Document Detail


Unexpectedly low UV-sensitivity in a bird, the budgerigar.
MedLine Citation:
PMID:  25376799     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
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.
Authors:
Johanna Chavez; Almut Kelber; Misha Vorobyev; Olle Lind
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biology letters     Volume:  10     ISSN:  1744-957X     ISO Abbreviation:  Biol. Lett.     Publication Date:  2014 Nov 
Date Detail:
Created Date:  2014-11-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101247722     Medline TA:  Biol Lett     Country:  England    
Other Details:
Languages:  eng     Pagination:  -     Citation Subset:  IM    
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