Figure 10.

Schematic drawing of the regionalization in decapod crustacean olfactory glomeruli and neurotransmitter complexity of local interneurons (A lateral view, B transverse view of glomeruli at the subcap level). The scheme unites data from the spiny lobster Panulirus argus, various crayfish species and the hermit crab Coenobita clypeatus [compiled after [13,18,19,55,69,70]. The afferent axons of olfactory receptor neurons most likely have multiglomerular terminations in spiny lobsters. Abbreviations: 5HT serotonin, AST A-type allatostatin, DOPA dopamine, GABA gamma amino butyric acid, HE hemiellipsoid body neuropil, OGT olfactory globular tract, PN projection neurons, RF RFamide, SCPb small cardioactive peptide, SP substance P.