魁蚶生产性间断升温育苗技术的研究

Studies on Production Techniques of Intermitent Raising of Temperature in Rearing Arca inflata

本文介绍魁蚶间断升温育苗方法，从改善亲贝蓄养条件入手，促使亲贝快速成熟自然产卵，并进行洗卵。在幼虫培育时，加强营养，加大换水，及时筛选不同大小的幼虫分池培养。严格海上中间培育管理，使每立方水体出苗量达31万个（大小0．5cm），取得了明显的经济效益。

The technique of rearing Scapharca broughtonil introduced in this paper involves intermittent raising of breeding temperature, ie, part-time feeding by raising temperature and part-titime breeding at normal temperature, the main technical measures adopted are: improving the conditions of the broodstock ao as to quicken the ripening of parent clams and promote their natural spawning and, in addition, condueting egg washing. The following measures are thought to be effective in the larval rearing: strenthaning nutrition, increasing water exchange and screening the larvae of different sizes to rear in separate ponds in time. During the intermediate culture at sea, strict management should be guaranteed. Over 3 ×105 seeds(0. 5cm in diameter) were harvested per cubic meter of water and more economic profits were gained.