interaction of innate and imposed colour perception: a behavioural approach

Nile tilapia were raised from eggs to 2 months of age under a coloured light regime (violet, blue, green, yellow, and red) and then tested for colour preference in a multiple chamber maze with different colour options. Fish were observed individually during three days at 8, 11, 14, and 17 h, every 2...

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Bibliographic Details
Published inJournal of ethology Vol. 32; no. 3; pp. 179 - 183
Main Authors Luchiari, Ana C, Oliveira, Jessica J
Format Journal Article
LanguageEnglish
Published Tokyo Springer-Verlag 2014
Springer Japan
Subjects
Animal Ecology
Behavioral Sciences
Biomedical and Life Sciences
color
eggs
Evolutionary Biology
fish
Life Sciences
Oreochromis niloticus
photoperiod
pigments
red light
retina
Zoology
Development
Fish
Preference
Vision
Colour
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Summary:Nile tilapia were raised from eggs to 2 months of age under a coloured light regime (violet, blue, green, yellow, and red) and then tested for colour preference in a multiple chamber maze with different colour options. Fish were observed individually during three days at 8, 11, 14, and 17 h, every 2 min for 20 min and the visit frequency in each compartment was analyzed. Young Nile tilapia kept under yellow and red light showed preference for yellow and red, respectively. Fish held under violet, blue, and green light did not show any colour preference or avoidance. These results imply that environmental colour affects colour preference of Nile tilapia, possibly due to light-dependent shift of visual pigments in the retina, indicating that colour preference is not an innate response. This conclusion reinforces the idea that environmental colour modulates fish physiological and behavioural processes.
Bibliography:http://dx.doi.org/10.1007/s10164-014-0407-3
ISSN:0289-0771
1439-5444
DOI:10.1007/s10164-014-0407-3