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Temporal and spatial patterns of opsin gene expression in zebrafish (Danio rerio)

Published online by Cambridge University Press:  02 June 2009

Judith Robinson
Affiliation:
Department of Molecular and cell Biology, Harvard University, Cambridge
Ellen A. Schmitt
Affiliation:
Department of Molecular and cell Biology, Harvard University, Cambridge
John E. Dowling
Affiliation:
Department of Molecular and cell Biology, Harvard University, Cambridge

Abstract

In zebrafish, the first class of cone photoreceptor to become morphologically distinct is the ultraviolet-sensitive short single cone, at 4 days postfertilization, whereas the last class, the red- and green-sensitive double cone, becomes distinct at 10 days postfertilization. We have examined the time course of visual pigment gene expression in zebrafish using whole-mount in situ hybridization. Within the retina, opsins may be detected as early as 40 h postfertilization with the ultraviolet and rod visual pigments being expressed before the blue- (48 h) and red- (60 h) sensitive pigments. In the pineal, red-sensitive opsin is expressed at 48 h postfertilization. Visual pigment expression provides a useful tool for investigations of early cell fate in zebrafish.

Information

Type
Research Articles
Copyright
Copyright © Cambridge University Press 1995

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