摘要
研究了温度、盐度、pH、光照强度等理化因子对双齿许水蚤（Schraackeria dubin）孵化率的影响。结果表明，温度对双齿许水蚤的孵化率影响显著（P〈0．05），其最适温度为30℃，孵化率达82．7％；盐度对双齿许水蚤的孵化率影响不显著（P〉0．05），在盐度5～40的范围内均能正常孵化；pH对双齿许水蚤的孵化率影响显著（P〈0．05），其适宜pH为6．5～8．5，孵化率达83．0％；光照强度对双齿许水蚤的孵化率影响显著（P〈0．05），在照度为100 lx时其孵化率为69．1％，在1000 lx时孵化率大幅度降低至8．8％，在4000 lx以上时，其不能孵化甚至出现死亡。
The effects of temperature, salinity, pH and illuminance on the hatching rate of Schmackeria dubin were studied. The result showed that temperature had a significant effect upon S. dubin （P 〈 0.05）, at the most suitable temperature of 30 ℃, the hatching rate reached 82.7%. Salinity did not affect significantly on the hatching rate of Schmackeria dubin （P 〉 0.05）. S. dubin＇s hatching rate was normal when the salinity was in a range from 5 to 40. The influence of pH upon S. dubin＇s hatching rate was significant （P 〈 0.05）, optimal range of pH was 6.5 - 8.5, while the hatching rate was high, reaching 83.0%. Illuminance affected the hatching rate of S. dubin （P 〈 0.05）, the hatching rate was 69.1% when illuminance was 100 lx, and the hatching rate had drastically reduced to 8.8% when it was 1000 lx. However, S. dubin could not be hatched and even died when illuminance was 4 000 lx or above.
出处
《广东海洋大学学报》
CAS
2008年第4期65-68,共4页
Journal of Guangdong Ocean University
基金
科技部农业科技成果转化资金项目(2006GB2E000224)
广东省科技计划项目(2006A20305003)
广东省重大科技兴海(兴渔)项目(B200608A203)
关键词
双齿许水蚤
理化因子
孵化率
Schmackeria dubin
physicochemical factors
hatching rate
