利用地下海水进行海湾扇贝越冬的效果研究

把5cm以上海湾扇贝亲贝按43-50个／m^3密度吊养于水泥沉淀池，利用附近井水调温：使池水温度达4℃以上。越冬两个半月，成活率84％以上，而自然海区越冬贝成活率仅70％．升温促熟后．亲贝产卵孵化率60％以上，而自然海区越冬贝仅为15．1％。地下海水越冬贝的单位水体出苗量为505万粒／m^3和544万粒／m^3，而自然海区越冬贝出苗量仅有209万粒／m^3．证明利用地下海水调温，在沉淀池进行海湾扇贝亲贝越冬，效果明显，完全可行．

Test of Using Underground Seawater for the Wintering of Bay Scallop Argopecten irradians

At the density of 43 ~ 50 md. per cubic metre, the parent bay scallops whose body length were above 5 cm were cultured in the cement precipating pond for two and a half months.The underground seawater was used to keep the water temperature above 4'C' The survival rate of the parent scallop during the wintering was above 84%, while that of those wintered in the natural sea area was only 70%. The incubation rate was obviously different,the former was above 60% and the later was 15. 1%. The larval output of the former was 5. 05 and 5. 44 million per cubic metre respectively, while that of the later was only 2.09million per cubic metre.