Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditions
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zoologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000100004 |
Resumo: | The Antarctic fish Notothenia coriiceps Richardson, 1844 lives in an environment of daily and annual photic variation and retina cells have to adjust morphologically to environmental luminosity. After seven day dark or seven day light acclimation of two groups of fish, retinas were extracted and processed for light and transmission electron microscopy. In seven day dark adapted, retina pigment epithelium melanin granules were aggregated at the basal region of cells, and macrophages were seen adjacent to the apical microvilli, between the photoreceptors. In seven day light adapted epithelium, melanin granules were inside the apical microvilli of epithelial cells and macrophages were absent. The supranuclear region of cones adapted to seven day light had less electron dense cytoplasm, and an endoplasmic reticulum with broad tubules. The mitochondria in the internal segment of cones adapted to seven day light were larger, and less electron dense. The differences in the morphology of cones and pigment epithelial cells indicate that N. coriiceps has retinal structural adjustments presumably optimizing vision in different light conditions. |
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Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditionsPhotic variationphotoreceptorretinomotor movementsThe Antarctic fish Notothenia coriiceps Richardson, 1844 lives in an environment of daily and annual photic variation and retina cells have to adjust morphologically to environmental luminosity. After seven day dark or seven day light acclimation of two groups of fish, retinas were extracted and processed for light and transmission electron microscopy. In seven day dark adapted, retina pigment epithelium melanin granules were aggregated at the basal region of cells, and macrophages were seen adjacent to the apical microvilli, between the photoreceptors. In seven day light adapted epithelium, melanin granules were inside the apical microvilli of epithelial cells and macrophages were absent. The supranuclear region of cones adapted to seven day light had less electron dense cytoplasm, and an endoplasmic reticulum with broad tubules. The mitochondria in the internal segment of cones adapted to seven day light were larger, and less electron dense. The differences in the morphology of cones and pigment epithelial cells indicate that N. coriiceps has retinal structural adjustments presumably optimizing vision in different light conditions.Sociedade Brasileira de Zoologia2007-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000100004Revista Brasileira de Zoologia v.24 n.1 2007reponame:Revista Brasileira de Zoologia (Online)instname:Sociedade Brasileira de Zoologia (SBZ)instacron:SBZ10.1590/S0101-81752007000100004info:eu-repo/semantics/openAccessDonatti,LucéliaFanta,Editheng2007-04-24T00:00:00Zoai:scielo:S0101-81752007000100004Revistahttp://calvados.c3sl.ufpr.br/ojs2/index.php/zooONGhttps://old.scielo.br/oai/scielo-oai.php||sbz@bio.ufpr.br1806-969X0101-8175opendoar:2007-04-24T00:00Revista Brasileira de Zoologia (Online) - Sociedade Brasileira de Zoologia (SBZ)false |
dc.title.none.fl_str_mv |
Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditions |
title |
Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditions |
spellingShingle |
Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditions Donatti,Lucélia Photic variation photoreceptor retinomotor movements |
title_short |
Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditions |
title_full |
Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditions |
title_fullStr |
Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditions |
title_full_unstemmed |
Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditions |
title_sort |
Fine structure of the retinal pigment epithelium and cones of Antarctic fish Notohenia coriiceps Richardson in light and dark-conditions |
author |
Donatti,Lucélia |
author_facet |
Donatti,Lucélia Fanta,Edith |
author_role |
author |
author2 |
Fanta,Edith |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Donatti,Lucélia Fanta,Edith |
dc.subject.por.fl_str_mv |
Photic variation photoreceptor retinomotor movements |
topic |
Photic variation photoreceptor retinomotor movements |
description |
The Antarctic fish Notothenia coriiceps Richardson, 1844 lives in an environment of daily and annual photic variation and retina cells have to adjust morphologically to environmental luminosity. After seven day dark or seven day light acclimation of two groups of fish, retinas were extracted and processed for light and transmission electron microscopy. In seven day dark adapted, retina pigment epithelium melanin granules were aggregated at the basal region of cells, and macrophages were seen adjacent to the apical microvilli, between the photoreceptors. In seven day light adapted epithelium, melanin granules were inside the apical microvilli of epithelial cells and macrophages were absent. The supranuclear region of cones adapted to seven day light had less electron dense cytoplasm, and an endoplasmic reticulum with broad tubules. The mitochondria in the internal segment of cones adapted to seven day light were larger, and less electron dense. The differences in the morphology of cones and pigment epithelial cells indicate that N. coriiceps has retinal structural adjustments presumably optimizing vision in different light conditions. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000100004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000100004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0101-81752007000100004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zoologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zoologia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zoologia v.24 n.1 2007 reponame:Revista Brasileira de Zoologia (Online) instname:Sociedade Brasileira de Zoologia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zoologia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zoologia (Online) |
collection |
Revista Brasileira de Zoologia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zoologia (Online) - Sociedade Brasileira de Zoologia (SBZ) |
repository.mail.fl_str_mv |
||sbz@bio.ufpr.br |
_version_ |
1754820986202488832 |