Oblique color vision in an open-habitat bird: spectral sensitivity, photoreceptor distribution and behavioral implications
Color vision is not uniform across the retina because of differences in photoreceptor density and distribution. Retinal areas with a high density of cone photoreceptors may overlap with those with a high density of ganglion cells, increasing hue discrimination. However, there are some exceptions to...
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ftunivnebraskali:oai:digitalcommons.unl.edu:icwdm_usdanwrc-2168 2023-11-12T04:15:34+01:00 Oblique color vision in an open-habitat bird: spectral sensitivity, photoreceptor distribution and behavioral implications Moore, Bret A. Baumhardt, Patrice Doppler, Megan Randolet, Jacquelyn Blackwell, Bradley F. DeVault, Travis L. Loew, Ellis R. Fernández-Juricic, Esteban 2012-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/icwdm_usdanwrc/1170 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/2168/viewcontent/Moore_JEB_2012_Oblique_color_vision.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/icwdm_usdanwrc/1170 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/2168/viewcontent/Moore_JEB_2012_Oblique_color_vision.pdf USDA Wildlife Services - Staff Publications birds color vision visual ecology text 2012 ftunivnebraskali 2023-10-30T11:02:00Z Color vision is not uniform across the retina because of differences in photoreceptor density and distribution. Retinal areas with a high density of cone photoreceptors may overlap with those with a high density of ganglion cells, increasing hue discrimination. However, there are some exceptions to this cell distribution pattern, particularly in species with horizontal visual streaks (bands of high ganglion cell density across the retina) that live in open habitats. We studied the spectral sensitivity and distribution of cone photoreceptors involved in chromatic and achromatic vision in the Canada goose (Branta canadiensis), which possesses an oblique rather than horizontal visual streak at the ganglion cell layer. Using microspectrophotometry, we found that the Canada goose has a violet-sensitive visual system with four visual pigments with absorbance peaks at 409, 458, 509 and 580 nm. The density of most cones involved in chromatic and achromatic vision peaked along a band across the retina that matched the oblique orientation of the visual streak. With the information on visual sensitivity, we calculated chromatic and achromatic contrasts of different goose plumage regions. The regions with the highest visual saliency (cheek, crown, neck and upper tail coverts) were the ones involved in visual displays to maintain flock cohesion. The Canada goose oblique visual streak is the retinal center for chromatic and achromatic vision, allowing individuals to sample the sky and the ground simultaneously or the horizon depending on head position. Overall, our results show that the Canada goose visual system has features that make it rather different from that of other vertebrates living in open habitats. Text Canada Goose University of Nebraska-Lincoln: DigitalCommons@UNL Canada |
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Open Polar |
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University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
topic |
birds color vision visual ecology |
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birds color vision visual ecology Moore, Bret A. Baumhardt, Patrice Doppler, Megan Randolet, Jacquelyn Blackwell, Bradley F. DeVault, Travis L. Loew, Ellis R. Fernández-Juricic, Esteban Oblique color vision in an open-habitat bird: spectral sensitivity, photoreceptor distribution and behavioral implications |
topic_facet |
birds color vision visual ecology |
description |
Color vision is not uniform across the retina because of differences in photoreceptor density and distribution. Retinal areas with a high density of cone photoreceptors may overlap with those with a high density of ganglion cells, increasing hue discrimination. However, there are some exceptions to this cell distribution pattern, particularly in species with horizontal visual streaks (bands of high ganglion cell density across the retina) that live in open habitats. We studied the spectral sensitivity and distribution of cone photoreceptors involved in chromatic and achromatic vision in the Canada goose (Branta canadiensis), which possesses an oblique rather than horizontal visual streak at the ganglion cell layer. Using microspectrophotometry, we found that the Canada goose has a violet-sensitive visual system with four visual pigments with absorbance peaks at 409, 458, 509 and 580 nm. The density of most cones involved in chromatic and achromatic vision peaked along a band across the retina that matched the oblique orientation of the visual streak. With the information on visual sensitivity, we calculated chromatic and achromatic contrasts of different goose plumage regions. The regions with the highest visual saliency (cheek, crown, neck and upper tail coverts) were the ones involved in visual displays to maintain flock cohesion. The Canada goose oblique visual streak is the retinal center for chromatic and achromatic vision, allowing individuals to sample the sky and the ground simultaneously or the horizon depending on head position. Overall, our results show that the Canada goose visual system has features that make it rather different from that of other vertebrates living in open habitats. |
format |
Text |
author |
Moore, Bret A. Baumhardt, Patrice Doppler, Megan Randolet, Jacquelyn Blackwell, Bradley F. DeVault, Travis L. Loew, Ellis R. Fernández-Juricic, Esteban |
author_facet |
Moore, Bret A. Baumhardt, Patrice Doppler, Megan Randolet, Jacquelyn Blackwell, Bradley F. DeVault, Travis L. Loew, Ellis R. Fernández-Juricic, Esteban |
author_sort |
Moore, Bret A. |
title |
Oblique color vision in an open-habitat bird: spectral sensitivity, photoreceptor distribution and behavioral implications |
title_short |
Oblique color vision in an open-habitat bird: spectral sensitivity, photoreceptor distribution and behavioral implications |
title_full |
Oblique color vision in an open-habitat bird: spectral sensitivity, photoreceptor distribution and behavioral implications |
title_fullStr |
Oblique color vision in an open-habitat bird: spectral sensitivity, photoreceptor distribution and behavioral implications |
title_full_unstemmed |
Oblique color vision in an open-habitat bird: spectral sensitivity, photoreceptor distribution and behavioral implications |
title_sort |
oblique color vision in an open-habitat bird: spectral sensitivity, photoreceptor distribution and behavioral implications |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2012 |
url |
https://digitalcommons.unl.edu/icwdm_usdanwrc/1170 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/2168/viewcontent/Moore_JEB_2012_Oblique_color_vision.pdf |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Canada Goose |
genre_facet |
Canada Goose |
op_source |
USDA Wildlife Services - Staff Publications |
op_relation |
https://digitalcommons.unl.edu/icwdm_usdanwrc/1170 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/2168/viewcontent/Moore_JEB_2012_Oblique_color_vision.pdf |
_version_ |
1782332831040536576 |