Department of Entomology, Key Laboratory of Monitoring and Management of Plant Diseases and Pests, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
J Insect Sci. 2011;11:45. doi: 10.1673/031.011.0145.
Adults of the yellow-spined bamboo locust, Ceracris kiangsu Tsai (Orthoptera: Oedipodidae), aggregate and gnaw at human urine-contaminated materials, a phenomenon termed puddling. Several urine-borne chemicals, including NaCl, are known to stimulate adult C. kiangsu to consume filter paper. Because in nature C. kiangsu adults may use cues to locate puddling resources, we tested the influence of conspecific decoys (dried C. kiangsu) on foraging and consumption of 3% NaCl-treated filter paper. In a two-choice test experiment in the laboratory, female adults showed no preference for filter papers (not treated with NaCl) with or without decoys. In contrast, C. kiangsu females consumed significantly more NaCl-treated filter paper on which conspecific decoys were attached than those without decoys in both the laboratory and in a bamboo forest. When the bait was changed to 3% NaCl plus the insecticide bisultap, significantly more C. kiangsu were killed in the bamboo forest when decoys were present, however the results were not significant when the experiment was done in the laboratory. Hence, moving towards conspecifics seems to facilitate NaCl resource foraging in C. kiangsu, suggesting that the presence of conspecifics promotes feeding on puddling resources.
黄脊竹蝗成虫（直翅目：斑腿蝗科）聚集并啃咬被人类尿液污染的材料，这种现象称为泡尿。已知有几种尿液中的化学物质，包括 NaCl，会刺激黄脊竹蝗成虫取食滤纸。因为在自然界中，黄脊竹蝗成虫可能会利用线索来寻找泡尿资源，所以我们测试了同种诱饵（干燥的黄脊竹蝗）对取食和消耗 3%NaCl 处理滤纸的影响。在实验室中的双选择测试实验中，雌性成虫对有或没有诱饵的未处理（未用 NaCl 处理）滤纸没有表现出偏好。相比之下，在实验室和竹林中，当同种诱饵附着在处理过的 NaCl 滤纸上时，黄脊竹蝗雌成虫明显消耗了更多的处理过的 NaCl 滤纸上的滤纸，而没有诱饵的则消耗得更少。当诱饵变为 3%NaCl 加上杀虫剂双硫磷时，当有诱饵存在时，竹林中有更多的黄脊竹蝗死亡，但在实验室中进行实验时，结果并不显著。因此，向同种个体移动似乎有助于黄脊竹蝗寻找 NaCl 资源，这表明同种个体的存在促进了对泡尿资源的取食。
