泥蚶大面积工厂化育苗高产技术研究

Studies on Technique for High Yield of Industrial Bloody Clam Breeding in Large Area

选择浙江虾池促熟育肥的肥满度7．0％左右的亲蚶，高密度（10～120粒／ml）采卵，低密度（20～30粒／ml）孵化，以海泥作附着基，整池移入变态附着池，分批附着。3～5天倒池洗苗一次。以扁藻、金藻、角毛藻为主，辅投异胶藻、小球藻。1997年在1746m2育苗池中育出450～630μm×376～570μm蚶苗18．57亿粒，平均单位面积出苗量106．36万粒／m2，效益显著。专家鉴定认为，本研究居国内领先水平。

Chose the parent bloody clams (Anadara granosa),accelerating-matured and fattened in a prawn pond in Zhejiang Province. The eggs were collected in high density(100~ 120 particles per ml ) and hatched in low density (20~30 particles per ml ). All eggs in the hatching pond were removed into another pond for metamorphosis and setting to make them set on the searnud substrate in batches. Every 3~5 days reversed pond and washed the larvae one time. The larvae were mainly fed on Platoymonas sp., Isochrysis (3011, 3012 ), Chaetoceros sp., and supplementarily on Heterogloea sp.,Chlorella sp. In 1997 1. 857 billion larvae with the size of 450~ 630 μ× 376~ 570 μm were out of the seeding pond. The average amount of larvae per square metre was 106. 36 million partictes.