Study On The Behavior And Chemical Mechanisms For "Urine-pudding" Of Yellow-spined Bamboo Locust

The yellow-spined bamboo locust, Ceracris kiangsu (Orthoptera: Oedipodidae) is animportant bamboo pest in south China. The adults of the locust feed on urine in hotsummer. To better understand the chemical mechanisms and the sought mechanism of themud pudding behavior, we measured the behavioral responses of C. kiangsu adults to thedifferent concentrations of sodium chloride and ammonium bicarbonate solution, and thebehavioral responses to the different components of human urine. Determination of thevisual and olfactory search in C. kiangsu’s source work, and to verify whether the waterhas a significant effect on the C. kiangsu chemotactic behavior. The results were asfollows:(1) The results showed that the behavioral responses of C. kiangsu adults towardssodium chloride and ammonium bicarbonate solution were influenced significantly by thesolution concentration. A concentration of0.1%sodium chloride and ammoniumbicarbonate was sufficient to stimulate puddling behavior of C. kiangsu adults, and thevisits to sodium chloride and ammonium bicarbonate solution raised with the increase ofthe concentration. The female adults preferred visiting and feeding on the filter papertreated with the solution of7.5%ammonium bicarbonate and that of1.0%sodium chloride,respectively.(2) Volatile substances in human urine have affected mud-puddling behavior ofyellow-ridge bamboo locust of significantly. The behavioral responses of C. kiangsu adultsto the different components of human urine solution showed: the organic solution seekingtime of C. kiangsu adults is shortest, and the seeking time of inorganic salt solution is thelongest; Compare with the inorganic salt solution and water treatment, the visit of aminoacid solution is most, and the differences in the study were striking. The adults of C.kiangsu preferred visiting and feeding on the filter paper treated with ridges were thesignificant difference.(3) The role of color in yellow ridge bamboo locust in searching of mud source is notbig. The behavioral responses to different colors results showed that: compare with the firstvisiting time, there is no significant differences between the various color treatments. Butin terms of total visits, the visits with white paper significant differences in yellow. That isthe reason urine is yellow, and as the color of urine gets more yellow day by day, so C.kiangsu may have a preference for yellow.(4) Water is one of the main powers of yellow-ridge bamboo locust, but is not bigsignificant role in the process of its searching for mud source. The behavioral responses towater results showed that: C. kiangsu has a clear preference for the wet filter paper.Thefeeding area with a dry filter of C. kiangsu paper significant difference.