摘要
应用模式生物秀丽隐杆线虫,通过生命周期、半数致死天数、生殖速度、产卵数、头部摆动频率和身体弯曲次数等指标对精对苯二甲酸(PTA)废水毒性进行了研究.结果表明,与对照组相比,660mg·L-1PTA废水暴露下的线虫生命周期有一定的延长,产卵时间延迟,头部摆动频率降低,身体弯曲次数减少(P<0.05),且PTA废水对线虫生殖能力的影响极显著(P<0.01),暴露于废水中的线虫产卵数大约只有正常产卵数的1/4.最敏感效应指标——产卵数,有望成为该类废水毒性预警预报的潜在生物标志物.
By using model Caenorhabditis elegans, the toxicity of purified terephthalic acid （PTA） wastewater was evaluated through a battery of biotest, including life span, days of 50% lethal, generation time, brood size, head thrashes, and body bends. The results revealed that compared with control, the life span and generation time of C. elegans exposed to 660 mg PTA· L^-1 were delayed to some degree, and its head thrashes and body bends were inhibited. The procreation function of C. elegans exposed to PTA wastewater was greatly affected, with the brood size being as low as 25% of the normal one. The most sensitive indicator, indicator in evaluating PTA wastewater toxicity. brood size of C. elegans, might be a potential
出处
《应用生态学报》
CAS
CSCD
北大核心
2007年第7期1669-1672,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金重点资助项目(20237010).
关键词
秀丽隐杆线虫
PTA废水
毒性评价
Caenorhabditis elegans
PTA wastewater
toxicity evaluation.
