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Keywords: Opsin
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Journal Articles
J Exp Biol (2022) 225 (7): jeb243907.
Published: 8 April 2022
... investigating vision and navigation. However, little is known about the molecular and anatomical basis of their visual system. We addressed this knowledge gap here and behaviourally tested achromatic and chromatic acuity. In terms of visual opsins, R. aculeatus possessed one rod opsin gene ( RH1 ) and at least...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (3): jeb243256.
Published: 10 February 2022
...- and UV-sensitive photoreceptors in larvae of the Caribbean stomatopod species Neogonodactylus oerstedii . Transcriptomes of individual larvae were used to identify the expression of three distinct UV opsin mRNA transcripts, which may indicate the presence of multiple UV spectral channels...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (14): jeb240580.
Published: 14 July 2021
...Doron G. Hickey; Wayne I. L. Davies; Steven Hughes; Jessica Rodgers; Navamayooran Thavanesan; Robert E. MacLaren; Mark W. Hankins ABSTRACT Human opsin-based photopigments have great potential as light-sensitisers, but their requirement for phototransduction cascade-specific second messenger...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (23): jeb230979.
Published: 2 December 2020
.... We also found a ∼25 nm diurnal shift in spectral sensitivity towards longer wavelengths in the evening in both ERG and intracellular recordings. Whether the shift is caused by screening pigment migration or changes in opsin expression remains unclear, but the observation shows the diel dynamism...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (11): jeb215368.
Published: 29 May 2020
.... pumilio 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...
Journal Articles
J Exp Biol (2019) 222 (24): jeb209916.
Published: 20 December 2019
.... brevirostris changes primarily during the transition from the larval to the juvenile stage, with only minor modifications thereafter. Similarly, visual gene (opsin) expression based on RNA sequencing, although qualitatively similar between stages (all fish mainly expressed the same three cone opsins; SWS2B...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (14): jeb208595.
Published: 23 July 2019
...://www.biologists.com/user-licence-1-1/ Highlighted Article: Terrestrial slugs of the genus Limax exhibit negative phototaxis behaviour even if their eyes are removed, possibly by using their brain as a photosensor, which expresses several opsin mRNA species. Extraocular photoreception Opsin...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (21): jeb189340.
Published: 1 November 2018
... by initial transient hyperpolarization followed by prolonged delayed depolarization. To explore the basis for these findings, we used RNA interference to selectively suppress expression of the genes encoding green opsin (GO1), UV opsin (UVO) or both. The hyperpolarizing component in UV-sensitive...
Journal Articles
J Exp Biol (2018) 221 (10): jeb165860.
Published: 22 May 2018
... opsins, respectively ( Henze and Oakley, 2015 ; Kashiyama et al., 2009 ). The sensitivity of the apposition eye is limited by the size of its ommatidia, and neuroanatomical evidence suggests that spatial summation is used to pool signals relayed from multiple ommatidia ( Glantz, 2014 ). Circuitry...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (10): jeb165878.
Published: 22 May 2018
... visual opsins in their compound eyes. We asked whether two branchiopods, Triops longicaudatus and Streptocephalus mackini , use multiple spectral channels to regulate their position in the water column. At the lowest intensities that elicited photonegative behavior, both species had broad spectral...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (1): jeb165191.
Published: 11 January 2018
... composition. However, visual capabilities are restricted by both space limitations set by eye size and by the genomic content of light-absorbing opsin genes. The rich array of visual opsins in teleosts may be used differentially to tune vision towards specific needs during ontogeny and to changing light. Yet...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (18): 2790–2801.
Published: 15 September 2016
... objects or living organisms, or in signals displayed by conspecifics. UV visual pigments are based on opsins, the same family of proteins that are used to detect light in conventional photoreceptors. Despite some interesting exceptions, most animal species have a single photoreceptor class devoted...
Journal Articles
J Exp Biol (2016) 219 (16): 2545–2558.
Published: 15 August 2016
...-PCR) experiments show developmental changes of the dottyback visual system, including the use of a novel adult-specific visual gene ( RH2 opsin). This gene is likely to be co-expressed with other visual pigments to form broad spectral sensitivities that cover the medium-wavelength part of the visible...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (15): 2377–2387.
Published: 1 August 2016
...Kyle J. McCulloch; Daniel Osorio; Adriana D. Briscoe ABSTRACT Most butterfly families expand the number of spectrally distinct photoreceptors in their compound eye by opsin gene duplications together with lateral filter pigments; however, most nymphalid genera have limited diversity, with only...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (10): 1556–1563.
Published: 15 May 2015
... that all show minimal UV reflectance. Here, we determine the cone photoreceptor spectral sensitivities and opsin expression of the two lineages, to test whether they differ, particularly in the UV wavelengths. Using microspectrophotometry on retinal cone photoreceptors, we identified a long-wavelength...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (21): 3883–3890.
Published: 1 November 2014
... the other was used for molecular techniques to isolate and characterize the opsin genes. Collected tissues were dissected from the bird and either placed on ice until use (for spectral measurements) or immersed in either ethanol (muscle tissue) or RNAlater (retinal tissue; Qiagen, Valencia, CA, USA...
Journal Articles
J Exp Biol (2013) 216 (23): 4454–4461.
Published: 1 December 2013
... it an ideal candidate for intraspecific differences in spectral sensitivity. Here, the visual pigments of P. elegans were fully characterised through molecular sequencing of five visual opsin genes and measurement of their absorbance spectra using microspectrophotometry. Three of the genes, LWS , SW1 and SWS2...
Includes: Supplementary data
Journal Articles
J Exp Biol (2013) 216 (10): 1916–1923.
Published: 15 May 2013
... is a part of the PhD thesis of Y.O. COMPETING INTERESTS No competing interests declared. 3 12 2012 30 1 2013 © 2013. Published by The Company of Biologists Ltd 2013 color vision insect ommatidium opsin spectral sensitivity visual pigment The eyes...
Journal Articles
J Exp Biol (2012) 215 (13): 2342–2346.
Published: 1 July 2012
...Morten Moldrup; Anders Garm SUMMARY The dinoflagellate Kryptoperidinium foliaceum possesses one of the largest eyespots among the autotrophic dinoflagellates. Until now they were believed to be negatively phototactic using a non-opsin photopigment. Here we provide evidence that in newly established...
Journal Articles
J Exp Biol (2011) 214 (21): 3524–3531.
Published: 1 November 2011
... a few hundred micrometers behind the lens, and a proximal retina that is situated directly beneath. A recent molecular study on first instar larvae suggests that the distal retina expresses a long-wavelength-sensitive opsin (TmLW), whereas the proximal retina predominantly expresses an ultraviolet...