Neurogenesis in the trunk and brain of the milkweed bug Oncopeltus fasciatus: insights beyond holometabolan models.

ABSTRACT: Current research on insect neurogenesis is focused on Holometabola, which undergo a derived developmental mode that includes metamorphosis, leading to a partial representation of the range of neurogenesis patterns in the embryonic insect nervous system. In this paper, we investigate neurogenesis in the hemimetabolous insect Oncopeltus fasciatus, focusing on both the trunk and brain regions. Our findings reveal early neuroblast formation in the brain, followed by a second phase in the whole embryo. Notably, we did not find gene expression patterns consistent with pro-neural clusters in Oncopeltus, and the brain exhibits characteristics that do not exist in the trunk. We also highlight similarities between segmentation and neurogenesis, proposing that spatial cues play a key role in this dif

SUBMITTER: Alon N 

PROVIDER: S-EPMC12821930 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature