Effectiveness of suction traps as a means ofmonitoring the population dynamics of alate aphids in Harbin and Suiling, Heilongjiang Province
Author of the article:WANG Shuang** LI Xin-Min LIU Chun-Lai YANG Fan XIA Ji-Xing WANG Ke-Qin LIU Xing-Long SHAO Tian-Yu XU Wei-Jun***
Author's Workplace：Plant Protection Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
Key Words：suction trap, alatae, Aphis glycines, population dynamics
Abstract： [Objectives] To determine the effectiveness of suction traps in the prevention and control of aphids, as a way of monitoring the aerial population dynamics of alate aphids (and Aphis glycines) in Harbin,HeilongjiangProvince,Chinaand as a way of providing early warning of oubreaks of A. glycines. [Methods] Suction trapping in combination with field surveys were used to monitor the aerial population dynamics of alate aphids (and A. glycines) inHarbinfrom 2009 to 2012. [Results] Six thousand to 17 thousand alate aphids were collected from the suction trap each year. Numbers of alate aphids caught peaked by 1-3 fold from the middle of July to the middle of October every year. The peak of alate aphids can last 1 month and there can be weeks when the number of alate aphids reaches 200. The peak number of alate aphids can comprise more than 90% of the yearly total. The peak period of alate aphids was variable in the same location in different years. A. glycines also had a 1-3 fold peak that may last from one to a few weeks. The peak number of A. glycines can be 80% to 90% of the yearly total. In the field A. glycines has only one peak. In 2009、2010 and 2012, the peak occurrence of A. glycines in the field coincided with the peak numbers captured in the suction trap. [Conclusion] Suction traps are a good way to measure A. glycines population dynamics in the field and can provide early warning of a coming A. glycines infestation.