Orientation of Callosobruchus chinensis (L) Towards Coloured Lights

Abstract

Orientation of Callosobruchus chinensis (L.) towards seven coloured light emitting diodes was observed under three conditions at different time intervals. In multi-choice test, C. chinensis adults were more attracted towards green (13.13 to 13.80%), blue (12.13 to 13.73%) and ultraviolet (13.20 to 14.20%) LEDs which have shorter wavelengths and high frequencies, while white (control) (7.20 to 9.67%) and red (6.13 to 8.40%) LEDs having longer wavelengths and low frequencies showed the least preference.