室内养殖管角螺幼体的生长特性  

Study on the Growth in Artificial Culture of Hemifusus tuba Larvae

作　　者：段雪梅[1] 蒋霞敏[1] 王春琳[1] 柴学森[1] 夏周[1] 陆珠润[1] 

机构地区：[1]宁波大学生命科学与生物工程学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2010年第4期6-9,共4页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：浙江省重大科技专项(2009C12076);浙江省大学生科技成果推广项目(013450932);浙江省大学生科技创新基金(013450904)

摘　　要：在室内养殖条件下,研究了水泥池养殖管角螺幼体的生长特性.结果显示:初孵稚螺早期壳高与螺重的生长速度都很快,旬增长率最高时分别达到186.7%、313.2%,以后生长逐渐减慢.壳高呈对数生长L=21.494lnd+2.0343(R2=0.9783);螺重呈幂形生长W=0.0388d2.5069(R2=0.962);稚螺螺重与壳高之间呈幂函数W=0.0001L2.770 8(R2=0.9569).不同时期稚螺成活率达到80%以上,壳高长至21.9mm以上,幼螺死亡逐渐减少,成活率均保持在91.6%～99.7%.不同时期的出肉率差别不显著,均达到50%以上.The growth characteristics of Hemifusus tuba larvae in early phase are investigated with indoor condition.The results show that the 10 d growth rate outpaces others and the maximal growth rate of 10 d in length at different stages is identified as being 186.7%,the maximal growth rate in weight being 313.2%.But the growth rate decline gradually at the later stages.The logarithm mode is fitted on the basis of body weight and feeding days,which can be expressed as W=21.494lnd＋2.034 3（R2=0.978 3）.The power mode is fitted on the basis of body length and feeding days,which is L=0.038 8d2.506 9（R2=0.962）.The power model is fitted on the basis of body weight and length,that is,W=0.000 1L2.770 8（R2=0.956 9）.The viability in different stages is found to be more than 80%.When body length is beyond 21.9 mm,the death of larvaes reduces gradually and the survival rate range from 91.6% to 99.7%.The meat output ratio at different stages is more than 50%.

关 键 词：管角螺 生长 成活率 出肉率 

分 类 号：S968[农业科学—水产养殖]