[BPT04-P06] 有孔虫Spirillina viviparaにおける有性生殖時の細胞動態
キーワード：有孔虫、飼育、細胞生物学、イメージング
Foraminifera performs both asexual and sexual reproduction. In asexual reproduction, it has been reported that the cytoplasm of one foraminifer into 10 to more than 1000 individuals and proliferates. However, foraminifera proliferated many cases by only asexual reproduction in culture experiments. Therefore, information about sexual reproduction is limited. In sexual reproduction, many foraminifers form zoospores and release them to the outside. It has been reported that the released zoospores cross each other and become new individuals. In other benthic foraminifera, there are known species in which 2 to 3 foraminiferal cells are mixed and sexually reproduced.
In this study, we observed cell dynamics of sexual reproduction in the foraminifer Spirillina vivipara. This species grows a tubular spirally shell with cytoplasmic growth. It is known that S. vivipara grows rapidly and changes generation rapidly enough to divide from the mother cell and become reproductive in a few days (Myers, 1936). In our observations, it was observed that the generation changes while repeating asexual reproduction and sexual reproduction in about 5 to 14 days, so in this study, we described cell dynamics of the sexual reproduction of S. vivipara in detail.
In this study, we observed cell dynamics of sexual reproduction in the foraminifer Spirillina vivipara. This species grows a tubular spirally shell with cytoplasmic growth. It is known that S. vivipara grows rapidly and changes generation rapidly enough to divide from the mother cell and become reproductive in a few days (Myers, 1936). In our observations, it was observed that the generation changes while repeating asexual reproduction and sexual reproduction in about 5 to 14 days, so in this study, we described cell dynamics of the sexual reproduction of S. vivipara in detail.