Abstract: To understand the effects of different LED light sources on the behavior of Brithys crini (Fabricius), thanatosis, walking, resting, feeding, defecating, watching and other behaviors of larvae, mating and oviposition of adults in 4 different LED light sources (red light: 620-625 nm; green light: 520-523 nm; blue light: 465-467 nm; and white light: 460-465 nm) were observed under the laboratory conditions. The results indicated that: (1) there was significant difference in walking, resting and feeding time budget of larvae in different light (P=0.000 for walking, resting and feeding). The walking budget time in red and white light accounted for 98.06% and 61.16% of the total action time, respectively, the feeding budget time in green light accounted for 83.65%, and the walking and resting budget time in blue light accounted for 91.56%. There was significant difference in frequencies of walking, resting, feeding and watching. The walking frequencies in red and white light are the highest (47.37% and 32.00%, respectively), the feeding frequency in green light is the highest (40.00%), and the walking frequency in blue light is the highest (32.35%). (2) There was no significant difference in the thanatosis frequency of fallen larvae in different light, but there was significant difference in the thanatosis duration, and the duration in red light is longer than that in blue and white light. (3) There was no significant difference in eggs laid per mated or unmated female in different light. (4) From the 1st to 2nd day, when red, green, blue and white light was used in the dark phase, the peaks of mating and oviposition occurred in the dark phase of the 3rd day. When no light was used in the dark phase, however, the peaks occurred in the dark phase of the 1st day. The results suggest that there are different effects of different LED light sources on the behaviors of B. crini.

Key words: Brithys crini, light emitting diode (LED), behavior, mating, oviposition