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  • Ultraviolet visual sensitivity in three avian lineages: paleognaths, parrots, and passerines

    Author(s)
    Aidala, Zachary
    Huynen, Leon
    Brennan, Patricia LR
    Musser, Jacob
    Fidler, Andrew
    Chong, Nicola
    Capuska, Gabriel E Machovsky
    Anderson, Michael G
    Talaba, Amanda
    Lambert, David
    Hauber, Mark E
    Griffith University Author(s)
    Lambert, David M.
    Huynen, Leon
    Year published
    2012
    Metadata
    Show full item record
    Abstract
    Ultraviolet (UV) light-transmitted signals play a major role in avian foraging and communication, subserving functional roles in feeding, mate choice, egg recognition, and nestling discrimination. Sequencing functionally relevant regions of the short wavelength sensitive type 1 (SWS1) opsin gene that is responsible for modulating the extent of SWS1 UV sensitivity in birds allows predictions to be made about the visual system's UV sensitivity in species where direct physiological or behavioral measures would be impractical or unethical. Here, we present SWS1 segment sequence data from representative species of three avian ...
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    Ultraviolet (UV) light-transmitted signals play a major role in avian foraging and communication, subserving functional roles in feeding, mate choice, egg recognition, and nestling discrimination. Sequencing functionally relevant regions of the short wavelength sensitive type 1 (SWS1) opsin gene that is responsible for modulating the extent of SWS1 UV sensitivity in birds allows predictions to be made about the visual system's UV sensitivity in species where direct physiological or behavioral measures would be impractical or unethical. Here, we present SWS1 segment sequence data from representative species of three avian lineages for which visually based cues for foraging and communication have been investigated to varying extents. We also present a preliminary phylogenetic analysis and ancestral character state reconstructions of key spectral tuning sites along the SWS1 opsin based on our sequence data. The results suggest ubiquitous ultraviolet SWS1 sensitivity (UVS) in both paleognaths, including extinct moa (Emeidae), and parrots, including the nocturnal and flightless kakapo (Strigops habroptilus), and in most, but not all, songbird (oscine) lineages, and confirmed violet sensitivity (VS) in two suboscine families. Passerine hosts of avian brood parasites were included both UVS and VS taxa, but sensitivity did not co-vary with egg rejection behaviors. The results should stimulate future research into the functional parallels between the roles of visual signals and the genetic basis of visual sensitivity in birds and other taxa.
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    Journal Title
    Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology
    Volume
    198
    Issue
    7
    DOI
    https://doi.org/10.1007/s00359-012-0724-3
    Subject
    Biological Sciences not elsewhere classified
    Biological Sciences
    Medical and Health Sciences
    Publication URI
    http://hdl.handle.net/10072/52047
    Collection
    • Journal articles

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