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Tetrachromacy in a butterfly that has eight varieties of spectral receptors
This paper presents the first evidence of tetrachromacy among invertebrates. The Japanese yellow swallowtail butterfly, Papilio xuthus, uses colour vision when foraging. The retina of Papilio isExpand
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Central neural coding of sky polarization in insects
Many animals rely on a sun compass for spatial orientation and long-range navigation. In addition to the Sun, insects also exploit the polarization pattern and chromatic gradient of the sky forExpand
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Polarization-sensitive and light-sensitive neurons in two parallel pathways passing through the anterior optic tubercle in the locust brain.
Many migrating animals use a sun compass for long-range navigation. One of the guiding cues used by insects is the polarization pattern of the blue sky. In the desert locust Schistocerca gregaria,Expand
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Associative visual learning, color discrimination, and chromatic adaptation in the harnessed honeybee Apis mellifera L.
We studied associative visual learning in harnessed honeybees trained with monochromatic lights associated with a reward of sucrose solution delivered to the antennae and proboscis, to elicit theExpand
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Depth Perception from Image Defocus in a Jumping Spider
A Good Judge of Distance Jumping spiders actively pursue their prey, often jumping relatively long distances in order to catch them. Such feats require accurate depth perception. Nagata et al. (p.Expand
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Segregation of visual inputs from different regions of the compound eye in two parallel pathways through the anterior optic tubercle of the bumblebee (Bombus ignitus)
Visually guided behaviors require the brain to extract features of the visual world and to integrate them in a context‐specific manner. Hymenopteran insects have been prime models for ethologicalExpand
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Extraordinary diversity of visual opsin genes in dragonflies
Significance Human color vision is tri-chromatic, with three opsins expressed in cone photoreceptors that are sensitive in the red, green, and blue region of the spectrum. As theories predict, suchExpand
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Molecular logic behind the three-way stochastic choices that expand butterfly colour vision
Butterflies rely extensively on colour vision to adapt to the natural world. Most species express a broad range of colour-sensitive Rhodopsin proteins in three types of ommatidia (unit eyes), whichExpand
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Tuning of Photoreceptor Spectral Sensitivities by Red and Yellow Pigments in the Butterfly Papilio xuthus
Abstract The compound eye of the Japanese yellow swallowtail butterfly, Papilio xuthus, consists of different types of ommatidia characterized by the pigmentation around the rhabdom. About 75% of theExpand
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An ultraviolet absorbing pigment causes a narrow-band violet receptor and a single-peaked green receptor in the eye of the butterfly Papilio
The distal photoreceptors in the tiered retina of Papilio exhibit different spectral sensitivities. There are at least two types of short-wavelength sensitive receptors: an ultraviolet receptor withExpand
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