摘要
对三疣梭子蟹Portunus trituberculatus"黄选1号"群体进行盐度胁迫试验,结果表明:24、48、72 h低盐海水对三疣梭子蟹的半致死浓度分别为5.13、7.49和8.56;24、48、72 h高盐海水的半致死浓度分别为54.49、52.74和52.21;三疣梭子蟹"黄选1号"安全存活盐度为13.7～47.7。在三疣梭子蟹安全存活盐度范围内设置6个盐度梯度,分别为18.7、23.7、28.7、33.7(自然海水对照组)、38.7和43.7,在不同盐度梯度下对80日龄三疣梭子蟹"黄选1号"进行40 d的养殖试验,结果表明:各盐度组三疣梭子蟹的存活率分别为60%、59%、63%、49%、48%和38%;低盐组(18.7、23.7、28.7)的存活率、增重率和蜕皮速度均比高盐组(33.7、38.7和43.7)好且差异显著(P<0.05)。综合比较表明,三疣梭子蟹"黄选1号"生长的最适宜盐度为28.7。
The tolerance of swimming crab Portunus trituberculatus ＂Huangxuan No.1＂ to salinity was studied in a laboratory.The results showed that the swimming crab had salinity LD50 of 5.13 for 24 h,7.49 for 48 h,and 8.56 for 72 h,though it was safely alive in salinity from 13.7 to 47.7.The 80-day old swimming crab juveniles were reared at a safe salinity of 18.7,23.7,28.7,33.7（control）,38.7,and 43.7 for 40 days.It was found that the juveniles showed a survival rate of 60% at a salinity of 18.7,59% at 23.7,63% at 28.7,49% at 33.7,48% at 38.7,and 38% at 43.7.There were significantly higher survival rate,weight gain rate and molting frequency in the swimming crab at lower salinity of 18.7,23.7 and 28.7 than those in the other groups at higher salinity of 33.7,38.7,and 43.7.Comprehensive comparison suggests 28.7 be the optimal salinity for growth in ＂Huangxuan No.1＂.
出处
《大连海洋大学学报》
CAS
CSCD
北大核心
2012年第5期398-401,共4页
Journal of Dalian Ocean University
基金
国家"863"高技术研究发展计划项目(2006AA10A406)
国家自然科学基金资助项目(30871933)
农业科技成果转化资金项目(2010GB23260589)
关键词
三疣梭子蟹
“黄选1号”
盐度耐受性
生长性能
Portunus trituberculatus
＂Huangxuan No.1＂
salinity tolerance
growth performance
作者简介
隋延鸣（1985-），男，硕士研究生。E—mail：suiyanmingl23456@126．com
刘萍（1962-），女，研究员。E-mail：liuping@ysfri．ac．cn
