Development of Plasmodium praecox in Culex pipiens pallens
1941 年 11 巻 4 号 p. 526-536
詳細
1941 年 11 巻 4 号 p. 526-536
1. The development of Plasmnodbou praecox in Cnlex pipiens pallens from 3 days to 17 days after feeding on the blood of infected canaries was studied cyto-histologically.
2. Normal ookinetes remained in the stomach of C. pipiens pallens until 11 days after feeding, but degenerating ookinetes were observed on the 17th day after feeding.
3. The formation of young oocysts of the parasites was observed within the stomach, but further development could not take place.
4. The development of P praecox in C. pipiens pallens is a matter of degree, namely, four types of development were observed in the individual mosquito of this species.
5. It was suggested that C. pipiens pallens has two races or two groups of individuals of the same race with regard to immunity from infection with P. praecox.
In conclusion, the writer wishes to thank Prof. H. Kikuchi of the Japanese Army Medical College, Tokyo, for his kindness and help in facilitating the present work.
