[Primary visual centers in Protopterus dolloi Boulenger].
Modifications of the Nauta's method (Fink-Heimer, Ebbesson-Heimer) were used to study the optic centers and pathways of rotoperus dolloi following unilateral enucleation. After ablation, animals were kept at 25degrees C from 6 to 51 days. We saw optimum degenerescences from 10 to 13 days of postoperatory life. Retinofugal fibers are completely crossed. The projections to necleus preopticus and hypothalamus seem to be bi-lateral. The mean primary optic centers are: the thalamic neuropil which is may be homologous with the Bellonci's neuropil in Amphilbia; the pretectal and tectal neuropils; the neuropil of the basal optic root. Results obtained in Protopterus can be compared with our knowledges in Amphibia.
D000818:Animals; D001766:Blindness; D004027:Diencephalon / Q000166:cytology*; D005399:Fishes / Q000033:anatomy & histology*; D008636:Mesencephalon / Q000166:cytology*; D009410:Nerve Degeneration; D009897:Optic Chiasm; D013477:Superior Colliculi; D013788:Thalamus / Q000166:cytology*; D014795:Visual Pathways
Les centers visuels primaries de Protopterus dolloi Boulenger