Seedling raising method for improving disease resistance of crassostrea gigas larvae

The invention belongs to the technical field of mariculture biology, and particularly relates to a breeding method for improving disease resistance of crassostrea gigas larvae. Specifically, D-shaped larvae or shell top larvae of crassostrea gigas are subjected to secondary soaking treatment with seawater containing formaldehyde inactivated vibrio splendidus with the concentration of 107 CFU/L respectively, and the larvae in the two stages after soaking treatment are bred respectively, so that the disease resistance of the larvae of the crassostrea gigas is improved. Compared with an untreated control group of oyster larvae, the method has the advantages that the D-shaped larvae and the shell top larvae are treated by soaking the vibrio splendidus twice, and the growth speed, the vibrio splendidus infection resistance and the attachment metamorphosis rate of the cultured larvae are remarkably improved. 本发明属于海水养殖生物技术领域，具体涉及一种提高长牡蛎幼虫抗病能力的育苗方法。具体，将长牡蛎D形幼虫或壳顶幼虫，分别用含有浓度为107CFU/L的甲醛灭活灿烂弧菌的海水进行二次浸泡处理，并将浸泡处理后两个时期的幼虫各