摘要
就放养密度对九孔鲍 (Haliotisdiversicolorsupertexta)的生长及存活率的影响进行了4个月的养殖实验。实验结果显示 :九孔鲍的生长明显地受到放养密度的制约。在5个实验密度组中 (分别为每养殖笼中放养35 ,40,45 ,50和55个鲍 )以低密度组的生长率为最高 ,达118.57μm/d。随着放养密度的增大 ,其生长率逐渐下降。但各密度组的存活率之间差异不显著。研究同时发现 :九孔鲍的壳长与湿体质量的关系为 :W=0.000093605×L3.0395;每月一次对鲍壳长的测量会对该鲍的生长有明显影响 ,在同等养殖密度和养殖条件下 ,不进行测量的对照组生长率比实验组的要高出15.4%(16.25μm/d) ;另外 ,九孔鲍的生长与水温也有明显关系 ,其生长的临界温度为14.8℃。
A four month′s growth experiment was conducted at Nan′ao Sea Products Development Co.,Ltd.,Shenzhen.In the five density treatments,35,40,45,50,55ind./cage,the highest growth rate(118.57μm/day)was present in35ind./cage;and there was no difference among the survival rates.The relationship between wet body weight and shell length was also found:W=0.000093605×L 3.0395 .This study also found that the measurement of shell length would affect the growth of abalone,the growth rate of control group was15.4%higher than that of D45group;meanwhile,the critical growth temperature of Haliotis diversicolor supertexta was14.8℃.
出处
《海洋科学》
CAS
CSCD
北大核心
2003年第10期10-14,共5页
Marine Sciences
