Document Detail


Rhabdom breakdown in the eye of Cirolana borealis (Crustacea) caused by exposure to daylight.
MedLine Citation:
PMID:  7151137     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of daylight on the compound eye was investigated in the deep-water crustacean isopod Cirolana borealis Lilljeborg. The animals were captured and fixed at night ('dark-exposed', i.e. not exposed to light) and day ('daylight-exposed'), respectively. Changes in light and darkness have an effect on the retinula cells; the ultrastructure of dark-exposed eyes is characterized by well-preserved organelles and cytoplasm. The photoreceptor membranes covering the microvilli are regularly aligned, and the outline of the villi is smooth. Electron-dense pigment granules are evenly distributed in the cytoplasm of the retinula cell outside the rhabdom. Daylight-exposed eyes differ from the dark-exposed eyes in the following aspects: (i) the microvilli are disrupted, (ii) retinula-cell pigment is found in the rhabdom, and (iii) the cytoplasm of retinula cells is vesiculated. These results are interpreted as retinal damage caused by excess exposure to light.
Authors:
H L Nilsson
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cell and tissue research     Volume:  227     ISSN:  0302-766X     ISO Abbreviation:  Cell Tissue Res.     Publication Date:  1982  
Date Detail:
Created Date:  1983-03-11     Completed Date:  1983-03-11     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417625     Medline TA:  Cell Tissue Res     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  633-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Cell Nucleus / ultrastructure
Crustacea / ultrastructure*
Cytoplasmic Granules / ultrastructure
Light*
Microscopy, Electron
Microvilli / ultrastructure
Organoids / ultrastructure
Photoreceptor Cells / radiation effects,  ultrastructure*
Pigments, Biological
Chemical
Reg. No./Substance:
0/Pigments, Biological

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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