为探讨底物中钙含量对牡蛎幼虫附着的诱导效应,本研究设计2因子随机区组实验,检验底物碳酸钙含量(4个处理水平:5%、20%、40%和60%)和海水中牡蛎幼虫丰度(低处理组:1 ind·m L~(-1),高处理组:7~8 ind·m L~(-1))对实验底物上太平洋牡蛎(Crassostrea gigas)稚贝附着效果(密度和壳高)的影响。结果表明:钙含量和海水中牡蛎幼虫丰度均显著影响实验底物上附着牡蛎稚贝的密度(P<0.05),钙含量对附着稚贝壳高的影响不显著(P>0.05),幼虫丰度显著影响附着稚贝的壳高(P<0.05);在相同牡蛎浮游幼虫丰度下,20%碳酸钙处理组对牡蛎幼虫附着的诱导能力最大,显著高于60%处理组(P<0.05),5%和40%处理组的诱导能力介于中间;在碳酸钙含量相同情况下,高牡蛎幼虫丰度处理组中实验底物上牡蛎稚贝附着量显著高于低幼虫丰度处理组(P<0.05),而平均壳高却表现为高幼虫丰度处理组<低幼虫丰度处理组(P<0.05)。 In order to explore the induction effect of substrate calcium on the adhesion of oyster larvae, a two-factor randomized block design was designed to test the calcium carbonate content (4%, 20%, 40% and 60%) and The abundance of oyster larvae in the seawater (1 ind · m L -1 in the low-treatment group and 7 ~ 8 ind · m L -1 in the high-treatment group) did not affect the growth of the oyster (Crassostrea gigas) Effect of juvenile attachment (density and shell height). The results showed that the calcium content and the abundance of oyster larvae in seawater significantly affected the density of juvenile oysters attached to the experimental substrate (P <0.05), and the calcium content had no significant effect on the height of the attached juvenile shellfish (P> 0.05) (P <0.05). Under the same oyster larval abundance, the ability of 20% calcium carbonate treatment to induce oyster larvae was significantly higher than that of 60% treatment group (P <0.05) ), 5% and 40% of the treatment group was intermediate. Under the same calcium carbonate content, the juvenile oyster on the experimental substrate in the high oyster larvae abundance treatment group was significantly higher than the low larval abundance treatment group (P <0.05), while the average shell height showed the abundance of high larvae