【摘要】 为促进皱肋文蛤养殖业健康持续发展,提供批量优质苗种,研究开展了皱肋文蛤规模化人工育苗试验,育苗全程投喂人工培育的单胞藻。结果表明:分六批次催产皱肋文蛤亲贝580 kg,共获受精卵40.336×10~8粒,孵出D形幼虫总量为28.437×10~8只,受精卵孵化率为70.5%;浮游幼虫培育7 d后开始变态附着,获初附稚贝15.157×10~8粒,幼虫变态附着率为53.3%;再经约33 d培育,共培育出平均壳长916.17μm的皱肋文蛤稚贝8.986×10~8粒,育苗成活率为31.6%,平均单位出苗量为249.6×10~4粒/m~2。更多还原

【Abstract】 In order to promote the healthy and sustainable development of culture industry and provide high quality spats of Meretix lyrata,artificial breeding technique in a large scale of M.lyrata was carried out.Unicellular algae were used as feeds during the breeding period.There were 6 batches of 580 kg parental M.lyrata which were artificially induced to spawn.The total number of fertilized eggs were 4.033 6 billion,and 2.843 7 billion D-shaped larvae were hatched,so the hatching rate was 70.5%.After 7 days breeding of planktonic larvae,the larvae began to attach with the process of metamorphosis,and 1.515 7 billion attachment larvae were obtained,so the attachment rate was 53.3%.After another 33 days growth,898.6 million spats with average shell length of 916.17 μm survived,the survival rate of artificial breeding was 31.6%,and the average output of spats per unit was 2.496 million seeds/m~2.更多还原