中国林蛙蝌蚪对盐度和pH的耐受性  

Tolerance to saltness and pH in tadpole Rana chensinensis

作　　者：杨富亿[1] 邵庆春[1] 李景林[1] 陈国双[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所,长春130012

出　　处：《生态学杂志》2004年第2期37-40,共4页Chinese Journal of Ecology

基　　金：中国科学院创新工程重大项目资助 (KZCX1-Y -CA -0 7)

摘　　要：分别在正常盐度不同 pH值、正常 pH值不同盐度和相同水温 18 3～ 2 0 7℃的条件下 ,进行中国林蛙蝌蚪对盐度和 pH值的耐受性实验。结果表明 ,在pH值为 6 8～ 7 0时 ,盐度在 2 0～ 3 0g·L-1对蝌蚪 96h存活率没有明显影响 ;随着盐度的增加 ,蝌蚪存活率下降 ;盐度对蝌蚪 2 4、4 8、72和 96h的TLm 值分别为 8 79,7 12 ,5 6 4和 3 83g·L-1,安全浓度为 1 73g·L-1。在盐度为 0 18g·L-1时 ,pH值在 4 3～ 9 7范围内对蝌蚪 96h存活率没有明显影响 ;pH值对蝌蚪的 2 4 ,4 8,72和 96h的TLm 值分别为 10 33,10 18,10 0 8和 10 0 2。生产上中国林蛙蝌蚪生存的适宜 pH值为 6 0～ 9 0 ,适宜盐度为 1 0～ 2 0g·L-1。Two experiment systems were designed. The results showed under the same water temperature 18.3～20.7 ℃ when pH 6.8～7.0, the survival rate of tadpole for 96 h was not affected from the salinity 2.0～3.0 g·L -1 , The survival rate of tadpole fell with the increate of the salinity. The salinity TL\-m at 24, 48, 72 and 96 h were 8.79, 7.12, 5.64 and 3.83 g·L -1 , respectively. The safety concentration was 1.73 g·L -1 . When the salinity 0.18 g·L -1 , survival rate of tadpole for 96 h is not affected from pH 4.3～9.3, pH TL\-m at 24, 48, 72 and 96 h were 10.33, 10.18, 10.08 and 10.02. pH 4.3～9.7 and the salinity 1.0～2.0 g·L -1 were all suitable in the survival and growth of tadpole Rana chensinensis.

关 键 词：中国林蛙 蝌蚪 盐度 PH 耐受性 存活率 

分 类 号：S917[农业科学—水产科学]