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Light conditions and the evolution of the visual system in birds.

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Title: Light conditions and the evolution of the visual system in birds.
Authors: Fröhlich, Arkadiusz1,2 (AUTHOR) arkfrohlich@gmail.com, Ducatez, Simon3 (AUTHOR), Neˇmec, Pavel4 (AUTHOR), Sol, Daniel5,6 (AUTHOR)
Source: Evolution. Jul2024, Vol. 78 Issue 7, p1237-1247. 11p.
Subjects: Process capability, Visual acuity, Sense organs, Focal length, Vision, Avian anatomy
Abstract: Despite vision being an essential sense for many animals, the intuitively appealing notion that the visual system has been shaped by environmental light conditions is backed by insufficient evidence. Based on a comprehensive phylogenetic comparative analysis of birds, we investigate if exposure to different light conditions might have triggered evolutionary divergence in the visual system through pressures on light sensitivity, visual acuity, and neural processing capacity. Our analyses suggest that birds that have adopted nocturnal habits evolved eyes with larger corneal diameters and, to a lesser extent, longer axial length than diurnal species. However, we found no evidence that sensing and processing organs were selected together, as observed in diurnal birds. Rather than enlarging the processing centers, we found a tendency among nocturnal species to either reduce or maintain the size of the two main brain centers involved in vision—the optic tectum and the wulst. These results suggest a mosaic pattern of evolution, wherein optimization of the eye optics for efficient light capture in nocturnal species may have compromised visual acuity and central processing capacity. [ABSTRACT FROM AUTHOR]
Copyright of Evolution is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 178338115
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PubType: Academic Journal
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  Data: Light conditions and the evolution of the visual system in birds.
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  Data: <searchLink fieldCode="JN" term="%22Evolution%22">Evolution</searchLink>. Jul2024, Vol. 78 Issue 7, p1237-1247. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Process+capability%22">Process capability</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+acuity%22">Visual acuity</searchLink><br /><searchLink fieldCode="DE" term="%22Sense+organs%22">Sense organs</searchLink><br /><searchLink fieldCode="DE" term="%22Focal+length%22">Focal length</searchLink><br /><searchLink fieldCode="DE" term="%22Vision%22">Vision</searchLink><br /><searchLink fieldCode="DE" term="%22Avian+anatomy%22">Avian anatomy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Despite vision being an essential sense for many animals, the intuitively appealing notion that the visual system has been shaped by environmental light conditions is backed by insufficient evidence. Based on a comprehensive phylogenetic comparative analysis of birds, we investigate if exposure to different light conditions might have triggered evolutionary divergence in the visual system through pressures on light sensitivity, visual acuity, and neural processing capacity. Our analyses suggest that birds that have adopted nocturnal habits evolved eyes with larger corneal diameters and, to a lesser extent, longer axial length than diurnal species. However, we found no evidence that sensing and processing organs were selected together, as observed in diurnal birds. Rather than enlarging the processing centers, we found a tendency among nocturnal species to either reduce or maintain the size of the two main brain centers involved in vision—the optic tectum and the wulst. These results suggest a mosaic pattern of evolution, wherein optimization of the eye optics for efficient light capture in nocturnal species may have compromised visual acuity and central processing capacity. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Evolution is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=178338115
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      – Type: doi
        Value: 10.1093/evolut/qpae054
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 1237
    Subjects:
      – SubjectFull: Process capability
        Type: general
      – SubjectFull: Visual acuity
        Type: general
      – SubjectFull: Sense organs
        Type: general
      – SubjectFull: Focal length
        Type: general
      – SubjectFull: Vision
        Type: general
      – SubjectFull: Avian anatomy
        Type: general
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      – TitleFull: Light conditions and the evolution of the visual system in birds.
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            – D: 01
              M: 07
              Text: Jul2024
              Type: published
              Y: 2024
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