Prolactin-thyroxine antagonism and the metamorphosis of visual pigments inRana catesbeiana tadpoles

1 June 1975

journal article
research article
Published by Wiley in Journal of Experimental Zoology

Vol. 192 (3) , 355-362
https://doi.org/10.1002/jez.1401920309

Abstract

The relationship between prolactin-thyroxine antagonism and the metamorphosis of visual pigments in larval amphibians has been investigated using bullfrog (Rana catesbeiana) tadpoles. Although prolactin-thyroxine antagonism is demonstrable by morphological criteria, ovine prolactin does not appear to antagonize thyroxine-induced rhodopsin synthesis. The hypothesis is offered that prolactin-thyroxine antagonism is the result of differential gene activities which are opposite in their physiological effects.

Keywords

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