真鲷（Pagrosomus major）苗种生产技术的开发研究↑（*）

１９９１－１９９３年在中国青岛市对真鲷苗种生产技术进行了连续三年的开发研究，通过改善亲鱼培育及采卵技术、提高轮虫连续培养及稳定供应技术、提高仔鱼开鳔率、加强饵料的营养强化、设置环流及水面集污器等技术措施、改进和完善了真鲷苗种生产工艺。利用 １７５ｍ３培育水体，三年中共育出真鲷苗种 ２９１． ６万尾，各年度的苗种生产量分别为 ５１．８万尾、１１６．４万尾、１２３．４万尾；培苗成活率分别为２５．６％、３２．８％、６２．５％；平均单位水体出苗量分别为２９６０尾／ｍ３、６６５１尾／ｍ３、９８７２尾／ｍ３。在国内首次实现苗种生产三年连续成功，并连续突破百万尾大关。同时试验证明利用对虾育苗池进行真纲苗种生产是可行的。

STUDIES ON SEED PRODUCTION TCEHNOLOGY OF RED SEA BREAM PAGROSOMUS MAJOR

The studies on seed production of red sea bream were carried out from 1991 to 1993 in Maitao Experimental Station of Yellow Sea Fisheries Research institute, Qingdao, China. By innovating methods of spawner culture and egg collection, adopting continuos culture of ratifier, raising swim bladder inflation rate, enhancing the nutrition of animal diets, setting the water circulating plate in the tank, total 2. 916 million seeds ranged from 21. 7 to 59. 6 mm in total length were produced in the three years in the concrete tanks with total capacity of 174 m3. The mean seed productions were 2960, 6651 and 9872 m-3 in 1991, 1992 and 1993 respectively. Meanwhile, it demonstrated that prawn seedling breeding tanks not only was practicable facility of breeding red sea bream but could obtain high production and survival also.