Study on biological characteristics and proper conditions for laboratory growth of the predator bug, Rhynocoris iracundus, active in Khojir protected area

Document Type : Research Paper

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Abstract

Two pests species, Ocneria terebinthina Stgr. and Thaumetopoea solitaria Frever, are among the most important pests of wild pistachio trees. The predator bug, Rhynocoris iracundus Poda was collected from Khojir protected area while it was feeding on larvae of both mentioned pests. Mature as well as immature stages of this predator of Reduviidae family voraciously feed on the pest larvae. In order to study on biological characteristics of this predator, collected specimens were breeded on larvae of Ephestia kuehniella and hen liver in laboratory. According to this study each female adult lays 50 to 85 eggs as cluster (X±SD=73.3±14.4). Incubation period is 10.3±2.2 days. This insect has 6 nymphal instars which last about 2 months. Longevity of adults is varied and takes 13 to 37 (24.1±10) days. As the insect does not have obligatory diapaus so it is possible to breed that throughout the year in proper condition. The nymphs of this predator have cannibalism and even when enough food is available, they feed on eachother. Some female adults feed on males while mating.
 
 

Keywords

References

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History

  • Receive Date: 29 May 2016
  • Accept Date: 29 May 2016

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