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包头地区自１９８２年证实为长爪沙鼠鼠疫自然疫源地后，１０多年坚持以杀灭主要宿主长爪沙鼠为主的大面积灭鼠工作，灭鼠时间多集中在初冬季节。此间，疫源地内分布的达乌尔黄鼠正处在冬眠期，灭鼠对其种群影响甚微，致使其种群密度渐增，分布范围扩大，在啮齿类群落中构成比?
Baotou area since 1982 confirmed as a natural foci of Meriones unguiculatus, 10 years adhere to kill the main host Meriones mainly based large-scale anti-rat work, rodent control time and more concentrated in the early winter season. Here, the Daurian ground squirrels distributed in the foci are in hibernation stage. Rodenticides have little effect on their populations, resulting in their population density increasing and the distribution range expanding, forming a ratio in the rodent community.