安徽大别台区虫生真菌区系的物种多样性研究

对安徽大别山区虫生真菌区系的物种多样性进行了研究。结果表明该地区虫生真菌资源十分丰富 ,共有虫生真菌 5 0种 ,隶属于 4目 4科 16属。科从大到小依次为麦角菌科 (Clavicipitaceae) (2 7种 ,占 5 4 % )、丝孢科 (Hy phomycetaceae) (15种 ,占 30 % )、虫霉科 (Entomophthoraceae) (5种 ,占 10 % )、束梗孢科 (Stilbellaceae) (3种 ,占 6 % )。含 3个种以上的优势属依次为虫草属 (Cordyceps) (2 6种 ,占 5 2 % )、拟青霉属 (Paecilomyces) (6种 ,占 12 % )、白僵菌属 (Beauveria) (3种 ,占 6 % ) ,共计 35种 ,占总种数的 70 % ;含 2个种的属为刺束梗孢属 (Akanthomyces)和虫瘟霉属 (Zoophthora) ;其余 11个属皆为单种属。优势种依次为粉拟青霉 (Paecilomycesfarinosus)、细脚拟青霉 (P .tenuipes)、下垂虫草 (Cordycepsnutans)、球孢白僵菌 (Beauveriabassiana)、金龟子绿僵菌小孢变种 (Metarhiziumanisopliaevar.anisopliae)。区系地理成分划分为 7大类型 :世界分布种 (42 .11% )、欧亚大陆分布种 (10 .5 3% )、亚热带—热带分布种 (5 .2 6 % )、东亚分布种 (7.89% )、东亚—新几内亚分布种 (5 .2 6 % )、中国—日本分布种 (5 .2 6 % )和特有成分 (2 3.6 8% ) ,表现出明显的东亚区系特征 ,而且本区及

Species diversity of entomogenous fungal flora of Mountains Dabie, Anhui

Based on study of species diversity, 50 species of entomogenous fungi belonging to 16 genera, 4 families and 4 orders were recorded in Dabie Mountains in western Anhui. At the family level, Clavicipitaceae, comprising 27 species, had the highest percentage, with 54% of the total species, while the family Hyphomycetaceae, comprising 15 species, accounted for 30%. The family Entomophthoraceae comprised 5 species (10%), and the smallest percentage was taken by the family Stilbellaceae, comprising 3 species (6%). Considering genera, the dominant genera were Cordyceps (27 species, 52% of the total), Paecilomyces (6 species, 12%), and Beauveria (3 species, 6%). These three genera covered 35 species, accounting for 70% of the total, while they amounted to 18.75% of the total genera. Akanthomyces and Zoophthora were oligotypic genera, both with two species. The rest were monotypic genera, comprising 68.75% of the total genera and 22% of the total species. The dominant species were Paecilomyces farinosus, P. tenuipes, C. nutans, B. bassiana, and Metarhizium anisopliae var. anisopliae. Therefore, the dominant genera and species were evident in this area. By categorization of modern distribution centers in terms of the present distribution patterns of taxa, species were grouped into Cosmopolitan (42.11%), Eurasian (10.53%), Subtropical to Tropical (5.26%), East Asian (7.89%), East Asian Papuan (5.26%), Sino Japanese (5.26%), and Endemic (23.68%). Overall, East Asian elements were characteristic of this region and local and Chinese endemic species were evident.