一周后，产卵力开始明显下降。
生命周期、世代时间、繁殖力和产卵量是决定这两种桡足类垂直移动的主要因素。
Life cycle, generation time, fecundity, and egg production quantity are the main factors to determine these two species' vertical migration.
选择每雌产卵量做为衡量雌蛾生殖力的主要生理指标，对所产卵的孵化率也进行了观察。
The number of eggs laid by each female was used as the principal physiological standard of fecundity.
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