Abstract: Yellow-spined bamboo locust Ceracris kiangsu (Orthoptera: Oedipodidae) is an important bamboo pest in southern China. To better understand the mechanisms of the urinepuddling behavior of C. kiangsu, this paper examined the behavioral responses of C. kiangsu adults to the human urine fermented for different days. The behavioral responses of C. kiangsu adults to the human urine were significantly affected by the fermentation duration of human urine, and the fermentation could enhance the attractiveness of C. kiangsu adults to human urine. As compared with the human urine fermented for 1, 4, 7, 15, and 60 days, the human urine fermented for 30 days was more preferred by the C. kiangsu adults. The filter paper treated with the human urine fermented for 30 days was consumed significantly larger areas (3494.9±345.4 mm²), visited markedly more amounts (43.7±5.2), and settled notably more time (360.5±39.8 s) by the C. kiangsu adults, and the bait of 30-day-fermented human urine mixed with 18% bisultap could attract and kill C. kiangsu adults 507±139 per day, which was much more than the other urine baits in the field. The results of the baittrapping and feeding record indicated that the urinepuddling behavior only occurred in female C. kiangsu adults.

Key words: rice, endophytic bacteria, rhizosphere bacteria, Yuanyang Terrace.