重金属镉对花背蟾蜍蝌蚪生长发育的影响  

Effect of cadmium on the development of tadpoles of the Bufo raddei

作　　者：黄德军[1] 张迎梅[1] 赵东芹[1] 龙静[1] 汪贵英[1] 胡之德[2] 

机构地区：[1]兰州大学生命科学学院 [2]兰州大学化学化工学院,甘肃兰州730000

出　　处：《兰州大学学报（自然科学版）》2004年第2期81-83,共3页Journal of Lanzhou University(Natural Sciences)

基　　金：甘肃省自然科学基金(ZS021-A25-102-Y)

摘　　要：研究了镉质量浓度在0.0015,0.0300和0.1500mg/L时对花背蟾蜍(Bufo raddei)蝌蚪生长发育的影响。结果表明:不同质量浓度镉能缩短花背蟾蜍蝌蚪50％出膜时间,但对蝌蚪最终孵化率没有影响;镉能影响蝌蚪的生存率,对蝌蚪的生长发育具有明显的抑制作用(P<0.01),但组间差异均不显著(P>0.05);同时各质量浓度水平均导致蝌蚪头部泡状膨大、‘S’型尾和体形奇小(为正常体长的0.50～0.67)等,致畸率0.1500 mg/L质量浓度水平最高(2.25％),0.0300 mg/L水平次之(2.00％),0.0015 mg/L水平最低(0.50％)。Effects of three different concentrations (0.001 5, 0.030 0 and 0.150 0 mg/L) of cadmium on Bufo raddei tadpole development showed that each treatment could shorten the time for 50% tadpoles' hatching, but have no effect on the hatching rate. Different cadmium concentrations could affect the mortality, the tadpole survival rate and development (P<0.01); but there was no significant difference for each experiment group (P>0.05). All treatment brought about malformation of the tadpoles with the rates of 2.25% (0.150 0 mg/L), 200% (0.030 0 mg/L) and 0.50% (0.001 5 mg/L).

关 键 词：镉 花背蟾蜍蝌蚪 生长发育 死亡率 

分 类 号：Q959[生物学—动物学]