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Unexpectedly low UV-sensitivity in a bird, the budgerigar.

Chavez, Johanna LU ; Kelber, Almut LU ; Vorobyev, Misha and Lind, Olle LU (2014) In Biology Letters 10(11).
Abstract
Photoreceptor adaptation ensures appropriate visual responses during changing light conditions and contributes to colour constancy. We used behavioural tests to compare UV-sensitivity of budgerigars after adaptation to UV-rich and UV-poor backgrounds. In the latter case, we found lower UV-sensitivity than expected, which could be the result of photon-shot noise corrupting cone signal robustness or nonlinear background adaptation. We suggest that nonlinear adaptation may be necessary for allowing cones to discriminate UV-rich signals, such as bird plumage colours, against UV-poor natural backgrounds.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Biology Letters
volume
10
issue
11
publisher
Royal Society
external identifiers
  • pmid:25376799
  • wos:000345465900011
  • scopus:84920024734
ISSN
1744-9561
DOI
10.1098/rsbl.2014.0670
language
English
LU publication?
yes
id
03c71dc7-a4e9-4d61-89ed-46418f99b2f2 (old id 4820145)
date added to LUP
2014-12-10 15:05:13
date last changed
2017-04-16 03:19:12
@article{03c71dc7-a4e9-4d61-89ed-46418f99b2f2,
  abstract     = {Photoreceptor adaptation ensures appropriate visual responses during changing light conditions and contributes to colour constancy. We used behavioural tests to compare UV-sensitivity of budgerigars after adaptation to UV-rich and UV-poor backgrounds. In the latter case, we found lower UV-sensitivity than expected, which could be the result of photon-shot noise corrupting cone signal robustness or nonlinear background adaptation. We suggest that nonlinear adaptation may be necessary for allowing cones to discriminate UV-rich signals, such as bird plumage colours, against UV-poor natural backgrounds.},
  articleno    = {20140670},
  author       = {Chavez, Johanna and Kelber, Almut and Vorobyev, Misha and Lind, Olle},
  issn         = {1744-9561},
  language     = {eng},
  number       = {11},
  publisher    = {Royal Society},
  series       = {Biology Letters},
  title        = {Unexpectedly low UV-sensitivity in a bird, the budgerigar.},
  url          = {http://dx.doi.org/10.1098/rsbl.2014.0670},
  volume       = {10},
  year         = {2014},
}