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近江牡蛎人工育苗试验报告
梁广耀1, 陈生泰2, 许国领3
1.广西海洋水产研究所;2.广西北海市海水养殖场;3.湛江水产学院
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REPORT ON ARTIFICIAL INCUBATION OF OSTREA R1VULARIS GOULD
Abstract:
The Ostrea Rivularis Gould is one of the most economical shellfishes along the coast of South China and occupies first place in shellfish cultivation. Its artificial incubation experi- ment was carried out in April-July, 1976 with an aim to supply young spats to various shellfish cultivation stations. Results obtained are as follows: ( 1 ) The Ostrea enters into metamorphosis period in 17-18 days and grows into young spat in 36-41 days after fertilization under the optimum condition of 25-29.5℃ water temperature, pH 7.9-8.2, 1.014-1.018 S. G. Any change of these factors will affect its growth. (2 ) Type D larva of 70-80 percent straight gluing line has a higher Survival rate. ( 3 ) Mixed diet of platgmonas sp, Dicrateria zhanjiangensis Hu, sp. nov. and Chaeto-ceros muelleri has a better feed efficiency. (4) Sixty percent of the 37181 young spats of Ostrea adhering to a stone pillaret survived.
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