| 四种理化因子对双齿许水蚤卵子孵化率的影响 |
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| 引用本文： | 罗晓霞,黄翔鹄,黄子华.四种理化因子对双齿许水蚤卵子孵化率的影响[J].广东海洋大学学报,2008,28(4). |
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| 作者姓名： | 罗晓霞 黄翔鹄 黄子华 |
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| 作者单位： | 广东海洋大学水产学院,广东,湛江,524025 |
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| 基金项目： | 科技部农业科技成果转化基金，广东省科技厅科技计划，广东省重大科技兴渔项目 |
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| 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(Schmackeria 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1 000 lx时孵化率大幅度降低至8.8%,在4 000 lx以上时,其不能孵化甚至出现死亡。
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| 关 键 词： | 双齿许水蚤 理化因子 孵化率 |
Effects of Four Physicochemical Factors on Hatching Rate of Schmackeria dubin |
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| LUO Xiao-xia,HUANG Xiang-hu,HUANG Zhi-hua.Effects of Four Physicochemical Factors on Hatching Rate of Schmackeria dubin[J].Journal of Zhanjiang Ocean University,2008,28(4). |
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| Authors: | LUO Xiao-xia HUANG Xiang-hu HUANG Zhi-hua |
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| Abstract: | 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. |
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| Keywords: | Schmackeria dubin physicochemical factors hatching rate |
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