淡水养殖大黄鱼技术初探  

Techniques on Large Yellow Croaker Culture in Freshwater

作　　者：黄伟卿 

机构地区：[1]宁德市富发水产有限公司宁德市鼎诚水产有限公司福建省大黄鱼企业重点实验室,福建宁德352103

出　　处：《水产科学》2015年第5期327-330,共4页Fisheries Science

基　　金：国家星火计划项目(S2013C400028);宁德市渔业科技推广补助项目

摘　　要：对大黄鱼进行淡化养殖,首先将23日龄的大黄鱼苗种,从自然海水盐度28.46直接降至8.00,然后以2.00/d降盐幅度,再将盐度降至4.00,紧接着以1.00/d降盐幅度,继续将盐度降至2.00,最后以0.50/d的降盐幅度,将盐度降至0,经过4个月的纯淡水养殖,成活率为(59.02±6.01)%,显著高于其他的驯化方式(P<0.01);水温为23~29℃,淡水养殖成活率[(59.02±6.01)%^(90.74±1.09)%]显著高于海水养殖对照组的成活率[(30.33±6.17)%^(55.32±6.66)%](P<0.01);淡水养殖大黄鱼全长、体长和体质量特定生长率均值分别为(0.59±0.16)%/d、(0.70±0.22)%/d和(2.26±0.94)%/d,分别比海水养殖对照组高78.79%、52.17%和68.66%。Juvenile large yellow croaker（Larimichthys crocea）was acclimatized and cultured in freshwater for 4months.The 23 day old large yellow croaker was directly acclimatized from seawater at a salinity of28.46 to 8.00,to a salinity of 4.00,then to a salinity of 2.00 at a rate of 1.00/d,and finally to freshwater by 0.50/d.The survival rate was found to be（59.02±6.01）%,very significantly higher than that in the other acclimatization patterns（P〈0.01）.There was very significantly higher survival rate [（59.02±6.01）—（90.74±1.09）]% at water temperature of 23—29 ℃in freshwater aquaculture than that in the control group in the seawater[（30.33±6.17）—（55.32±6.66）]%（P〈0.01）.The large yellow croaker farmed in the freshwater had 78.79% higher total length（0.59±0.16）%/d,52.17% higher body length（0.70±0.22）%/d,and 68.66% higher mean specific growth rate in body weight（2.26±0.94）%/d than those in the control group in the seawater.

关 键 词：大黄鱼 淡水养殖 成活率 特定生长率 

分 类 号：S965.322[农业科学—水产养殖]