Research progress of targeted bait for rodent pest control in grasslands of China
Rodents are indispensable components in grassland ecosystems,and play important roles in maintaining the ecosystem structure. However,rodent pest damage is also one of the reasons for grass-land degradation in China. Rodent pests are diversified in different grassland types in China. Therefore,a"one rodent pest species to one control strategy"is necessary for grassland pest control. Under the pol-icy of"ecological priority and green development"in China,the prevention and control of grassland ro-dent pests should follow the environment-friendly way with"specific treatment and precise control for specific rodent species". However,at present,the chemical control of rodent pests in China faces the di-lemma of few rodenticides being permitted in grassland,long research and development cycle of new rodenticides and strict registration procedure,and poor specificity of effective constituents in current ro-denticides,which is difficult to change in the short term. Improving the target specificity of base bait can be an expected solution. Targeted bait is designed to increase the attraction for target pests to feed them,improve the target specificity of existing rodenticide,reduce the harm to non-target ani-mals,save grains used for baits and maintain the biodiversity in grassland ecosystems. Targeted bait has broad application prospects in grassland rodent pest control in China. However,there are few researches on targeted bait either in action mechanism or application. In this article,we review the research and de-velopment status and classification of baits for rodent pest control,the advantages and disadvantages of various types of baits,and the ways to improve the target specificity. We aim to draw the attention of scholars and enterprises related to the rodent pest control in grasslands in China.