Photographs of live animals displayed in Figure 2 were taken with a Canon T2i DSLR and a Canon EF 100mm f/2.8L Macro IS USM lens (Canon, Melville, NY). Raw photos were post processed for brightness, contrast, and color balance using Adobe Lightroom 5 photo editing software (Adobe Systems, San Jose, CA). Light photomicroscopy on fixed material was carried out using a Nikon (SMZ25; Minato, Tokyo, Japan) stereomicroscope with the SHR Plan Apo 2Â objective. Images were captured using NIS-Elements software (Nikon). Fresh material was usually photographed on compound microscopes using 20Â objectives with illumination from above both sides of the samples at roughly 457. Images were captured using a Canon T2i DSLR with a microscope ocular adaptor lens. Focal series were captured through the depth of the radiole, and they assembled into a focus-stacked image using Zerene Stacker software (Zerene Systems, Richland, WA).
Bok M.J., Porter M.L., Ten Hove H.A., Smith R, & Nilsson D.E. (2017). Radiolar Eyes of Serpulid Worms (Annelida, Serpulidae): Structures, Function, and Phototransduction. The Biological bulletin, 233(1).
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