ON THE CONTROL OF THE RESPONSE TO SHADING IN THE BRANCHIÆ OF CHROMODORIS
Open Access
- 20 July 1919
- journal article
- Published by Rockefeller University Press in The Journal of general physiology
- Vol. 1 (6) , 585-591
- https://doi.org/10.1085/jgp.1.6.585
Abstract
The branchial plumes of Chromodoris respond, by contraction, to a decrease in light intensity. This response is obliterated by high temperatures (above 32°) and by direct sunlight, and is possible only within a limited range of alkalinity of the sea water. A concealing retraction of the whole gill-crown is reflexly determined by the self-contraction of the individual plumes under "optimal" conditions of light, temperature, and alkalinity. This protective response of the branchiæ is superimposed upon their simple system of fundamental activities (protrusion, retraction) apparently concerned with regulating the respiratory exchange of the nudibranch.Keywords
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