北方近江牡蛎生产性人工育苗技术研究  

Studies on productive artificial breeding technology of northern Crassostrea ariakensis

作　　者：邹多 李海昆 高成乾 李春华 李琦 于瑞海[1] ZOU Duo;LI Haikun;GAO Chengqian;LI Chunhua;LI Qi;YU Ruihai(Key Laboratory of Mariculture of Ministry of Education,Ocean University of China,Qingdao 266003,China)

机构地区：[1]中国海洋大学海水养殖教育部重点实验室,山东青岛266003

出　　处：《海洋湖沼通报》2023年第3期63-68,共6页Transactions of Oceanology and Limnology

基　　金：国家重点研发计划项目,黄渤海滩涂生态高效三产融合模式示范(2020YFD0900705)。

摘　　要：本文以潍坊老河口自然保护区的近江牡蛎为实验材料,通过强化亲贝的促熟培育,使近江牡蛎亲贝快速成熟,阴干刺激诱导亲贝产卵、排精,同时进行了22~23℃,25~26℃和28~29℃三个温度范围的亲贝促熟培育实验。结果表明,温度22~23℃促熟效果最好,亲贝的存活率最高达85%;通过控制幼虫培育密度、投喂新鲜无污染单细胞藻以及其它科学管理等技术措施,促使幼虫快速生长至300μm。60%的幼虫出现眼点时,投放栉孔扇贝壳进行附着采苗,眼点幼虫的变态率可达16.0%。本次生产性人工育苗最终成功培育出壳高0.4 mm以上的近江牡蛎稚贝3.84多亿粒,单位水体出苗量达到24.0×10^(4)粒/m^(3),附苗960×10^(4)片,取得北方近江牡蛎生产性人工育苗生产的成功,为近江牡蛎资源修复打下坚实基础。By raising the temperature to promote gonad maturation,and shade-dry stimulating,oyster C.ariakensis from the estuary of Weifang was induced to reproduce.The promoting maturation cultivation of the brood stock was carried out at 22~23℃,25~26℃and 28~29℃,respectively.The results showed that the best ripening effect was achieved at 22~23℃,and the survival rate of brood stock was up to 85%.By controlling the density of larvae,feeding fresh unpolluted single-celled algae and using other scientific management methods,the larvae rapidly grew to 300μm.Upon the eyespot larvae appear,scallop shells were dropped to collect the seedlings.The metamorphosis rate of eyespot larvae reached 16.0%.At the end,more than 384 million spat with shell height above 0.4 mm were obtained.The seedling output was 24.0×10^(4)ind./m^(3),and 960×10^(4)each piece.We met success in artificial breeding of northern C.ariakensis,and laid a solid foundation for the restoration of its resource.

关 键 词：近江牡蛎 人工育苗 孵化 附着 

分 类 号：S968.31[农业科学—水产养殖]