Welcome to Chinese Journal of Biological Control,Today is

Chinese Journal Of Biological Control ›› 2020, Vol. 36 ›› Issue (4): 513-519.DOI: 10.16409/j.cnki.2095-039x.2020.04.013

• BIOLOGICAL CONTROL OF Spodoptera frugiperda • Previous Articles     Next Articles

Predation Capacity of Chrysopa pallens Larvae to Young Larvae of Spodoptera frugiperda

LI Ping, LI Yuyan, XIANG Mei, WANG Mengqing, MAO Jianjun, CHEN Hongyin, ZHANG Lisheng   

  1. USDA-ARS Sino-American Biological Control Laboratory/Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2020-05-27 Online:2020-08-08 Published:2020-08-07

Abstract: The potential of Chrysopa pallens (Rambur) to control Spodoptera frugiperda (J.E.Smith) was evaluated under laboratory conditions in this study, and the predation behavior was also observed. The results indicate that the 2nd and 3rd instar larvae of C. pallens showed active feeding behaviors and strong predatory ability against the 1st and 2nd instar larvae of S. frugiperda. In particular, both the 2nd and 3rd instar larvae of C. pallens had a large predatory capacity to the 1st instar larvae of S. frugiperda, with the average daily predation amount of 78.5 and 89.9, respectively, which corresponds to the maximum daily predation amount of 125 and 167, respectively, under theoretical conditions. All stages of C. pallens showed a type II functional response. The predation capacity, searching ability and controlling efficacy of C. pallens 3rd instar larvae to S. frugiperda young larvae were significantly higher than those of C. pallens 2nd instar larvae, respectively. And, the 3rd instar larvae of C. pallens had much higher attacking rate, but shorter handling time. This study confirms that C. pallens larvae have a strong ability to control the young larvae of S. frugiperda, which has an important practical meaning for the long-term sustainable control of S. frugiperda by the predatory insect lacewings.

Key words: Chrysopa pallens, Spodoptera frugiperda, predatory capacity, functional response, biological control

CLC Number: