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湖泊科学  2009 

环境激素氰戊菊酯和有机锡对轮虫生活史特征的影响

DOI: 10.18307/2009.0512

Keywords: 萼花臂尾轮虫,氰戊菊酯,TBTC,EDCs,生命周期,种群增长

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Abstract:

采用单"克隆"培养和群体培养的方法,研究了具有环境雌激素效应药物氰戊菊酯(Fenvalerate)和雌性雄性化激素效应药物三丁基氯化锡(TBTC)对萼花臂尾轮虫(Brachionuscalyciflorus)生命周期中各发育阶段的历时以及种群增长的影响.结果表明,氰戊菊酯和TBTC对萼花臂尾轮虫的生长发育和种群增长有明显的效应.氰戊菊酯使生殖期延长(200和1000μg/L),生殖后期缩短,平均寿命也缩短(除1000μg/L),总产卵量和种群增长率升高;而经TBTC处理生殖前期延长(1和5μg/L),生殖期和生殖后期缩短,平均寿命也缩短,总产卵量和种群增长率较对照组也有下降.批次携卵量也受到两种药物的影响.且萼花臂尾轮虫的总产卵量随着氰戊菊酯和TBTC的浓度呈曲线相关,氰戊菊酯:Y=-0.6745X2+6.6884X+5.855(R2=0.7027);TBTC:Y=0.2054X2-2.3178X+16.666(R2=0.6535).研究表明环境雌激素氰戊菊酯和雌性雄性化激素TBTC对萼花臂尾轮虫生活史特征影响表现出一定差异.

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