Sexual dimorphism of short-wavelength photoreceptors in the small white butterfly, Pieris rapae crucivora
Kentaro Arikawa,Motohiro Wakakuwa,Motohiro Wakakuwa,Xudong Qiu,Xudong Qiu,Masumi Kurasawa,Masumi Kurasawa,Doekele G. Stavenga +7 more
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TLDR
The eyes of the female small white butterfly, Pieris rapae crucivora, are furnished with three classes of short-wavelength photoreceptors, with sensitivity peaks in the ultraviolet (UV), violet, and blue (B) wavelength range, which are termed PrUV, PrV, and PrB.Abstract:
The eyes of the female small white butterfly, Pieris rapae crucivora , are furnished with three classes of short-wavelength photoreceptors, with sensitivity peaks in the ultraviolet (UV) (λ max = 360 nm), violet (V) (λ max = 425 nm), and blue (B) (λ max = 453 nm) wavelength range. Analyzing the spectral origin of the photoreceptors, we isolated three novel mRNAs encoding opsins corresponding to short-wavelength-absorbing visual pigments. We localized the opsin mRNAs in the retinal tissue and found that each of the short-wavelength-sensitive photoreceptor classes exclusively expresses one of the opsin mRNAs. We, accordingly, termed the visual pigments PrUV, PrV, and PrB, respectively. The eyes of the male small white butterfly also use three classes of short-wavelength photoreceptors that equally uniquely express PrUV, PrV, and PrB. However, whereas the spectral sensitivities of the male photoreceptors with PrUV and PrB closely correspond to those of the female, the male photoreceptor expressing PrV has a double-peaked blue (dB) spectral sensitivity, strongly deviating from the spectral sensitivity of the female V photoreceptor. The male eyes contain a pigment that distinctly fluoresces under blue-violet as well as UV excitation light. It coexists with the dB photoreceptors and presumably acts as a spectral filter with an absorbance spectrum peaking at 416 nm. The narrow-band spectral sensitivity of the male dB photoreceptors probably evolved to improve the discrimination of the different wing colors of male and female P. rapae crucivora in the short-wavelength region of the spectrum.read more
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A review of the evolution of animal colour vision and visual communication signals
Daniel Osorio,Misha Vorobyev +1 more
TL;DR: The evolutionary relationship between photoreceptor spectral sensitivities of four groups of land animals,birds, butterflies, primates and hymenopteran insects, the colour signals that are relevant to them, and how understanding is informed by models of spectral coding and colour vision are discussed.
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From spectral information to animal colour vision: experiments and concepts
Almut Kelber,Daniel Osorio +1 more
TL;DR: The capabilities of di- and trichromatic vision are compared, and why some animals have more than three spectral types of receptors are asked, and awareness of colour and colour qualia cannot be easily tested in animals.
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Evolution of insect color vision: From spectral sensitivity to visual ecology
TL;DR: Based on an overview of the current information about the spectral sensitivities of insect photoreceptors, covering 221 species in 13 insect orders, the evolution of color vision is discussed and present knowledge gaps and promising future research directions in the field are highlighted.
Journal ArticleDOI
UV photoreceptors and UV-yellow wing pigments in Heliconius butterflies allow a color signal to serve both mimicry and intraspecific communication.
Seth M. Bybee,Furong Yuan,Monica D. Ramstetter,Jorge Llorente-Bousquets,Robert D. Reed,Daniel Osorio,Adriana D. Briscoe +6 more
TL;DR: These results are the best available evidence for the correlated evolution of a color signal and color vision and suggest that predator visual systems are error prone in the context of mimicry.
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Color discrimination in the red range with only one long-wavelength sensitive opsin
TL;DR: It is shown here, through behavioral experiments, that the nymphalid butterfly Heliconius erato, although it expresses short and medium wavelength opsins and only one long wavelength opsin, discriminates colors in the long-wavelength range, whereas another nymphatic, Vanessa atalanta, despite having color vision, is unable to do so.
References
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Adriana D. Briscoe,Lars Chittka +1 more
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The spectral input systems of hymenopteran insects and their receptor-based colour vision.
Dagmar Peitsch,Andrea Fietz,Horst Hertel,John Manuel de Souza,Dora Fix Ventura,Randolf Menzel +5 more
TL;DR: In this article, the spectral sensitivity functions of single photoreceptor cells in 43 different hymenopteran species were measured intracellularly with the fast spectral scan method, and the predicted colour discriminability curves differ in their relative height of best discriminating ability in the UV-blue or bluegreen area of the spectrum, indicating that relatively small differences in the S(λ) functions may have considerable effects on colour discrimINability.
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Simple Exponential Functions Describing the Absorbance Bands of Visual Pigment Spectra
TL;DR: A new template for constructing visual pigment spectra from peak wavelengths is derived and it is shown that the shape of the bands is invariant according to the Mansfield-MacNichol transform.