Table 3 Volumes of cerebral structures in E. rowelli relative to total brain volume (TBV) based on SRμCT (entire head scan), and light (LM; serial sections of entire head) and confocal microscopy (CLSM; whole-mount preparations of brains)
From: The velvet worm brain unveils homologies and evolutionary novelties across panarthropods
Structure | Relative volume1 (%) | |||
|---|---|---|---|---|
Ruthenium Red (SRμCT) | Azan (LM) | Synapsin (CLSM) | Acetylated α-tubulin (CLSM) | |
Brain (total) | 100.00 | 100.00 | 100.00 | 100.00 |
Cell body rind | 55.52 | 52.51 | 59.11 | 59.47 |
Brain neuropils | 44.48 | 47.49 | 40.89 | 40.53 |
Brain commissures 1–3 |     – |    – |    – | 0.60 |
Central body |     – | 3.02 | 2.447 | 2.50 |
Frontal body |     – |    – | 3.277 | 4.13 |
Microglomeruli |     – |    – | 0.027 | 0.01 |
Mushroom bodies |     – | 5.26 | 2.592 | 4.23 |
Olfactory glomeruli |     – |    – | 0.567 | 0.51 |
Olfactory fascicles |     – |    – | 1.187 |      – |
Optic neuropils |     – | 0.18 | 0.187 | 0.22 |
Ponticulus |     – | 0.11 |    – | 0.09 |
Other brain neuropils |     – | 35.83 | 30.64 | 28.24 |