The spectral sensitivity of cone vision in the diurnal murid, Rhabdomys pumilioCitation formats

  • External authors:
  • Jessica Rodgers
  • Ronald Douglas
  • Anthony A Vulgar

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The spectral sensitivity of cone vision in the diurnal murid, Rhabdomys pumilio. / Allen, Annette; Mouland, Josh; Rodgers, Jessica; Bano Otalora, Beatriz; Douglas, Ronald; Vulgar, Anthony A; Brown, Timothy; Lucas, Robert.

In: The Journal of Experimental Biology, 20.04.2020.

Research output: Contribution to journalArticlepeer-review

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APA

Allen, A., Mouland, J., Rodgers, J., Bano Otalora, B., Douglas, R., Vulgar, A. A., Brown, T., & Lucas, R. (Accepted/In press). The spectral sensitivity of cone vision in the diurnal murid, Rhabdomys pumilio. The Journal of Experimental Biology.

Vancouver

Allen A, Mouland J, Rodgers J, Bano Otalora B, Douglas R, Vulgar AA et al. The spectral sensitivity of cone vision in the diurnal murid, Rhabdomys pumilio. The Journal of Experimental Biology. 2020 Apr 20.

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Bibtex

@article{a55afe333fe1412f9dfd34f824a75c36,
title = "The spectral sensitivity of cone vision in the diurnal murid, Rhabdomys pumilio",
abstract = "An animal{\textquoteright}s temporal niche – the time of day at which it is active – is known to drive a variety of adaptations in the visual system. This includes variations in the topography, spectral sensitivity and density of retinal photoreceptors, and changes in the eye{\textquoteright}s gross anatomy and spectral transmission characteristics. We have characterised visual spectral sensitivity in the murid rodent Rhabdomys pumilio ({\textquoteleft}the four-striped grass mouse{\textquoteright}), which is the same family as (nocturnal) mice and rats, but exhibits a strong diurnal niche. As is common in diurnal species, the Rhabdomys lens acts as a long-pass spectral filter, providing limited transmission of light <400nm. Conversely, we found strong sequence homologies with the Rhabdomys SWS and MWS opsins and those of related nocturnal species (mice and rats) whose SWS opsins are maximally sensitive in the near UV. We continued to assess in vivo spectral sensitivity of cone vision using electroretinography and multi-channel recordings from the visual thalamus. These revealed that responses across the human visible range could be adequately described by those of a single pigment (assumed to be MWS opsin) maximally sensitive ~500nm, but that sensitivity in the near UV required inclusion of a second pigment whose peak sensitivity lay well into the UV range (λmax <400nm, likely ~360nm). We therefore conclude that, despite the UV-filtering effects of the lens, the Rhabdomys retains an SWS pigment with a UV-A λmax. In effect, this somewhat paradoxical combination of long-pass lens and UV-A λmax results in narrow-band sensitivity for SWS cone pathways in the UV-A range.",
author = "Annette Allen and Josh Mouland and Jessica Rodgers and {Bano Otalora}, Beatriz and Ronald Douglas and Vulgar, {Anthony A} and Timothy Brown and Robert Lucas",
year = "2020",
month = apr,
day = "20",
language = "English",
journal = "The Journal of Experimental Biology",
issn = "1477-9145",
publisher = "Company of Biologists Ltd",

}

RIS

TY - JOUR

T1 - The spectral sensitivity of cone vision in the diurnal murid, Rhabdomys pumilio

AU - Allen, Annette

AU - Mouland, Josh

AU - Rodgers, Jessica

AU - Bano Otalora, Beatriz

AU - Douglas, Ronald

AU - Vulgar, Anthony A

AU - Brown, Timothy

AU - Lucas, Robert

PY - 2020/4/20

Y1 - 2020/4/20

N2 - An animal’s temporal niche – the time of day at which it is active – is known to drive a variety of adaptations in the visual system. This includes variations in the topography, spectral sensitivity and density of retinal photoreceptors, and changes in the eye’s gross anatomy and spectral transmission characteristics. We have characterised visual spectral sensitivity in the murid rodent Rhabdomys pumilio (‘the four-striped grass mouse’), which is the same family as (nocturnal) mice and rats, but exhibits a strong diurnal niche. As is common in diurnal species, the Rhabdomys lens acts as a long-pass spectral filter, providing limited transmission of light <400nm. Conversely, we found strong sequence homologies with the Rhabdomys SWS and MWS opsins and those of related nocturnal species (mice and rats) whose SWS opsins are maximally sensitive in the near UV. We continued to assess in vivo spectral sensitivity of cone vision using electroretinography and multi-channel recordings from the visual thalamus. These revealed that responses across the human visible range could be adequately described by those of a single pigment (assumed to be MWS opsin) maximally sensitive ~500nm, but that sensitivity in the near UV required inclusion of a second pigment whose peak sensitivity lay well into the UV range (λmax <400nm, likely ~360nm). We therefore conclude that, despite the UV-filtering effects of the lens, the Rhabdomys retains an SWS pigment with a UV-A λmax. In effect, this somewhat paradoxical combination of long-pass lens and UV-A λmax results in narrow-band sensitivity for SWS cone pathways in the UV-A range.

AB - An animal’s temporal niche – the time of day at which it is active – is known to drive a variety of adaptations in the visual system. This includes variations in the topography, spectral sensitivity and density of retinal photoreceptors, and changes in the eye’s gross anatomy and spectral transmission characteristics. We have characterised visual spectral sensitivity in the murid rodent Rhabdomys pumilio (‘the four-striped grass mouse’), which is the same family as (nocturnal) mice and rats, but exhibits a strong diurnal niche. As is common in diurnal species, the Rhabdomys lens acts as a long-pass spectral filter, providing limited transmission of light <400nm. Conversely, we found strong sequence homologies with the Rhabdomys SWS and MWS opsins and those of related nocturnal species (mice and rats) whose SWS opsins are maximally sensitive in the near UV. We continued to assess in vivo spectral sensitivity of cone vision using electroretinography and multi-channel recordings from the visual thalamus. These revealed that responses across the human visible range could be adequately described by those of a single pigment (assumed to be MWS opsin) maximally sensitive ~500nm, but that sensitivity in the near UV required inclusion of a second pigment whose peak sensitivity lay well into the UV range (λmax <400nm, likely ~360nm). We therefore conclude that, despite the UV-filtering effects of the lens, the Rhabdomys retains an SWS pigment with a UV-A λmax. In effect, this somewhat paradoxical combination of long-pass lens and UV-A λmax results in narrow-band sensitivity for SWS cone pathways in the UV-A range.

M3 - Article

JO - The Journal of Experimental Biology

JF - The Journal of Experimental Biology

SN - 1477-9145

ER -