Contrary responses of musca domestica concerning their selection of different shades and hues
1968
HECHT, OTTO | MUNIZ, RAÜL | Nava, Andrea
The results of experiments in the open air with houseflies settling on surfaces (cardboards) of light and dark shades and of various colours differed from those in laboratory tests. Whereas black is preferred to gray and to white and to all hues in the indoor tests, the white cardboards we used attracted in most cases a preponderant majority of flies in the open air but not so when placed versus yellow. It is assumed that the attraction of the white cardboard is due to the reflection of the “near ultraviolet” of sunlight. Ultraviolet reflection of a more moderate degree by gray, blue and yellow cardboards could be only one of various factors which cooperate in rendering the respective colour attractive in the open air. Red was quite frequently preferred both in indoor and outdoor tests. Blue was the least frequented colour in indoor and brown in outdoor tests.
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