Latest Cover

Online Office

Contact Us

Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
Tel:+86-10-64807137
Fax:+86-10-64807137
Email:entom@ioz.ac.cn
Your Position :Home->Past Journals Catalog->2022年59 No.4

Spatial relationships between Frankliniella intonsa and its natural enemies in four tea gardens
Author of the article:WU Xiao-Meng;XU Yue;ZHANG Lin;SUN Jia-Zhao;ZHOU Xia-Zhi;ZOU Yun-Ding;BI Shou-Dong
Author's Workplace:Frankliniella intonsa; natural enemies; spatial relationship; grey correlation
Key Words:Frankliniella intonsa; natural enemies; spatial relationship; grey correlation
Abstract:
[Objectives]  To make rational use of, and protect, the natural enemies of Frankliniella intonsa and clarify the natural enemies that exist in close proximity to this pest. [Methods]  Using grey correlation, geostatistics and a closeness index, the spatial relationships between F. intonsa and its predatory natural enemies were systematically analyzed in four tea gardens. The three natural enemies with the closest spatial relationship to F. intonsa were comprehensively evaluated. [Results]  According to the closeness index, in a ‘Huangshan large leaf’ tea garden, the three natural enemies with the closest spatial relationship to F. intonsa were Tetragnatha squamata (1.000 0), Clubiona japonicola (0.987 6) and Oxyopes sertatus (0.976 8). In a ‘Agricultural anti-zao’ tea garden, the first three natural enemies with the closest spatial relationship to F. intonsa were T. squamata (1.000 0), O. sertatus (0.976 3) and C. japonicola (0.968 2). In a ‘Pingyangtezao’ tea garden, the first three natural enemies with the closest spatial relationship to F. intonsa were O. sertatus (1.000 0), T. squamata (0.995 5) and C. japonicola (0.992 8). In a ‘Baihaozao’ tea garden, the three natural enemies with the closest spatial relationship to F. intonsa were O. sertatus (1.000 0), T. squamata (0.989 8) and T. maxillosa (0.986 3). The same three natural enemies had the closest spatial relationship to F. intonsa in all four tea gardens, however, their ranking in terms of spatial relationship differed from garden to garden. In terms of the ratio of numbers of individual F. intonsa to specific natural enemies, the species with the closest spatial relationship to F. intonsa in the ‘Huangshan large leaf’ tea garden was T. squamata, and the sixth was T. maxillosa, with ratios of 37.29 and 83.90, respectively. The natural enemy with the closest spatial relationship to F. intonsa  in the ‘Agricultural anti-zao’ tea garden was T. squamata, and the sixth was Erigonidium graminicolum, with ratios of 8.84 and 22.11, respectively. The natural enemy with the closest spatial relationship to F. intonsa in the ‘Pingyangtezao’ tea garden was O. sertatus, and the sixth was E. graminicolum with ratios of 8.24 and 34.68, respectively. The ratio of the first natural enemy is an order of magnitude less than that of the sixth. The first natural enemy with the closest spatial relationship to F. intonsa in the ‘Baihaozao’ tea garden was O. sertatus, and the sixth was C. japonicola, with ratios of 19.67 and 88.50, respectively. [Conclusion]  The factors responsible for a close spatial relationship between F. intonsa and its natural enemies appear to be those that promote an abundance of F. intonsa. These results provide an important scientific basis for the rational protection and utilization of natural enemies of F. intonsa.
CopyRight©2024 Chinese Journal of Aplied Entomology