云斑尖塘鳢转饵期仔鱼生长和存活率的研究  

Studies on growth and survival of Oxyeleotris marmorata larva in food transformation period

作　　者：木亮亮 徐慈浩 许爱娱 高腾[1] 肖锐媛 潘淦[1,2] 

机构地区：[1]华南师范大学生命科学学院,广州510631 [2]广州市金洋水产养殖有限公司,广州511447

出　　处：《淡水渔业》2015年第4期70-75,共6页Freshwater Fisheries

基　　金：广东省教育部产学研结合项目(2011B090500009);广东省海洋渔业科技推广专项科技攻关与研发项目(A201201E05(3));番禺区应用技术研究与开发项目(2012-Z-02-07)

摘　　要：在水温(30±1)℃条件下对人工孵化的云斑尖塘鳢(Oxyeleotris marmorata)仔鱼进行转饵期不同投喂策略实验,对仔鱼生长和成活情况进行了研究,设计5个投喂组:轮虫投喂组(A组);70%轮虫+30%卤虫投喂组(B组);50%轮虫+50%卤虫投喂组(C组);30%轮虫+70%卤虫投喂组(D组);卤虫(幼虫)投喂组(E组)。结果显示:云斑尖塘鳢仔鱼对卤虫的摄食强度随卤虫在饵料中比例的升高而增大,其对混合饵料中轮虫和卤虫的摄食强度的比值(Ir/Ia)随食物组成的变化发生相应的变化。以轮虫-卤虫不同比例的混合饵料投喂时,D组仔鱼的增长率、增重率最高,可存活率不足50%,高于E组,显著低于其它各组;C组仔鱼生长指标略低于D组,但存活率为(74.00±2.29)%,综合指标显著好于其它各组。当混合饵料中轮虫和卤虫各占50%时,10日龄开始投喂组仔鱼的全长(13.07±0.13)mm,特定生长率(10.25±0.37)%/d,存活率(82.14±0.72)%,综合生长指标最好。结果表明,云斑尖塘鳢仔鱼转饵期进行联合投喂的最佳饵料比例为50%轮虫+50%卤虫,最佳转饵时间为10日龄。The effects of the different feeding strategy on growth and survival of artificial incubation Oxyeleotris marmorata larva was examined in food transformation period at the water temperature of （30 ＆#177;1） ℃.5 feeding groups included, the rotifer feeding group （ A） , the 70%rotifer and 30%artemia feeding group （ B） , the 50%rotifer and 50%artemia feed-ing group （ C） , the 30%rotifer and 70%artemia feeding group （ D） , and the artemia feeding group （ E） , respectively. The results showed that the feeding intensity of the Oxyeleotris marmorata larva was improved, with the increase of propor-tion of the artemia in mixed bait （ the proportion of rotifer corresponding lower） .So the feeding intensity ratio （ Ir/Ia） of rotifer and artemia in the bait changed along with change of food composition.In the mixed bait feeding, growth rate and weight gain rate were the highest in the group D, while the survival rate was less than 50%, which was higher than group E, but significantly lower than the other groups.The growth indicators of group C were slightly lower than group D, while the survival rate was （74.00 ＆#177;2.29）%and comprehensive index was significantly better than the other groups.When the rotifer and artemia each accounted for 50%, the total length, specific growth rate and survival rate of larvae （10 day age began feeding group） was （13.07 ±0.13） mm, （10.25 ±0.37）%/d and （82.14 ±0.72）%, respectively.The larvalnbsp;growth index was the best in this group.The results indicated that the best bait casting time was 10 days of age.At the same time, in food transformation stage, the best ratio was 50%rotifer and 50%artemia in mixed bait.

关 键 词：云斑尖塘鳢(Oxyeleotris marmorata) 仔鱼 转饵期 生长 存活率 

分 类 号：S965.199[农业科学—水产养殖]