分别为１５．９５‰和３８．５３‰，其存活率低于３０％．水温２５±１℃时，稚贝Ⅰ（壳长０．８～１ｍｍ）适盐度范围为１９．９３‰～３３．２２‰，最适盐度为２２．５９‰；较大稚贝Ⅱ（壳长１．３～１．４ｍｍ）适盐范围为１５．９５‰～３８．５３‰，最适盐度为２５．２４‰，其下限和上限分别为９．３０‰和４５．１７‰． The effects of salinities on the growth and survival of Gafraiumdivaricatum (Gmelin) larvae and juveniles (shell length 0.8-1.4 mm) were studied. When the water temperature was 30 ± 1 ℃, the range of suitable salt of Gaviidae larvae ranged from 19.93 ‰ to 33.22 ‰, and the optimum salinity was 22.59 ‰. The lower limit and the upper limit were 15.95 ‰ and 38.53 ‰ respectively, with a survival rate of less than 30%. The optimum salinity range of juvenile Ⅰ (shell length 0.8 ~ 1mm) was 19.93 ‰ ~ 33.22 ‰ and the optimum salinity was 22.59 ‰ when water temperature was 25 ± 1 ℃. Shell length 1.3 ~ 1.4mm) suitable salt range of 15.95 ‰ ~ 38.53 ‰, the optimum salinity of 25.24 ‰, the lower limit and the upper limit were 9.30 ‰ and 45.17 ‰.