廖永岩;邝少芳;

• 1:广东海洋大学水产学院

摘要(Abstract)：

为研究Ni、Zn对三疣梭子蟹幼体的毒性,进行了浓度为1/4至8倍渔业水质标准的Ni、Zn(Ni为0.05～0.4mg·L-1;Zn为0.1～0.8mg·L-1)对蟹幼体生长发育的毒性影响试验.1)Ni对蟹幼体生长发育的毒性影响:Ni浓度为1～8倍渔业水质标准时,蟹幼体混合存活率极显著低于对照组(p<0.01).Ni浓度为4倍渔业水质标准时,蟹幼体发育至Z4就全部死亡,8倍仅发育至Z2就全部死亡;4倍以上时,各期幼体存活率和阶段存活率均显著低于对照组(p<0.05或p<0.01).4倍以上时,蟹幼体发育的最短和最长时间及平均时间均显著高于对照组(p<0.05或p<0.01).这说明,进行三疣梭子蟹幼体培育,4倍以上Ni浓度为不适浓度,1～2倍为可行浓度,1/2倍以下为适宜浓度.2)Zn对蟹幼体生长发育的毒性影响结果发现,Zn浓度为8倍渔业水质标准时,蟹幼体混合存活率显著低于对照组(p<0.01),4倍以下时没有显著差异(p>0.05).4倍时蟹幼体仅发育至C1就全部死亡,8倍仅发育至Z2就全部死亡;4～8倍时各期幼体存活率和阶段存活率均极显著低于对照组(p<0.01).2倍以上时,蟹幼体发育的最短时间显著高于对照组(p<0.05);4倍以上时,蟹幼体发育的平均时间显著高于对照组(p<0.05).这说明,进行三疣梭子蟹幼体培育,4倍以上Zn浓度为不适浓度,2倍Zn浓度为可行浓度,1倍以下为适宜浓度.

关键词(KeyWords)： 三疣梭子蟹;Ni;Zn;幼体发育;重金属;毒性

Abstract:

Keywords:

基金项目(Foundation): 广东海洋大学自然科学基金项目

作者(Author): 廖永岩;邝少芳;

Email:

DOI:

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