Polarized light sensitivity in the stage I zoea of the mud crab Panopeus herbstii

1978 ◽  
Vol 46 (4) ◽  
pp. 327-333 ◽  
Author(s):  
M. Bardolph ◽  
R. H. Stavn
Keyword(s):  
Polarized Light ◽  
Light Sensitivity ◽  
Stage I ◽  
Mud Crab ◽  
Panopeus Herbstii

The tiered retina of Dytiscus : a new type of compound eye

1970 ◽  
Vol 175 (1038) ◽  
pp. 83-94 ◽  
Keyword(s):  
Compound Eye ◽  
Electrical Coupling ◽  
Polarized Light ◽  
Light Sensitivity ◽  
Sectional Area ◽  
Cross Sectional ◽  
Light Passing ◽  
Small Fields ◽  
New Type ◽  
Different Levels

The retina of Dytiscus is tiered, with proximal and distal layers of receptors at different levels. Photoreceptor units of the proximal retina of the eye of Dytiscus have fields of view so wide that light entering by any facet is able to excite a receptor belonging virtually to any ommatidium in the light- or dark-adapted eye. Although the distal rhabdomeres may have small fields of view, the proximal retina is clearly not adapted for perception of form or movement. The sensitivity of proximal retinula units is compatible with the observations that light passing through many facets sums upon them and that their rhabdomeres are relatively large and jointly occupy the whole cross-sectional area of the eye. The lack of polarized light sensitivity of the proximal retinula units can be attributed to electrical coupling between cells with tubules oriented in different directions within each ommatidium.

scholarly journals Polarized light sensitivity in Pieris rapae is dependent on both color and intensity

2020 ◽  
Vol 223 (13) ◽  
pp. jeb220350 ◽  
Author(s):  
Adam J. Blake ◽  
Gina S. Hahn ◽  
Hayley Grey ◽  
Shelby A. Kwok ◽  
Deby McIntosh ◽  
...  
Keyword(s):  
Pieris Rapae ◽  
Polarized Light ◽  
Light Sensitivity
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