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    Data from: Pushing the limits of photoreception in twilight conditions: the rod-like cone retina of the deep-sea pearlsides

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    Type
    Dataset
    Authors
    Busserolles, Fanny de
    Cortesi, Fabio
    Helvik, Jon Vidar
    Davies, Wayne I. L.
    Templin, Rachel M.
    Sullivan, Robert K. P.
    Michell, Craig T.
    Mountford, Jessica K.
    Collin, Shaun P.
    Irigoien, Xabier
    Kaartvedt, Stein
    Marshall, Justin
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Red Sea Research Center (RSRC)
    Date
    2018
    Permanent link to this record
    http://hdl.handle.net/10754/663922
    
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    Abstract
    Most vertebrates have a duplex retina comprising two photoreceptor types, rods for dim-light (scotopic) vision and cones for bright-light (photopic) and color vision. However, deep-sea fishes are only active in dim-light conditions; hence, most species have lost their cones in favor of a simplex retina composed exclusively of rods. Although the pearlsides, Maurolicus spp., have such a pure rod retina, their behavior is at odds with this simplex visual system. Contrary to other deep-sea fishes, pearlsides are mostly active during dusk and dawn close to the surface, where light levels are intermediate (twilight or mesopic) and require the use of both rod and cone photoreceptors. This study elucidates this paradox by demonstrating that the pearlside retina does not have rod photoreceptors only; instead, it is composed almost exclusively of transmuted cone photoreceptors. These transmuted cells combine the morphological characteristics of a rod photoreceptor with a cone opsin and a cone phototransduction cascade to form a unique photoreceptor type, a rod-like cone, specifically tuned to the light conditions of the pearlsides’ habitat (blue-shifted light at mesopic intensities). Combining properties of both rods and cones into a single cell type, instead of using two photoreceptor types that do not function at their full potential under mesopic conditions, is likely to be the most efficient and economical solution to optimize visual performance. These results challenge the standing paradigm of the function and evolution of the vertebrate duplex retina and emphasize the need for a more comprehensive evaluation of visual systems in general.
    Citation
    De Busserolles, F., Cortesi, F., Helvik, J. V., Davies, W. I. L., Templin, R. M., Sullivan, R. K. P., Michell, C. T., Mountford, J. K., Collin, S. P., Irigoien, X., Kaartvedt, S., & Marshall, J. (2018). Data from: Pushing the limits of photoreception in twilight conditions: the rod-like cone retina of the deep-sea pearlsides (Version 1) [Data set]. Dryad. https://doi.org/10.5061/DRYAD.C7P60
    Publisher
    Dryad
    DOI
    10.5061/dryad.c7p60
    Relations
    Is Supplement To:
    • [Article]
      De Busserolles F, Cortesi F, Helvik JV, Davies WIL, Templin RM, et al. (2017) Pushing the limits of photoreception in twilight conditions: The rod-like cone retina of the deep-sea pearlsides. Science Advances 3: eaao4709. Available: http://dx.doi.org/10.1126/sciadv.aao4709.. DOI: 10.1126/sciadv.aao4709 HANDLE: 10754/626202
    ae974a485f413a2113503eed53cd6c53
    10.5061/dryad.c7p60
    Scopus Count
    Collections
    Biological and Environmental Science and Engineering (BESE) Division; Red Sea Research Center (RSRC); Datasets

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