为探究峨眉山大蚯蚓秉前环毛蚓(Pheretima carnosa)肠道可培养细菌多样性,测定采样点土壤基本理化性质,从蚯蚓肠道中分离可培养细菌并进行16S r DNA系统发育分析,探究分离菌株的相似性、多样性、优势度及均匀度,绘制稀释曲线。结果显示...为探究峨眉山大蚯蚓秉前环毛蚓(Pheretima carnosa)肠道可培养细菌多样性,测定采样点土壤基本理化性质,从蚯蚓肠道中分离可培养细菌并进行16S r DNA系统发育分析,探究分离菌株的相似性、多样性、优势度及均匀度,绘制稀释曲线。结果显示:峨眉山大蚯蚓生活在有机质丰富的土壤环境中,其肠道中分离出的56株细菌分布在3门14属,其中芽孢杆菌属(Bacillus)为明显优势菌群;此外,Shannon-Wiener多样性指数(1.73)、Berger-Parker优势度指数(0.536)、Margalef指数(3.23)、Evenness均匀度指数(0.66)均表明峨眉山大蚯蚓肠道可培养细菌多样性丰富,而且稀释曲线表明尚有大量未分离细菌。上述研究为峨眉山大蚯蚓肠道微生物资源的开发利用奠定了基础。展开更多
[Objective]This study aimed to investigate the community structure, species and quantities of flower-visiting insects of seed lotus in main producing ar-eas of Jiangxi, Hunan and Hubei provinces. [Method] Using sample...[Objective]This study aimed to investigate the community structure, species and quantities of flower-visiting insects of seed lotus in main producing ar-eas of Jiangxi, Hunan and Hubei provinces. [Method] Using sample area survey and netting method in the fixed points to investigate species and quantities of Asian sacred lotus, the species diversity of different locations was evaluated by diversity indices （H′）, evenness indices （J） and dominant concentration indices （C）. [Result] Apis mel ifera, Apis cerana cerana, Xylocopa （Koptortosoma） sinensis, Xylocopa （s.str.） valga and Xylocopa （Al oxylocopa） appendiculata, al of which belong to order Hy-menoptera were the main pol inators of lotus. Temperature was the main factor which influenced the foraging behaviors of flower-visiting insects. The daily activities of X. （s.str.） valga and X. （Al oxylocopa） appendiculata were bimodal, and that of A. mel-lifera, A. cerana cerana and X. （s.str.） valga were unimodal. The percentage of wild pol inators in Linxiang of Hunan Province and Xianning of Hubei Province were only 20.59% and 3.90% respectively, and there were six species of flower-visiting insects in Linxiang and three in Xianning. The percentages of wild pol inators in Shicheng of Jiangxi Province and the lotus garden in Huazhong Agricultural University were 55.61% and 90.40% respectively, and the flower-visiting insects belonged to 13 and 12 species respectively. The diversity index （H′） and evenness index （J） were listed here in a decreasing order： Shicheng of Jiangxi ＆gt;lotus garden in Huazhong Agricul-tural University＆gt;Linxiang of Hunan ＆gt;Xianning of Hubei. The sequence of dominant concentration indices （C） was Shicheng of Jiangxi ＆lt;the lotus garden in Huazhong Agricultural University＆lt;Linxiang of Hunan＆lt;Xianning of Hubei. The diversity indices （H′）, evenness indices （J） and dominant concentration indices （C） of each sample location were consistent. [Conclusion] The spec展开更多
文摘为探究峨眉山大蚯蚓秉前环毛蚓(Pheretima carnosa)肠道可培养细菌多样性,测定采样点土壤基本理化性质,从蚯蚓肠道中分离可培养细菌并进行16S r DNA系统发育分析,探究分离菌株的相似性、多样性、优势度及均匀度,绘制稀释曲线。结果显示:峨眉山大蚯蚓生活在有机质丰富的土壤环境中,其肠道中分离出的56株细菌分布在3门14属,其中芽孢杆菌属(Bacillus)为明显优势菌群;此外,Shannon-Wiener多样性指数(1.73)、Berger-Parker优势度指数(0.536)、Margalef指数(3.23)、Evenness均匀度指数(0.66)均表明峨眉山大蚯蚓肠道可培养细菌多样性丰富,而且稀释曲线表明尚有大量未分离细菌。上述研究为峨眉山大蚯蚓肠道微生物资源的开发利用奠定了基础。
基金Supported by Special Fund for National Bee Industrial Technology System(CARS-45KXJ5)Special Fund for Agro-scientific Research in the Public Interest(201203080)~~
文摘[Objective]This study aimed to investigate the community structure, species and quantities of flower-visiting insects of seed lotus in main producing ar-eas of Jiangxi, Hunan and Hubei provinces. [Method] Using sample area survey and netting method in the fixed points to investigate species and quantities of Asian sacred lotus, the species diversity of different locations was evaluated by diversity indices （H′）, evenness indices （J） and dominant concentration indices （C）. [Result] Apis mel ifera, Apis cerana cerana, Xylocopa （Koptortosoma） sinensis, Xylocopa （s.str.） valga and Xylocopa （Al oxylocopa） appendiculata, al of which belong to order Hy-menoptera were the main pol inators of lotus. Temperature was the main factor which influenced the foraging behaviors of flower-visiting insects. The daily activities of X. （s.str.） valga and X. （Al oxylocopa） appendiculata were bimodal, and that of A. mel-lifera, A. cerana cerana and X. （s.str.） valga were unimodal. The percentage of wild pol inators in Linxiang of Hunan Province and Xianning of Hubei Province were only 20.59% and 3.90% respectively, and there were six species of flower-visiting insects in Linxiang and three in Xianning. The percentages of wild pol inators in Shicheng of Jiangxi Province and the lotus garden in Huazhong Agricultural University were 55.61% and 90.40% respectively, and the flower-visiting insects belonged to 13 and 12 species respectively. The diversity index （H′） and evenness index （J） were listed here in a decreasing order： Shicheng of Jiangxi ＆gt;lotus garden in Huazhong Agricul-tural University＆gt;Linxiang of Hunan ＆gt;Xianning of Hubei. The sequence of dominant concentration indices （C） was Shicheng of Jiangxi ＆lt;the lotus garden in Huazhong Agricultural University＆lt;Linxiang of Hunan＆lt;Xianning of Hubei. The diversity indices （H′）, evenness indices （J） and dominant concentration indices （C） of each sample location were consistent. [Conclusion] The spec
