【摘要】 研究了水流及水平流速对凡纳滨对虾幼虾生长存活的影响,试验结果表明:水流及其流速、流向是影响凡纳滨对虾幼虾生长存活的重要环境因子。静水环境不利于对虾的增长、增重和存活,易加大对虾个体间体长规格的差异;水平水流与曝气垂直水流均具有促进对虾生长和存活的作用,特别是水平水流环境更有利于养殖对虾的生长、规格整齐和存活,同时在0.63~2.78 mm/s流速范围内,对虾的生长随着水平水流的流速增大而加快,规格越整齐;F检验表明,分别在静水、水平水流、曝气垂直水流环境中生长的对虾体长、体重增长量与成活率间存在显著差异;2.78 mm/s流速的水平水流是1~3 cm体长对虾最佳生长生存水流。更多还原

【Abstract】 The effects of water current and velocity of horizontal flow on growth and survival of Litopenaeus vannamei juveniles were studied.The results indicated: The water current,direction of flow and velocity of horizontal flow were the most important environmental factors of affecting growth and survival of Litopenaeus vannamei juveniles.The still water environment was unfavorable to life and growth of juveniles,and easy to cause juvenile’s body irregularity.Horizontal water current and aerated vertical water current promoted the growth and survival of the shrimp both.Especially,horizontal water current was very favorable to shrimp growth,shrimp body regularity and shrimp survival.In the 0.63-2.78 mm/s range of velocity of horizontal flow,with velocity of flow speeding up,the shrimp growth speed increased and the shrimp body became more regular.There were significant differences among the means of the increment of body length and weight and survival rate of Litopenaeus vannamei juvenile respectively living in calm water,horizontal water current and aerated vertical water current by F-test.2.78 mm/s of velocity of horizontal flow was optimal growth and survival of 1-3 cm Litopenaeus vannamei juveniles.更多还原