Quantitative analysis of insect pests and their natural enemies on commercially grown Lonicera japonica
Author of the article:LI Shao-Hua QU Ai-Jun XU De-Kun WANG Yun-Peng YIN Ping WANG Rong-Cheng PANG Yun-Shun LIU Xia
Author's Workplace：College of Plant Protection, Shandong Agricultural University, Tai’an 271018, China; Plant Protection Station of Linyi City, Linyi 276000, China; College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
Key Words：Lonicera japonica; insect pests and natural enemies; principal component analysis; canonical correlation analysis; temporal patterns
Abstract：
[Objectives] The quantitative characteristics of the major
insect pests and communities of their natural enemies in Lonicera japonica fields in Tai’an city were analyzed using multivariate statistics to provide
information to assist the ecological regulation and environmentally-friendly
control of insect pests and the conservation and utilization of their natural
enemies. [Methods] Insect pests and their natural enemies in L.
japonica fields were investigated in 2017 and 2018 using systematical
sampling and the composition of both communities analyzed with multivariate
statistics. [Results] The dominant insect pests and their natural
enemies in different temporal periods were determined by principal component
analysis. The main insect pests were Semiaphis heraclei, Aphis gossypii, Bemisia tabaci, Heterolocha
jinyinhuaphaga and Arge similes, and their main natural enemies were Propylaea
japonica, Harmonia
axyridis, Ebrechtella tricuspidata, Neoscone doenitzi, Xysticus ephippiafus, plus predatory bugs,
predatory mites and syrphids. Canonical correlation analysis showed that there
were significant (P<0.01) correlations between the dominant insect
pests and their natural enemies. The
correlations of ladybirds, syrphids and lacewings to aphids (especially S.
heraclei), predatory bugs to lepidopteran pests (especially H.
jinyinhuaphaga) and B. tabaci, spiders to phytophagous bugs,
leafhoppers, B. tabaci and lepidopteran pests, predatory mites to
phytophagous bugs, B. tabaci and lepidopteran pests, were high. The temporal patterns of insect
pests and their natural enemies were divided into four temporal periods in both
years using optimal sorting. The occurrence patterns of insect pests and their
natural enemies were different during the different temporal periods, and the
abundance of insect pests and their corresponding natural enemies in different
temporal periods, was analyzed. [Conclusion] The results provide useful information
for controlling insect pests and the conservation of their natural enemies in L.
japonica fields.