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dc.contributor.authorde Busserolles Fanny
dc.contributor.authorCortesi Fabio
dc.contributor.authorVidar Helvik Jon
dc.contributor.authorDavies Wayne I L
dc.contributor.authorTemplin Rachel M
dc.contributor.authorSullivan Robert K P
dc.contributor.authorMichell Craig T
dc.contributor.authorMountford Jessica K
dc.contributor.authorCollin Shaun P
dc.contributor.authorIrigoien Xabier
dc.contributor.authorKaartvedt Stein
dc.contributor.authorMarshall Justin
dc.date.accessioned2018-01-29T08:31:37Z
dc.date.available2018-01-29T08:31:37Z
dc.date.issued2017
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/5742
dc.description.abstractMost 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.en
dc.language.isoENen
dc.publisherAmerican Association for the Advancement of Science (AAAS)en
dc.relation.ispartofseriesScience advancesen
dc.relation.urihttp://dx.doi.org/10.1126/sciadv.aao4709en
dc.rightsCC BY-NC http://creativecommons.org/licenses/by-nc/4.0/en
dc.titlePushing the limits of photoreception in twilight conditions : the rod-like cone retina of the deep-sea pearlsidesen
dc.description.versionpublished versionen
dc.contributor.departmentYmpäristö- ja biotieteiden laitos / Toimintaen
uef.solecris.id50682548en
dc.type.publicationinfo:eu-repo/semantics/articleen
dc.rights.accessrights© Authorsen
dc.relation.doi10.1126/sciadv.aao4709en
dc.description.reviewstatuspeerRevieweden
dc.relation.articlenumbereaao4709en
dc.relation.issue11en
dc.relation.volume3en
dc.rights.accesslevelopenAccessen
dc.type.okmA1en
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
uef.solecris.openaccessOpen access -julkaisukanavassa ilmestynyt julkaisu


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