A statistical study was made of the fertility of Evadne nordmanni, Podon intermedius, P. leuckarti and P. polyphemoides in the Clyde Sea-Area and of the former two species off Plymouth. The mean fertility of parthenogenetic females varies with different species. This is not correlated with the size of the species.Within the species, Evadne nordmanni and Podon intermedius, there exists, in general, a positive correlation between the size and the fertility of parthenogenetic females.The fertility of Evadne nordmanni is subject to seasonal variation. This is not correlated with fluctuations in the abundance of diatoms.An inverse relationship was observed in Evadne nordmanni between the reproductive capacity of parthenogenetic females and the intensity of sexual reproduction.A brief account was given of the formation of the resting egg in Evadne nordmanni and Podon intermedius.

中文翻译：

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论海洋枝角类的繁殖力，并附注 Evadne Nordmanni Loven 和 Podon Intermedius Lilljeborg 中静卵的形成

对生育率进行了统计研究伊万诺德曼尼,豆荚,P. leuckarti和P. polyphemoides在克莱德海域和普利茅斯附近的前两个物种中。单性雌性的平均生育力因物种而异。这与物种的大小无关。在物种内，伊万诺德曼尼和豆荚, 一般而言, 孤雌生殖雌性的大小和生育力之间存在正相关关系。伊万诺德曼尼受季节变化影响。这与硅藻丰度的波动无关。在伊万诺德曼尼雌性孤雌生殖能力与有性生殖强度之间的关系。伊万诺德曼尼和豆荚.