Structure of the pecten neuropil pathway and its innervation by bimodal peg afferents in two scorpion species
Fig 9
Median pegs innervate central areas within the pecten neuropil of Mesobuthus eupeus.
Maximum projections of cLSM stacks. Synapsin-immunoreactivity (grey), anterograde tracing (green) and nuclei staining (magenta). (A) Medially situated pegs innervate median parts of the posterior pecten neuropils 1 and 2 (PPN1, 2) (horizontal view). The anteriorly proceeding tract is located near the ganglion midline (arrowhead) and terminates in the anterior pecten neuropil (APN). (B) PPN2 and PPN3 are innervated antero-ventrally by medial peg afferents (white arrow) (sagittal view). (C) In a more lateral section, the innervation is postero-ventral in PPN1 (white arrow). Abbreviations: a: anterior; d: dorsal; p: posterior; PPN1-3: posterior pecten neuropil 1–3; v: ventral.