Effect of the Mediterranean flour moth (Anagasta kuehniella)(Lep.: Pyralidae) diets on searching behaviour of Habrobracon hebetor (Hym.: Braconidae)

Document Type : Research Paper

Authors

Department of Plant Protection, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran

Abstract

A high searching rate is one of the most desirable traits of natural enemies. Different tests have been used to evaluate the searching behavior and efficiency of natural enemies, one of the most important tests among them is the functional response. In this study, the functional response of Habrobracon hebetor (Say) was investigated to different densities of 5th instar larvae of Meditteranean flour moth, Anagasta kuehniella (Zeller), fed on different food regimes. According to the obtained results, H. hebetor showed type II functional response on all treatments when mortality was considered just due to the number of parasitized larvae. When the combined number of parasitized and paralyzed larvae were considered, it showed type II on wheat flour + wheat husk and type III functional response on host larvae that used barely flour + wheat husk, corn flour + wheat husk, and wheat husk. The attack rate (a) of H. hebetor to parasitized larvae was 0.0549, 0.0504, 0.0526, and 0.0307 h-1 on wheat flour + wheat husk, barley flour + wheat husk, corn flour + wheat husk, and wheat husk, respectively. Accordingly, the handling time (Th) of H. hebetor was estimated as 5.9391, 5.3351, 5.1311, and 2.5789 hours that indicating H. hebetor spent less time for handling to larvae raised on the wheat husk. The results of this study could be used for the selection of the proper diet for H. hebetor mass rearing in insectariums.

Keywords

References

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Plant Pest Research
Volume 14, Issue 2
September 2024
Pages 35-49

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History

  • Receive Date: 15 May 2024
  • Revise Date: 23 August 2024
  • Accept Date: 28 August 2024

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