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journal1 ›› 2017, Vol. 33 ›› Issue (1): 79-84.DOI: 10.16409/j.cnki.2095-039x.2017.01.012

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Community Diversity and Ecological Niche of Entomopathogenic Fungi in a Tea Plantation

CHEN Mingjun1, LIN Yan1, JIANG Tao1, PENG Fan1, LI Zengzhi1,2   

  1. 1. Anhui Province Key Laboratory of Microbial Control, Hefei 230036, China;
    2. College of BioAsia Life Science, Shanghai 200433, China
  • Received:2016-06-13 Online:2017-02-08 Published:2017-01-24

Abstract: The entomopathogenic fungi from an extensively managed tea plantation was investigated for species diversity and niche. In total, 116 samples of fungus-infected insect cadavers were collected, and Isaria cateniannulata, Beauveria bassiana and I. farinosus were found to be the dominant species, accounting for 32.8%, 27.6% and 19.8% of the relative frequency, respectively. In addition, I. cateniannulata had the widest temporal niche breadth among dominant entomopathogenic fungi, while I. farinosus had the narrowest. B. bassiana had the widest trophic niche, while I. farinosus had the narrowest. I. cateniannulata and B. bassiana had the biggest temporal niche overlap of 0.776, while I. farinosus and I. cateniannulata had the biggest trophic niche overlap of 0.785. The results suggest that I. cateniannulata has a longer occurrence period, wider distribution and stronger survival abilities than other species.

Key words: Camellia sinensis, extensively managed, diversity index, niche overlap, niche breadth

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