甲壳动物的生殖量与环境关系：Ⅰ.枝角类

生殖量是生殖潜力(reproductivepotential)的一个主要标志,也是生态系统(含生产力)和种群生态学(含数量变动)的一个主要内容。它在很大程度上是由遗传因子(基因)决定的,表现在各类动物的生殖量有很

Reproductive Capacity of Crustacea in Relation to the Environment,I.Cladocera

A brief review is given on the reproductive capacity of Cladocera in relation to environment,with emphasis on the effect of external factors such as temperature and food.In general,lower temperature and richer food are favorable for the high production of eggs or young.Asto internal factors,age is the most important factor affecting reproductive capacity.Fecundityor fertility is directly proportional to age by the period of maximum egg production and dec-reases at later instars when the metabolic rate declines.In the future,more attentions shouldbe paid to the effect of internal factors such as gene,hormone,metabolism,etc.,so as tounravel the physiological mechanism underlying the reproductive capacity.