海黍子室内人工育苗技术的研究  

Indoor artificial seeding of seaweed Sargassum muticum

作　　者：曹淑青[1,2] 张泽宇[1,2] 王国书[1,2] 由学策[1,2] 刘宏宇[1,2] 

机构地区：[1]大连水产学院,辽宁大连116023 [2]农业部海洋水产增养殖学重点开放实验室,辽宁大连116023

出　　处：《大连水产学院学报》2008年第5期359-363,共5页Journal of Dalian Fisheries University

基　　金：“十一五”国家科技支撑计划项目(2006BAD09A01)

摘　　要：于2007年6月以虾夷扇贝贝壳和尼龙绳作为附着基，采集了浮筏栽培和自然海区中生长的海黍子Sargassum muticum成熟种藻的受精卵，观察了受精卵的萌发过程，并对其进行了室内人工育苗的研究。结果表明，在水温17—18℃条件下，海黍子受精卵放出2h后开始萌发，形成2个细胞，1d后形成4～6个细胞的多细胞体，2d后生出假根，藻体直立后成为幼苗。幼苗生长的适宜温度为s22℃，超过23℃后幼苗生长停止；幼苗生长的适宜光照为2000～6000lx；适宜的NaNO3添加量为60～100mg／L。经过近4个月的培养，海黍子幼苗的平均长度为2cm，幼苗密度为7～20棵／cm^2。The germination and development of zygotes released on shells and nylon strings were observed in seaweed Sargassum muticum collected from the culture ropes and wild habitat in June 2006. The zygotes were found to divide first 2 h after releasing, to reach four or six cells stage within 24 h and to develop into rhizoids 2 days after releasing at 17 - 18 ℃. The seedlings grew quickly under 22 ℃ at 2000 - 6 000 lx in natural seawater supplemented with 60 - 100 mg/L NaNO3 and did not grow over 23 ℃. The sporelings reached 2 cm in length at a rate of 7 -20 individuals/cm^2 in about four month cultivation.

关 键 词：海黍子 室内培养 人工育苗 

分 类 号：S968.42[农业科学—水产养殖]