Opsin-based photopigments expressed in the retina of a South American pit viper, Bothrops atrox (Viperidae)

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dc.careerEscuela de Ciencias Biológicases
dc.category.authorprincipalen_US
dc.contributor.authorKatti, Christiana
dc.contributor.correspondingKatti, Christiana
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:31:06Z
dc.date.available2023-11-04T21:31:06Z
dc.date.issued2018-12
dc.dedication.authorTCes
dc.description.abstractAlthough much is known about the visual system of vertebrates in general, studies regarding vision in reptiles, and snakes in particular, are scarce. Reptiles display diverse ocular structures, including different types of retinae such as pure cone, mostly rod, or duplex retinas (containing both rods and cones); however, the same five opsin-based photopigments are found in many of these animals. It is thought that ancestral snakes were nocturnal and/or fossorial, and, as such, they have lost two pigments, but retained three visual opsin classes. These are the RH1 gene (rod opsin or rhodopsin-like-1) expressed in rods and two cone opsins, namely LWS (long-wavelength-sensitive) and SWS1 (short-wavelength-sensitive-1) genes. Until recently, the study of snake photopigments has been largely ignored. However, its importance has become clear within the past few years as studies reconsider Walls’ transmutation theory, which was first proposed in the 1930s. In this study, the visual pigments of Bothrops atrox (the common lancehead), a South American pit viper, were examined. Specifically, full-length RH1 and LWS opsin gene sequences were cloned, as well as most of the SWS1 opsin gene. These sequences were subsequently used for phylogenetic analysis and to predict the wavelength of maximum absorbance (λmax) for each photopigment. This is the first report to support the potential for rudimentary color vision in a South American viper, specifically a species that is regarded as being nocturnal.en_US
dc.facultyCiencias Exactas y Naturaleses
dc.id.author1757228885
dc.id.type1
dc.identifier.doihttps://doi.org/10.1017/S0952523818000056
dc.identifier.issn0952-5238
dc.identifier.issn1469-8714
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/4757
dc.identifier.urihttps://www.cambridge.org/core/journals/visual-neuroscience/article/opsinbased-photopigments-expressed-in-the-retina-of-a-south-american-pit-viper-bothrops-atrox-viperidae/60916284428B0D045D78ACC7CC375D5D
dc.indexed.databaseScimago Journal Rankes
dc.language.isoen
dc.list.authorsKatti, C., Stacey-Solis, M., Coronel, N., & Davies, W.
dc.magazine.pageRangeE027
dc.magazine.titleVisual Neuroscienceen_US
dc.magazine.volumeChapter35
dc.rightsOpenAccessen
dc.statepublisheden_US
dc.subjectÓrganos sensorialeses
dc.subjectRetinaes
dc.subjectSerpienteses
dc.subjectÓrganos sensoriales
dc.subjectRetina
dc.subjectSerpientes
dc.titleOpsin-based photopigments expressed in the retina of a South American pit viper, Bothrops atrox (Viperidae)en_US
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