Community structure and diversity of insects in vineyards in Xinjiang’s Hami area
Author of the article:LI Kai-Liang1** FANG Lu-Chao1 GE Zhi-Qiang1 ZHANG Zhen-Yu1 GUO Wen-Chao2 HU Hong-Ying1***
Author's Workplace:1. Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830017, China; 2. Xinjiang Key Laboratory of Agricultural Bio-safety, Urumqi 830091, China
Key Words: vineyard; insect community structure; diversity; pest control; natural enemy conservation and utilization
Abstract:
[Aim] To investigate the population dynamics of insect pests and their natural
enemies in vineyards in Hami, Xinjiang to improve the forecasting and control
of major insect pests in this region. [Methods] Insect specimens were captured using net
sweeping and Malaise trapping and their community structure and diversity was
statistically analyzed using diversity indices. [Results] A total of 18 736 insect samples were
collected, belonging to 9 orders and 64 families. The Hymenoptera (31.25%),
Diptera (25.00%), Coleoptera (15.63%), and Hemiptera (14.06%), were the
dominant insect taxa. The maximum number of insects captured was 3 414 in mid-September. The community diversity index ranged from 1.17 to 2.81, the
community richness index ranged from 17 to 47, and the temporal trend in the
community evenness index was basically consistent with that of the diversity
index, ranging from 0.32 to 0.80. The dominant concentration index ranged from
0.09 to 0.56. The main pests in vineyards were fruit flies (Diptera), aphids,
mirid bugs, leafhoppers (Hemiptera), and thrips (Thysanoptera). During the
initial flowering period (May), aphids and mirid bugs were the primary pests,
whereas aphids and thrips were the dominant pests during the grape berry stage
(early June to mid-August). Fruit flies, mirid bugs, and leafhoppers became the
primary pests during the grape maturation period (late August to late
September). The main natural enemies of insect pests were members of the
Chrysopidae, Aphidiidae, Eulophidae, Mymaridae, Scelionidae and Encyrtidae.
Diversity analysis indicates that insect pests in Hami vineyards have a diverse
range of natural enemies with stable populations. [Conclusion] This study clarifies
insect community structure and stability in Hami vineyards, thereby providing a
better basis for pest control and the protection of natural enemies in the
vineyards of this region.