论文部分内容阅读
由动物流行病、不利的天气和其他自然条件或人类的防制活动所导致的老鼠数量的减少可以迅速恢复,即使族群数量减少到原来的5—10%时亦然。这是由于决定老鼠族群生存的临界数量相当低。如果灭
The reduction in the number of mice caused by animal epidemics, adverse weather and other natural conditions or human control activities can be quickly restored, even when the number of ethnic groups is reduced to 5-10%. This is due to the relatively low critical mass that determines the viability of the rat population. If it is off