Predation functional response and life table parameters of Orius sauteri (Hemiptera: Anthocoridae) feeding on Megalurothrips usitatus (Thysanoptera: Thripidae)

  • Pingping Liu Department of Entomology, China Agricultural University, Beijing 100193, China
  • Wantong Jia Department of Entomology, China Agricultural University, Beijing 100193, China
  • Xuan Zheng Department of Entomology, China Agricultural University, Beijing 100193, China
  • Liu Zhang Department of Entomology, China Agricultural University, Beijing 100193, China
  • Rouguiatou Sangbaramou Department of Entomology, China Agricultural University, Beijing 100193, China
  • Shuqian Tan Department of Entomology, China Agricultural University, Beijing 100193, China
  • Yiqing Liu Collaborative Innovation Center of Special Plant Industry, Chongqing University of Arts and Sciences, Chongqing 402160, China
  • Wangpeng Shi Department of Entomology, China Agricultural University; Collaborative Innovation Center of Special Plant Industry, Chongqing University of Arts and Sciences; College of Life Science, International Cooperative Research Center for Cross-border Pest Management in Central Asia
Keywords: bean flower thrips, flower bugs, cowpea, biological control

Abstract

Bean flower thrips, Megalurothrips usitatus (Bagnall) (Thysanoptera: Thripidae), is a serious pest of cowpea in Hainan province, China. In this study, the predation functional response and life table parameters of the minute pirate bug, Orius sauteri (Poppius) (Hemiptera: Anthocoridae), feeding on M. usitatus were measured in the laboratory. The functional response of O. sauteri to increasing M. usitatus density was described by Holling’s disc equation, and the maximum predation rate was 45.3 over 24 h. The intraspecific interference of O. sauteri was significant with increasing O. sauteri density. Orius sauteri was able to complete its life cycle feeding on M. usitatus, with an intrinsic rate of increase (r) of 0.16 and fecundity of 95.4 eggs per female. Female and male minute pirate bugs consumed an average of 304.7 and 104.0 thrips over their lifetimes, respectively. These results show O. sauteri to be a potential biological control agent in the integrated pest management of M. usitatus.

 

Resumen

El trips de las flores de frijól, Megalurothrips usitatus (Bagnall) (Thysanoptera: Thripidae), es una plaga grave del caupí en la provincia de Hainan, China. En este estudio, se midieron en el laboratorio la respuesta funcional de predación y los parámetros de la tabla de vida de la chinche pirata, Orius sauteri (Poppius) (Hemiptera: Anthocoridae), que se alimenta de M. usitatus. La respuesta funcional de O. sauteri al aumento de la densidad de M. usitatus fue descrita por la ecuación de disco de Holling y la tasa máxima de depredación fue de 45.3 para 24 horas. La interferencia intraespecífica de O. sauteri fue significativa con el aumento de la densidad de O. sauteri. Orius sauteri pudo completar su ciclo de vida alimentándose de M. usitatus, con una tasa intrínseca de aumento (r) de 0.16 y una fecundidad de 95.4 huevos por hembra. Las hembras y machos de la chinche pirate consumieron un promedio de 304.7 y 104.0 trips durante su vida, respectivamente. Estos resultados muestran que O. sauteri es un agente potencial de control biológico en el manejo integrado de plagas de M. usitatus.

 

View this article in BioOne

Published
2019-04-27
Section
Research Papers