Comparative study of the photopic spectral sensitivity of domestic ducks (Anas platyrhynchos domesticus), turkeys (Meleagris gallopavo gallopavo) and humans
2006
Barber, C.L. | Prescott, N.B. | Jarvis, J.R. | Le Sueur, C. | Perry, G.C. | Wathes, C.M.
1. The photopic spectral sensitivity of domestic ducks and turkeys was determined using an operant psychophysical technique. Spectral sensitivity was determined over a range of specified wavelengths, including UV(A), between 326 < lambda < 694 nm and the results were directly compared with human spectral sensitivity measured under similar experimental conditions. 2. Domestic ducks and turkeys had similar spectral sensitivities to each other, and could perceive UV(A) radiation, although turkeys were more sensitive to UV(A) than ducks. For both species, peak sensitivity was between 544 < lambda < 577 nm, with reduced sensitivity at lambda = 508 and 600 nm. Both ducks and turkeys had a very different and broader range of spectral sensitivity than the human subjects tested. 3. Spectral sensitivity and UV(A) perception in these avian species are discussed in relation to their visual ecology and the mechanisms controlling neural processing of colour information.
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