isthmo-optic system in a bony fish
This investigation reveals the existence of an isthmo-optic system in a bony fish for the first time. Two cell aggregates of the isthmic region project bilaterally to each eye in Polypterus. The crossed connections are significantly more developed than the uncrossed ones. These findings provide furt...
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| Veröffentlicht in: | Cell and tissue research 1983-01, Vol.231 (1), p.129-133 |
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| container_end_page | 133 |
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| container_issue | 1 |
| container_start_page | 129 |
| container_title | Cell and tissue research |
| container_volume | 231 |
| creator | Meyer, D.L Gerwerzhagen, K Fiebig, E Ahlswede, F Ebbesson, S.O.E |
| description | This investigation reveals the existence of an isthmo-optic system in a bony fish for the first time. Two cell aggregates of the isthmic region project bilaterally to each eye in Polypterus. The crossed connections are significantly more developed than the uncrossed ones. These findings provide further evidence for the presence of bilaterally projecting isthmo-optic systems in early stages of vertebrate evolution. Furthermore, they suggest that a loss of one or all of these connections during evolutionary or ontogenetic development reflects a parcellation process as proposed by the parcellation theory. |
| doi_str_mv | 10.1007/BF00215780 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 0302-766X |
| ispartof | Cell and tissue research, 1983-01, Vol.231 (1), p.129-133 |
| issn | 0302-766X 1432-0878 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_80479053 |
| source | MEDLINE; SpringerLink Journals |
| subjects | animal anatomy animal morphology Animals aquatic organisms Biological Evolution Brain - anatomy & histology Brain - physiology Eye - anatomy & histology Fishes - anatomy & histology Fishes - physiology Retina - ultrastructure Visual Pathways - anatomy & histology |
| title | isthmo-optic system in a bony fish |
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