Abstract

To study the relationship between synaptic connectivity and circuit function, the authors compared network connectivity in the pharyngeal nervous system (PNS) of two related nematode species with different feeding behaviours, one microbivore and one predatory. A graph theoretical approach revealed that the two nematodes showed greatly different wiring of neurons that are homologous in terms of cell body position and neurite anatomy. The data suggest that the increased behavioural complexity of the predatory nematode is associated with increased complexity of PNS connectivity.

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