A double-label study of efferent projections from the Edinger-Westphal nucleus in goldfish and kelp bass.
The Edinger-Westphal nucleus in goldfish was identified by retrograde labeling from the ciliary ganglion. In the same animals a few neurons near this nucleus (perinuclear Edinger-Westphal neurons) were labeled by a different retrograde tracer injected into the cerebellum. No double-labeled cells were found. Similar results were obtained in kelp bass, except that in this species no cerebellar-projecting perinuclear neurons were observed. Cerebellar-projecting Edinger-Westphal neurons have previously been described in some mammals, but not in other vertebrates. Therefore the homology of cerebellar-projecting cells of the Edinger-Westphal region in mammals and teleost fishes is doubtful.
Wathey
J C
JC
Scripps Institution of Oceanography, Department of Neurosciences, University of California, San Diego, La Jolla 92093.
Wullimann
M F
MF
D000818:Animals; D001492:Bass / Q000033:anatomy & histology*; D002531:Cerebellum / Q000166:cytology*; D003530:Cyprinidae / Q000033:anatomy & histology*; D004525:Efferent Pathways / Q000166:cytology; D005456:Fluorescent Dyes; D005726:Ganglia, Parasympathetic / Q000166:cytology*; D006054:Goldfish / Q000033:anatomy & histology*; D006735:Horseradish Peroxidase; D009476:Neurons, Efferent / Q000166:cytology*; D009802:Oculomotor Nerve / Q000166:cytology*; D010473:Perciformes / Q000033:anatomy & histology*; D013266:Stilbamidines
C049774:2-hydroxy-4,4'-diamidinostilbene, methanesulfonate salt; D005456:Fluorescent Dyes; D013266:Stilbamidines; D006735:Horseradish Peroxidase