title: [Research on population dynamics of Lonicera macranthoides aphid and natural enemy in Xiushan and evolution of pesticides].
abstract: OBJECTIVE
  To study the population dynamics of aphid on Lonicera macranthoides and their natural enemy in Xiushan and control method of pesticide so as to provide scientific basis for its integrated pests management (IPM).
  
  
  METHODS
  The field investigation and the field controlling trial were carried out for the research.
  
  
  RESULTS
  Semiaphis heraclei was the dominant species among L. macranthoides aphids. The population dynamics of apterous aphids went through five consecutive stages: initial, fluctuating, rising, peak and declining. The population dynamics of alate aphids was 4-7 days later than that apterous aphid's. Significant positive correlations were found between the population size of spiders and ladybugs which were natural enemies and number of aphids. The result of pesticides against aphids in field trial showed that 25% thiamethoxam WG, 70% imidacloprid WG and 20% acetamiprid WP had well controlling effect.
  
  
  CONCLUSIONS
  Aphids on L. macranthoides could be well controlled while 25% thiamethoxam WG, 70% imidacloprid WG and 20% acetamiprid WP are sprayed during the period of aphid population raising, the early April to the mid May.
authors: Chongqing Academy of Chinese Materia Medica, Chongqing Research Center of Techniques and Engineering for Chinese Materia Medica Fine Variety Breeding and Evaluation, Chongqing 400063, China.
authors: Ying
authors: Y
authors: Zhang
authors: Ye-Kuan
authors: YK
authors: Wu
authors: Yu-Sheng
authors: YS
authors: Liu
authors: Long-Yun
authors: LY
authors: Li
mesh_terms: D000818:Animals; D001042:Aphids / Q000254:growth & development*; D031239:Lonicera; D010571:Pest Control; D010575:Pesticides / Q000494:pharmacology*; D011157:Population Dynamics
chemical_list: D010575:Pesticides