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海湾扇贝养殖近年发展迅速,人工苗种需求量大,亲贝培育的好坏直接关系到整个育苗生产,因此,对亲贝培育要求较严。 浙江沿海亲贝一般在三月中下旬入池。挑选个体大、壳高3—5厘米以上的且性腺肥满的健康扇贝为亲贝,刷洗干净,除去壳表面附着物,以每立方米50—120个亲贝的密度入池进行亲贝培育。 培育要点如下: 1.水温:亲贝入池后,先在与自然海水水温持平的情况下恒温培养2—3天,使其适应环境。待正常摄食后,再缓慢升温。日升温不可超过1℃。升至16℃—17℃时,维持3—4天,让其积累营养物质。产卵时,升至22℃—23℃。 2.投饵:饵料用小硅藻和三角褐指藻的混合
Gulf scallop aquaculture has developed rapidly in recent years, the demand for artificial seedlings is large, the quality of pro-shell cultivation is directly related to the whole nursery production, therefore, the requirements of pro-shell cultivation are more stringent. Zhejiang coastal pro-shell generally in late March into the pool. Selection of individual large, shell height 3-5 cm and gonadal fat healthy scallops as pro-shell, brush clean, remove the shell surface attachments to the density of 50-120 progenitors per cubic meter into the pool pro-shell cultivation . Cultivation points are as follows: 1. Water temperature: After the pro-Bay into the pool, first with the natural seawater temperature in the case of constant incubation for 2-3 days to adapt to the environment. After normal feeding, then slowly warming. Day warming can not exceed 1 ℃. Raise to 16 ℃ -17 ℃, maintain 3-4 days, let it accumulate nutrients. Spawning, rose to 22 ℃ -23 ℃. 2 feeding: bait with small diatoms and Phaeodactychia mixed