| 龙晓文,吴旭干,刘智俊,李嘉尧,于智勇,汤臣栋,马强,成永旭.盐度对脊尾白虾存活、生长和蜕壳的影响[J].广东农业科学,2014,41(23):111-115 |
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盐度对脊尾白虾存活、生长和蜕壳的影响 |
| Effects of salinity on survival, growth and molt of Exopalaemon carinicauda |
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| DOI： |
| 中文关键词: 脊尾白虾 盐度 急性突变 生长 成活 蜕壳 |
| 英文关键词: Exopalaemon carinicauda salinity abrupt change growth survival molt |
| 基金项目:上海市科学技术委员会项目（13231203504,13DZ2280500）；国家公益性行业（农业）科研专项（201203081） |
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| 中文摘要: |
| 研究了盐度突变对脊尾白虾成活的影响，以及水体盐度（0、6%、12%、18%）对单个体养殖条件下脊尾白虾生长、成活和蜕壳的影响。结果表明：（1）盐度由6%到0 的突变组，脊尾白虾的成活率最低，96 h成活率仅为6.67%；而盐度由6%至12%、18%的突变组，96 h的成活率均在93%以上。（2）单个体养殖试验结果表明，随着水体盐度提高（盐度0~12%条件下），脊尾白虾最终体长、总体长增长率和成活率均有增加趋势；盐度超过12%时，总体长增长率显著下降，但成活率变化不大。（3）盐度对脊尾白虾的蜕壳周期有一定影响，盐度12%组虾的第1 次、第5 次、第8 次和第9 次蜕壳周期最长；整体上，盐度12%组平均蜕壳周期最长(9.57 d），盐度0 组平均蜕壳周期相对较短（8.47 d）。因此，脊尾白虾对盐度低于6%的水体适应性较差，盐度12%有利于提高该虾的生长速度和成活率。 |
| 英文摘要: |
| This study firtly investigated the effect of salinity shock on survival of Exopalaemon carinicauda, and then examined the effects of different salinities (0, 6%, 12% and 18%) on growth, survival and molt of E. carinicauda by individual culture. The results showed that, (1) When salinity dropped from 6% to 0, the survival rate of E. carinicauda was the lowest, 96 h survival rate was only 6.67%. While when salinity was from 6% to 12%or 18%, 96 h survival rates were above 93%. (2) The results of individual breeding experiment showed that, under the salinity of 0-12%, final body length, body length growth rate(GR) and survival rate of E. carinicauda increased with the salinity increasing; when the salinity exceeded 12%, the GR decreased significantly, but the survival rate had no significant change. (3) Salinity had a certain of effect on the molting cycle of E. carinicauda, and the shrimps from salinity 12% treatment had the longest molting cycle during the first, fifth, eighth and ninth molting. In generally, the shrimps from salinity 12% had the longest molting cycle (9.57 days), while shrimps from salinity 0 treatment had the shortest one (8.47 days). Therefore, E. carinicauda has poor adaptability with the water salinity of less than 6%;and salinity 12% is the optimal level for the growth and survival of E. carinicauda. |
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