A Novel, Unusual (at Least for Beetles) Mode of Kenyon Cell Production in the Diving Beetle Cybister lateralimarginalis Deg. (Coleoptera: Dytiscidae)

摘要

Kenyon cell production in the mushroom bodies of Cybister lateralimarginalis is a peculiar process. It has been found that each proliferative center contains one giant neuroblast, which divides unequally, and its smaller daughter cell becomes the 2nd order neuroblast dividing unequally as well. The smaller daughter cell of this neuroblast becomes a ganglion mother cell. The latter, as usual, divides equally producing two Kenyon cells.