琅琊山虫生真菌物种多样性和季节变化  

Species diversity and seasonal change of entomogenous fungi in Langya Mountains Nature Reserve

作　　者：陈名君[1] 黄勃[1] 王蒙 吴仕振 樊美珍[1] 邹运鼎[1] 李增智[1] 

机构地区：[1]安徽农业大学微生物防治安徽省重点实验室,合肥230036 [2]安徽省滁州市琅琊山林场,安徽滁州239001

出　　处：《应用生态学报》2007年第9期2075-2079,共5页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(30300004);安徽省优秀青年科技基金项目(04041043);新世纪优秀人才支持计划资助项目(05-0560).

摘　　要：在皖东琅琊山自然保护区设置的20个样方中共采集672份虫生真菌标本,分属于4科8属20种.优势种依次为球孢白僵菌、粉拟青霉、环链拟青霉、布氏白僵菌和玫烟色拟青霉,其中球孢白僵菌占绝对优势,相对多度高达73.8%.选用物种多度、Shannon-Wiener指数H′和Pielou均匀度E对琅琊山虫生真菌物种多样性和季节分布进行研究发现,虫生真菌数量丰富但物种多样性指数较低;夏季虫生真菌菌株最为丰富,均匀度相对较低,随着气温及降雨量的下降,菌株数量急剧下降,均匀度相对较高;不同季节白僵菌属的数量波动大,但拟青霉属波动较小.672 specimens of entomogenous fungi belonging to 20 species, 8 genera and 4 families were collected from 20 sampling quadrates in the Langya Mountains Nature Reserve of East Anhui. The dominant species were Beauveria bassiana, Paecilomyces farinosus, P. cateinannulatus, B. brongniartii and P. fumosoroseus, and B. bassiana was most dominant, with the relative abundance of 73.8%. The entomogenous fungi in the Reserve were high in amount but low in diversity. The amount of isolates and the abundance of each species were the highest in summer and decreased with decreasing air temperature and rainfall, while the Pielou evenness changed from relatively low to relatively high. Paecilomyces spp. had a less seasonal fluctuation of quantity than Beauveria spp.

关 键 词：琅琊山自然保护区 优势种 多样性指数 球孢白僵菌 拟青霉 

分 类 号：S476.1[农业科学—农业昆虫与害虫防治]