All bdelloid rotifers are female, and they make embryos without any need for sperm.

所有的蛭形轮都是雌，而且们不需要精子就可以产胚胎。

Competition between the rotifer Brachionus calyciflorus and the cladoceran moina macrocopa in relation to algal food concentration and initial rotifer population density.

温度和食物浓度对三品系萼花臂尾轮实验种群动态的影响。

Take a lineage of microscopic marine animals known as bdelloid rotifers.Most rotifers reproduce sexually, but bdelloid rotifers abandoned sex about 100 million years ago.

就拿海洋中的微小动物蛭形轮来说，大部份轮行有，但是蛭形轮已经把丢开约一亿年了。