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THE SPECTRAL SENSITIVITIES OF THE DORSAL OCELLI OF COCKROACHES AND HONEYBEES : AN ELECTROPHYSIOLOGICAL STUDY
The spectral sensitivities of the dorsal ocelli of cockroaches (Periplaneta americana, Blaberus craniifer) and worker honeybees (Apis mellifera) have been measured by electrophysiological methods. The relative numbers of quanta necessary to produce a constant size electrical response in the ocellus...
Autores principales: | , |
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Formato: | Texto |
Lenguaje: | English |
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The Rockefeller University Press
1958
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2194880/ https://www.ncbi.nlm.nih.gov/pubmed/13563806 |
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author | Goldsmith, Timothy H. Ruck, Philip R. |
author_facet | Goldsmith, Timothy H. Ruck, Philip R. |
author_sort | Goldsmith, Timothy H. |
collection | PubMed |
description | The spectral sensitivities of the dorsal ocelli of cockroaches (Periplaneta americana, Blaberus craniifer) and worker honeybees (Apis mellifera) have been measured by electrophysiological methods. The relative numbers of quanta necessary to produce a constant size electrical response in the ocellus were measured at various wave lengths between 302 and 623 mµ. The wave form of the electrical response (ERG) of the dark-adapted roach ocellus depends on the intensity but not the wave length of the stimulating light. The roach ocellus appears to possess a single photoreceptor type, maximally sensitive about 500 mµ. The ERG's of bee ocelli are qualitatively different in the ultraviolet and visible regions of the spectrum. The bee ocellus has two types of photoreceptor, maximally sensitive at 490 mµ and at about 335 to 340 mµ. The spectral absorption of the ocellar cornea of Blaberus craniifer was measured. There is no significant absorption between 350 and 700 mµ. |
format | Text |
id | pubmed-2194880 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1958 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21948802008-04-23 THE SPECTRAL SENSITIVITIES OF THE DORSAL OCELLI OF COCKROACHES AND HONEYBEES : AN ELECTROPHYSIOLOGICAL STUDY Goldsmith, Timothy H. Ruck, Philip R. J Gen Physiol Article The spectral sensitivities of the dorsal ocelli of cockroaches (Periplaneta americana, Blaberus craniifer) and worker honeybees (Apis mellifera) have been measured by electrophysiological methods. The relative numbers of quanta necessary to produce a constant size electrical response in the ocellus were measured at various wave lengths between 302 and 623 mµ. The wave form of the electrical response (ERG) of the dark-adapted roach ocellus depends on the intensity but not the wave length of the stimulating light. The roach ocellus appears to possess a single photoreceptor type, maximally sensitive about 500 mµ. The ERG's of bee ocelli are qualitatively different in the ultraviolet and visible regions of the spectrum. The bee ocellus has two types of photoreceptor, maximally sensitive at 490 mµ and at about 335 to 340 mµ. The spectral absorption of the ocellar cornea of Blaberus craniifer was measured. There is no significant absorption between 350 and 700 mµ. The Rockefeller University Press 1958-07-20 /pmc/articles/PMC2194880/ /pubmed/13563806 Text en Copyright © Copyright, 1958, 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 Goldsmith, Timothy H. Ruck, Philip R. THE SPECTRAL SENSITIVITIES OF THE DORSAL OCELLI OF COCKROACHES AND HONEYBEES : AN ELECTROPHYSIOLOGICAL STUDY |
title | THE SPECTRAL SENSITIVITIES OF THE DORSAL OCELLI OF COCKROACHES AND HONEYBEES : AN ELECTROPHYSIOLOGICAL STUDY |
title_full | THE SPECTRAL SENSITIVITIES OF THE DORSAL OCELLI OF COCKROACHES AND HONEYBEES : AN ELECTROPHYSIOLOGICAL STUDY |
title_fullStr | THE SPECTRAL SENSITIVITIES OF THE DORSAL OCELLI OF COCKROACHES AND HONEYBEES : AN ELECTROPHYSIOLOGICAL STUDY |
title_full_unstemmed | THE SPECTRAL SENSITIVITIES OF THE DORSAL OCELLI OF COCKROACHES AND HONEYBEES : AN ELECTROPHYSIOLOGICAL STUDY |
title_short | THE SPECTRAL SENSITIVITIES OF THE DORSAL OCELLI OF COCKROACHES AND HONEYBEES : AN ELECTROPHYSIOLOGICAL STUDY |
title_sort | spectral sensitivities of the dorsal ocelli of cockroaches and honeybees : an electrophysiological study |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2194880/ https://www.ncbi.nlm.nih.gov/pubmed/13563806 |
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