四种理化因子对双齿许水蚤卵子孵化率的影响  

Effects of Four Physicochemical Factors on Hatching Rate of Schmackeria dubin

作　　者：罗晓霞[1] 黄翔鹄[1] 黄子华[1] 

机构地区：[1]广东海洋大学水产学院,广东湛江524025

出　　处：《广东海洋大学学报》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)

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.

关 键 词：双齿许水蚤 理化因子 孵化率 

分 类 号：Q959.223.3[生物学—动物学]