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ON THE CONTROL OF THE RESPONSE TO SHADING IN THE BRANCHIÆ OF CHROMODORIS
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-c...
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Formato: | Texto |
Lenguaje: | English |
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The Rockefeller University Press
1919
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2140340/ https://www.ncbi.nlm.nih.gov/pubmed/19871772 |
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author | Crozier, W. J. |
author_facet | Crozier, W. J. |
author_sort | Crozier, W. J. |
collection | PubMed |
description | 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. |
format | Text |
id | pubmed-2140340 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1919 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21403402008-04-23 ON THE CONTROL OF THE RESPONSE TO SHADING IN THE BRANCHIÆ OF CHROMODORIS Crozier, W. J. J Gen Physiol Article 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. The Rockefeller University Press 1919-07-20 /pmc/articles/PMC2140340/ /pubmed/19871772 Text en Copyright © Copyright, 1919, by The Rockefeller Institute for Medical Research This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/). |
spellingShingle | Article Crozier, W. J. ON THE CONTROL OF THE RESPONSE TO SHADING IN THE BRANCHIÆ OF CHROMODORIS |
title | ON THE CONTROL OF THE RESPONSE TO SHADING IN THE BRANCHIÆ OF CHROMODORIS |
title_full | ON THE CONTROL OF THE RESPONSE TO SHADING IN THE BRANCHIÆ OF CHROMODORIS |
title_fullStr | ON THE CONTROL OF THE RESPONSE TO SHADING IN THE BRANCHIÆ OF CHROMODORIS |
title_full_unstemmed | ON THE CONTROL OF THE RESPONSE TO SHADING IN THE BRANCHIÆ OF CHROMODORIS |
title_short | ON THE CONTROL OF THE RESPONSE TO SHADING IN THE BRANCHIÆ OF CHROMODORIS |
title_sort | on the control of the response to shading in the branchiæ of chromodoris |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2140340/ https://www.ncbi.nlm.nih.gov/pubmed/19871772 |
work_keys_str_mv | AT crozierwj onthecontroloftheresponsetoshadinginthebranchiæofchromodoris |