海湾扇贝大面积、高密度人工育苗试验

LARGE SCALE EXPERIMENTS ON HIGH DENSITY SEEDLING REARING OF BAY SCALLOPS

本文报道了从1988年3月—1989年6月对海湾扇贝大面积、高密度人工育苗的试验。在亲贝升温促熟时采用6.5—15℃、15—18℃、18—21.5℃三个升温阶段,上述三个阶段升温幅度依次为每日0.5—1℃、1—1.5℃、1.5—2℃,每次升温达高限后,稳定培育2天,23—28天左右成熟产卵。幼体培育密度8—17个/毫升;前后期饵料分别以球等鞭金藻和塔胞藻为主;适量换水;为保持幼体生活环境的稳定,在幼虫各变态期不增加或减少换水量、充气量、投饵量;整个培育过程连续充气;土霉素和青霉素混合使用。1988年和1989年平均每立方米水体分别育出壳高500—800微米的稚贝205万粒和528万粒;壳高0.5厘米的商品苗35万粒和79万粒。

This paper reports the large scale experiments on high density seedling rearing of bay scallops from March 1988 to June 1989. The details of the procedure and the measures taken are described. 2.05 million larvae of 500-800μm shell height or 0.35 million commercial young scallops of 0.5 cm shell height were grown per a cubic meter of water in 1988, and 5.28 and 0.79 in 1989 respectively.