Welcome to Chinese Journal of Biological Control,Today is

Chinese Journal of Biological Control ›› 2022, Vol. 38 ›› Issue (1): 159-165.DOI: 10.16409/j.cnki.2095-039x.2022.01.007

• RESEARCH REPORTS • Previous Articles     Next Articles

A Note of Degeneration of Arma chinensis (Heteroptera: Pentatomidae) during the Rearing Process

ZHU Yanjuan1,2, YIN Yanfang1, WANG Zhen1, CHEN Hongyin1, LIU Chenxi1   

  1. 1. Institute of Plant Protection, Chinese Academy of Agricultural Science, Beijing 100193, China;
    2. Zhangbei County Natural Resources and Planning Bureau, Zhangbei 076450, China
  • Received:2020-08-04 Online:2022-02-08 Published:2022-03-01

Abstract: An problem confronted in the mass production of natural enemies of insect pests is their quality degradation. In recent years, mass rearing of Arma chinensis for biological control has caught wide public attention in China. However, with generational successive mass rearing of the predatory bugs in insectary, such phenomena as drop in vigor and fertility, extension of development period, decline of hatching rate, and unsynchronized development has often occurred, which and has caused serious influence on the application of the predatory bugs. Quality degradation of A. chinensis was investigated by observing the bionomics in laboratory from the wild type A. chinensis adults collected from the fields. The results showed that, compared with F1 generation, F6 generation A. chinensis showed prolonged egg hatching duration (by 71.5%), decreased egg hatching rate (by 22.6%), extended development period (by 30.3%), decreased female to male sex ratio (by 18.2%), reduced weight and length of female adults (by 17.9% and 8.4%, respectively), decreased weight and length of male adults (by 19.4% and 3.2%, respectively), and reduced fecundity (by 32.8%). These parameters degraded significantly since the F3 generation. The results show that A. chinensis population degrades apparently since the third generation from the start of mass rearing, and rejuvenation of the insectary population by cross with wild populations is recommended during mass production.

Key words: Arma chinensis, natural enemies, mass production, quality degradation

CLC Number: