抄録
It is generally recognized that amphibian populations are potentially sensitive to aquatic contaminant such as herbicides. However, studies on the effects of herbicides on amphibian species are very limited in Japan. Thus, the toxicity of herbicides for paddy field to the tadpole of Rana dybowskii was examined by the author. Among the eight herbicides tested, only Fujigrass® has a high toxicity to the tadpole. Moreover, based on a comparison of the components of herbicides between the Fujigrass® and other non-toxic herbicides, it has become apparent that esprocarb (1,2-dimethlpropyl (ethyl)-thiocarbamate), the principal component of Fujigrass®, is the toxic substance to the tadpole of Rana dybowskii.
