XB-IMG-173115
Xenbase Image ID: 173115
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Fig S3: Calculations of enhancement with and without outer segments as a comparison to the
Mie scattering calculations of Ives et al. (1983) for the receptor geometry, refractive indices and
oil droplet absorption spectra of the turtle Trachemys scripta elegans. Solid lines show
enhancement factors including the outer segment and dashed lines show calculations without.
When the outer segment is not present we recover greater enhancement factors that approach
those calculated by Ives et al. (1983). This is due to the waveguiding effect of the outer segment,
which allows it to confine light to its volume even without the presence of the oil droplet. Red
lines – LWS cone. Green lines – MWS cone. Blue lines – SWS cone. Image published in: Wilby D and Roberts NW (2017) © 2017. This image is reproduced with permission of the journal and the copyright holder. This is an open-access article distributed under the terms of the Creative Commons Attribution license Larger Image Printer Friendly View |