浙江杭州地区红褐斑腿蝗的食性选择及其取食生态位  

Food selection and food niche of locust Catantops pinguis from Hangzhou,Zhejiang

作　　者：王世贵[1] 马小梅[1] 

机构地区：[1]杭州师范大学,杭州市动物科学与技术重点实验室,杭州310036

出　　处：《植物保护》2009年第4期39-44,共6页Plant Protection

基　　金：浙江省自然科学基金项目(Y304112)

摘　　要：本文利用蝗虫嗉囊成分显微分析技术研究了浙江杭州地区红褐斑腿蝗[Catantops pinguis(Stal)]成虫的取食特性。结果表明,杭州地区的红褐斑腿蝗成虫可取食21种植物,但取食相对集中在三裂叶野葛等少数几种植物,故其取食生态位宽度并不宽(5.41),其中雌体4.33,雄体6.38。两性间可取食植物种类大致相似,取食生态位重叠度高达0.965,而且食性在不同月份变化也不大。这说明由于蝗虫所处环境食物资源丰富,它们具有根据自身发育状况进行自主选择的能力,以达到最优食谱,从而导致食物生态位变窄,但仍保持着利用更广泛食物资源的潜力。Microscopic examination of crop contents was to determine food selection of the locust Catantops pinguis （Stal） （Orthoptera： Catantopidae） collected from Hangzhou in Zhejiang Province. The results showed that the locust mainly fed on a few plants such as Pueraria phaseoloides, although its diets cover over 21 species of plants. Its food niche breadth was narrow （5.41）, with the index as 4. 33 for females and 6. 38 for males. The plants consumed by the two sexes were not significantly different and the food niches of the two sexes overlaps （0. 965）, and no difference was observed among the three summer months. These results indicated that C. pinguis was a generalist herbivore and could actively select optimal diets, depending on its development and the environment.

关 键 词：红褐斑腿蝗 食性选择 生态位 宽度 重叠度 

分 类 号：S433.2[农业科学—农业昆虫与害虫防治]