It has proved the most effectivepopulation control measure so far adopted.
它已经被历史证明是最有效的人口控制措施。
2
Effectivepopulation size and breeders selection manners affect the effect of breeds conservation.
群体有效大小和留种方式影响保种的效果。
3
That number is smaller than current figures for the effectivepopulation size (or number of breeding individuals) for endangered species such as chimpanzees (21, 000) and gorillas (25, 000).