两栖类蝌蚪发育对环境污染比较敏感，可用于对环境污染的生物监测．观察了黑眶蟾蜍胚胎及蝌蚪在生活污水中的发育情况，可以看出随着污染浓度增大，表现为胚胎及蝌蚪死亡率增加，发育时期延长，蝌蚪的体重增加延迟，体长发育延迟，尾部萎缩过程延迟．结果表明：黑眶蟾蜍胚胎在生活污水浓度达到10％为致死量，8％为半致死量．蝌蚪在生活污水中浓度达到80％为致死量，60％为半致死量，50％对发育明显影响，甚至致畸，50％对体长和尾长的影响最为明显．%The growth of amphibian tadpoles are sensitive to environmental pollution, which can be used for the biological monitoring of environmental pollution. Observing embryos and Bufo melanostictus tadpoles in a detergent-based domestic wastewater, with the increasing concentration, showing an increase in mortality, there are three aspects of development which is growth of the extension period, tadpole weight, body length and tail length affected. The results showed that the lethal dose of Bufo melanostictus embryos in sewage concentration is 10%, the semi-lethal dose of Bufo melauostictus embryos is 8%. The lethal dose to Tadpoles in the concentration of domestic sewage for up to 80%, the semi-lethal dose is 60%, 50% of sewage affected obviously, and even teratogenic, 50% of sewage is the most obvious of body length and tail length.
展开▼
