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Species-dependent variation in the dendritic stratification of apparently homologous retinal ganglion cell mosaics in two neoteleost fishes

Cook, JE; Podugolnikova, TA; Kondrashev, SL; (1999) Species-dependent variation in the dendritic stratification of apparently homologous retinal ganglion cell mosaics in two neoteleost fishes. VISION RES , 39 (16) 2615 - 2631.

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Abstract

Large retinal ganglion cells of the marine neoteleost Bathymaster derjugini were labeled with horseradish peroxidase and studied in flatmounts. Four types formed regular, independent mosaics, of which three (biplexiform, alpha-a, alpha-c) resembled those in several other teleosts. The fourth (alpha-ab) appeared novel in one significant respect. Whereas we originally described similar cells in another neoteleost, Oreochromis spilurus, as monostratified in sublamina b of the inner plexiform layer, these were very clearly bistratified in a and b. Detailed re-analysis of our Oreochromis flatmounts showed that the difference is of one degree only: many Oreochromis cells do send fine dendrites into a. These observations strengthen the evidence that all four mosaics are homologous across a wide range of fishes, and clear away an obstacle to our earlier proposals that the alpha-a, alpha-ab and alpha-c mosaics of fishes, frogs, and perhaps other nonmammalian jawed vertebrates too, may all be homologous. (C) 1999 Elsevier Science Ltd. All rights reserved.

Type: Article
Title: Species-dependent variation in the dendritic stratification of apparently homologous retinal ganglion cell mosaics in two neoteleost fishes
Keywords: fish, neuronal type, evolution, spatial order, receptive field, REGULAR MOSAICS, ON-CENTER, INDEPENDENT MOSAICS, RABBIT RETINA, ORGANIZATION, DIRECTION, GOLDFISH, SYSTEM, MORPHOLOGIES, ARCHITECTURE
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Cell and Developmental Biology
URI: http://discovery.ucl.ac.uk/id/eprint/150597
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