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Diversity and Evolu...
Diversity and Evolution of Frog Visual Opsins : Spectral Tuning and Adaptation to Distinct Light Environments
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- Schott, Ryan K. (author)
- Smithsonian Institution,York University
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- Fujita, Matthew K. (author)
- University of Texas at Arlington
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- Streicher, Jeffrey W. (author)
- Natural History Museum, London
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- Gower, David J. (author)
- Natural History Museum, London
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- Thomas, Kate N. (author)
- University of Texas at Arlington,Natural History Museum, London
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- Loew, Ellis R. (author)
- Cornell University
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- Bamba Kaya, Abraham G. (author)
- Institut de Recherches Agronomiques et Forestières
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- Bittencourt-Silva, Gabriela B. (author)
- Natural History Museum, London
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- Guillherme Becker, C. (author)
- Pennsylvania State University
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- Cisneros-Heredia, Diego (author)
- Universidad San Francisco de Quito, Ecuador
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- Clulow, Simon (author)
- University of Canberra
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- Davila, Mateo (author)
- Universidad San Francisco de Quito, Ecuador
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- Firneno, Thomas J. (author)
- University of Denver
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- Haddad, Célio F.B. (author)
- São Paulo State University
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- Janssenswillen, Sunita (author)
- Vrije Universiteit Brussel (VUB)
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- Labisko, Jim (author)
- Natural History Museum, London,University College London
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- Maddock, Simon T. (author)
- Natural History Museum, London,University of Newcastle upon Tyne
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- Mahony, Michael (author)
- University of Newcastle
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- Martins, Renato A. (author)
- Federal University of São Carlos
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- Michaels, Christopher J. (author)
- No affiliation available (private)
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- Mitchell, Nicola J. (author)
- University of Western Australia, Crawley
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- Portik, Daniel M. (author)
- California Academy of Sciences
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- Prates, Ivan (author)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science
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- Roelants, Kim (author)
- Vrije Universiteit Brussel (VUB)
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- Roelke, Corey (author)
- University of Texas at Arlington
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- Tobi, Elie (author)
- Smithsonian National Zoo and Conservation Biology Institute, Gabon
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- Woolfolk, Maya (author)
- Harvard University,Smithsonian Institution
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- Bell, Rayna C. (author)
- California Academy of Sciences,Smithsonian Institution
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Molecular biology and evolution. - 0737-4038. ; 41:4
- Related links:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Visual systems adapt to different light environments through several avenues including optical changes to the eye and neurological changes in how light signals are processed and interpreted. Spectral sensitivity can evolve via changes to visual pigments housed in the retinal photoreceptors through gene duplication and loss, differential and coexpression, and sequence evolution. Frogs provide an excellent, yet understudied, system for visual evolution research due to their diversity of ecologies (including biphasic aquatic-terrestrial life cycles) that we hypothesize imposed different selective pressures leading to adaptive evolution of the visual system, notably the opsins that encode the protein component of the visual pigments responsible for the first step in visual perception. Here, we analyze the diversity and evolution of visual opsin genes from 93 new eye transcriptomes plus published data for a combined dataset spanning 122 frog species and 34 families. We find that most species express the four visual opsins previously identified in frogs but show evidence for gene loss in two lineages. Further, we present evidence of positive selection in three opsins and shifts in selective pressures associated with differences in habitat and life history, but not activity pattern. We identify substantial novel variation in the visual opsins and, using microspectrophotometry, find highly variable spectral sensitivities, expanding known ranges for all frog visual pigments. Mutations at spectral-tuning sites only partially account for this variation, suggesting that frogs have used tuning pathways that are unique among vertebrates. These results support the hypothesis of adaptive evolution in photoreceptor physiology across the frog tree of life in response to varying environmental and ecological factors and further our growing understanding of vertebrate visual evolution.
Subject headings
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Keyword
- amphibia
- codon-based selection models
- sensory biology
- vision research
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Schott, Ryan K.
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Fujita, Matthew ...
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Streicher, Jeffr ...
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Gower, David J.
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Thomas, Kate N.
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Loew, Ellis R.
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show more...
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Bamba Kaya, Abra ...
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Bittencourt-Silv ...
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Guillherme Becke ...
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Cisneros-Heredia ...
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Clulow, Simon
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Davila, Mateo
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Firneno, Thomas ...
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Haddad, Célio F. ...
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Janssenswillen, ...
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Labisko, Jim
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Maddock, Simon T ...
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Mahony, Michael
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Martins, Renato ...
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Michaels, Christ ...
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Mitchell, Nicola ...
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Portik, Daniel M ...
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Prates, Ivan
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Roelants, Kim
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Roelke, Corey
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Tobi, Elie
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Woolfolk, Maya
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Bell, Rayna C.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Evolutionary Bio ...
- Articles in the publication
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Molecular biolog ...
- By the university
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Lund University