Motor partner clustering in one dauer C. elegans map was within sampled ranges under degree and contact area constraints

We tested motor partner clustering in one dauer C. elegans map. The test used 38 motor neurons from Yim et al. (2024). An undirected partner edge required a positive chemical entry in either direction. Mean clustering was 0.401 in Dauer and 0.319 in Adult 2. Four chains per map gave model means of 0.364 and 0.327. The central 95 percent sampled ranges were 0.291 to 0.451 and 0.226 to 0.435. Both observed scores and both triangle counts were inside these ranges. The model fixed every cell degree. It also fixed total edge counts in three positive contact area groups and a zero-contact group. The two-group and common-node checks kept this result. Five-group chains had poor mixing for retained original edges. That check remained inconclusive. These model ranges are not animal population intervals. The sampler has no proof of full contact-constrained graph-space coverage. This result concerns undirected partner choice. It does not re-test the directed clustering measure or establish a physiological mechanism.

connectome · C. elegans · dauer · motor neurons · contact area · clustering · graph reference · reproducibility