摘要
为了实现在传统养殖模式基础上,通过增加养殖密度,把养殖成活率提高到85%左右,单位水体产量提高到20 kg·m^(-3)水体的目标,笔者对卵形鲳鲹深海网箱养殖的2种新型养殖模式进行了研究。结果表明:"一次性放苗,2批次渔获"模式不同试验组对养殖成活率和单位水体产量有明显影响(P <0. 05)。试验组1成活率最高,为(85. 82±0. 95)%,试验组4最低,为(83. 4±0. 21)%;单位水体产量试验组4最高,为(21. 29±0. 31) kg·m^(-3),试验组2最低,为(17. 95±0. 49) kg·m^(-3),仅试验组3捕捞组合方式达到试验设计目标,即第1次捕捞的商品鱼规格应控制在300～350 g之间。"一次性放苗,3批次渔获"模式养殖成活率在不同试验组间无显著性差异(P>0. 05),试验组2最高,为(85. 79±0. 24)%,试验组4最低,为(84. 0±0. 36)%;单位水体产量试验组1,3,5,6之间及试验组2和4之间均无显著性差异(P>0. 05),但试验组2和4明显高于其他试验组(P <0. 05),分别为(21. 34±1. 17) kg·m^(-3)和(21. 64±1. 18) kg·m^(-3),且该模式中,试验组2和4均能达到试验设计目标,即采取第1次捕获商品鱼规格为300～350 g,捕获量为40%～50%,第2次捕获规格为400～450 g,捕获量为50%～60%的捕捞组合。
In order to achieve the goal of improving the survival rate to around 85%and the fish yield per cubic meter of water to 20 kg·m^-3 by increasing aquaculture density on the basis of traditional aquaculture model,two new aquaculture models for Trachinotus ovatus in deep sea cages were tried.The results showed that the survival rate and the yield per cubic meter of water were significantly affected by different experimental groups in the model of“One release of fingerlings and two batches of catches”(P<0.05).The experimental group 1 had the highest survival rate(85.82±0.95)%,while the experimental group 4 was lowest in survival rate(83.4±0.21)%.The experimental group 4 had the highest yield per cubic meter of water[21.29±0.31(kg·m^-3)]while the experimental group 2 the lowest(17.95±0.49)kg·m^-3.In this model,only the experimental group 3 met the experimental design objective when combined with catching,i.e.the size of marketable fish be in the range of 300-350 g in the first batch of catch.However,in the model of“One release of fingerlings and 3 batches of catches”,the survival rate was not significantly different between different experimental groups(P>0.05).The experimental group 2 was the highest in survival rate(85.79±0.24)%,and the experimental group 4 the lowest(84.0±0.36)%.There was no significant difference in the yield per cubic meter of water between the experimental groups 2 and 4(P>0.05),and the same results were found among the experimental groups 1,3,5 and 6.However,the experimental groups 2 and 4 were significantly higher in yield per cubic meter of water than the other experimental groups(P<0.05),and their yields per cubic meter of water were(21.34±1.17)and(21.64±1.18)kg·m^-3,respectively.Moreover,in this model,the experimental groups 2 and 4 achieved the experimental design objectives when the size of marketable fish be 300-350 g in the first batch of catch with 40%-50%of the total catches,and 400-450 g in the second batch of catch with 50%-60%of the total catches.
作者
林川
何永姑
王小兵
LIN Chuan;HE Yonggu;WANG Xiaobing(Hainan Agricultural School,Haikou,Hainan 571100;Ocean Colleague,Hainan University,Haikou,Hainan 570228;Colleague of Materials and Chemical Engineering,Hainan University,Haikou,Hainan 570228;Lingao Haifeng Aquaculture Co.Ltd,Haikou,Hainan 570206,China)
出处
《热带生物学报》
2018年第4期363-369,共7页
Journal of Tropical Biology
基金
海南省重大科技项目(ZDKJ2016011)
关键词
卵形鲳鲹
网箱养殖
渔获方式
成活率
产量
Trachinotus ovatus
cage culture
catching method
survival rate
yield
