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.3

Emergence and landing positions of Dendroctonus valens in Heilihe
Author of the article:LIU Yi-Zhou;GAO Bing-Tao;ZHANG Shao-Peng;REN Li-Li;LUO You-Qing
Author's Workplace:Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing 100083, China; Emergency Management Bureau of Ningcheng County, Ningcheng 024200, China
Key Words:Dendroctonus valens; behavior; pest management
Abstract:
[Objectives]  To improve the prevention and control of Dendroctonus valens by determining the emergence and landing positions this pest. [Methods]  In Heilihe National Natural Reserve, Inner Mongolia Autonomous Region, China, a ground and stem eclector trap was used to count the emergence positions of D. valens. The landing position of attracted insects was also counted during the emergence period. [Results]  Most D. valens overwinter at the root level where adults bite the root bark and burrow upward through the soil to ground level after overwintering. There were very significant differences in the proportion of D. valens that emerged at different distances from infested pines (P<0.001). Most, 79.90%±16.99%, emerged from an area within a 0-50 cm radius of infested pines with the remainder 17.77%±14.12% emerging within a 50-100 cm radius. Few adults emerged from the trunk. The proportion that landed at different heights on the trunk was also significantly different (P<0.001). Most 41.09%±4.25%landed at a height of 0-50 cm from the ground, with a smaller proportion 27.47%±4.31% landing at a height of 50-100 cm. Relatively few landed at heights of 100-150 cm within a radius of 0-150 cm of a pine tree. [Conclusion]  In Heilihe National Natural Reserve, D. valens mostly damages pine roots, and usually emerges within a 0-50 cm radius of pine trees. Therefore, covering the ground within 0-50 cm of pine trees with plastic sheeting should improve the control of this pest with fumigation. If possible, the ground should be covered to a distance of 100 cm from each trunk. D. valens generally lands on pine trunks at a height of 0-50 cm from the ground, so traps should be hung as low as possible.
CopyRight©2024 Chinese Journal of Aplied Entomology