Rudimentary parthenogenesis inTenebrio molitor L.

Summary

It is evident that in animals belonging to the most different groups, the unfertilized eggs have more or less the power to develop. This is therefore a common property of the egg cell. Control experiments are therefore in experimental parthenogenesis a necessity. The development takes place very slowly and is irregular. The development frequently stops early, after which degeneration sets in. The mitosis is often irregular. There is perhaps budding and amitosis.

The virgin females I used in this research were sent me by Mr Arendsen Hein, Utrecht; I wish to thank him in this place. As the females were separated in the pupal state, the possibility of fertilization was absolutely excluded.