硬壳蛤 (Mercenariamercenaria)亲贝于 2 0 0 0年由美国引入大连 ,采用阴干和温度变化刺激对其进行人工催产 ,亲贝诱导排放比例可达 80 %。水温 18～ 2 6℃ ,2 0 .5～ 2 4 0h胚胎发育到面盘幼虫 ,孵化率达 94 %。浮游幼虫前期饵料以湛江等鞭金藻 (Iscochrysiszhanjiangensis)为主 ,逐渐添加新月菱形藻 (Nizschiaclosterium) ,后期以新月菱形藻为主。硬壳蛤幼虫温度、盐度的适宜范围分别为 19～ 2 7℃、2 5 .0～ 3 3 .6。饵料以混合投喂效果最佳 ,湛江等鞭金藻次之。浮游幼虫培养 12～ 17d ,幼虫壳长达 2 0 0～ 2 10 μm ,采用在培养池底铺砂做附着基 ,幼虫变态率达 2 1% ,稚贝培养 3 0d后可达 1mm左右 The shell of Mercenaria mercenaria was introduced into Dalian by the United States in 2000 and artificially stimulated by dry and temperature changes. The proportion of progeny-induced emissions can reach 80%. Water temperature 18 ~ 26 ℃, 20.5 ~ 240h embryos develop larvae face dish, hatching rate of 94%. The predation plankton larvae were mainly Iscochrysiszhanjiangensis, gradually adding the Nizschiaclosterium, and later, the crescent Myzus. The suitable range of temperature and salinity of hard shelled clam larvae were 19 ~ 27 ℃ and 25.0 ~ 33.6 respectively. Feed the best mixed feeding effect, followed by Zhanjiang whip Anchovy. The planktonic larvae were cultured for 12-17 days, and the larval shell length was 200-210 μm. The larvae metamorphosis rate reached 21% by using paving sand at the bottom of the culture pool, and the larvae reached about 1 mm after 30 days of culture