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Related Experiment Videos

Effects of temperature on predation by the stinkbugs Picromerus bidens and Podisus maculiventris (Heteroptera:

K Mahdian1, I Vantornhout, L Tirry

  • 1Department of Crop Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran.

Bulletin of Entomological Research
|November 10, 2006
PubMed
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Picromerus bidens, a native European predator, shows high voracity against caterpillars like Spodoptera littoralis. This research suggests P. bidens is a promising biological control agent for defoliating pests, despite challenges in mass production.

Area of Science:

  • Entomology
  • Biological Control
  • Pest Management

Background:

  • Growing concerns over environmental risks of non-indigenous biological control agents.
  • Need for native alternatives to invasive predators like Podisus maculiventris (Say).
  • Picromerus bidens (Linnaeus) as a potential native European predator for pest control.

Purpose of the Study:

  • To compare prey consumption and development of P. bidens and P. maculiventris.
  • To evaluate the effect of temperature on the predatory performance of P. bidens.
  • To assess the functional response of P. bidens to pest densities.

Main Methods:

  • Laboratory experiments on prey consumption and development of P. bidens and P. maculiventris nymphs using Spodoptera littoralis caterpillars at 18, 23, and 27°C.

Related Experiment Videos

  • Assessment of the functional response of adult P. bidens to Spodoptera exigua densities on bean plants at different temperatures.
  • Analysis of developmental duration, prey consumption, searching efficiency, and handling time.

    • Main Results:

    • P. bidens exhibited longer development times but greater voracity than P. maculiventris at 18 and 27°C.
    • P. maculiventris showed higher predation rates at 23°C.
    • P. bidens displayed a type II functional response at 18 and 23°C, shifting to type III at 27°C, with temperature affecting handling time but not searching efficiency.

    Conclusions:

    • P. bidens demonstrates high predation rates across a range of temperatures.
    • The species shows potential as a valuable biological control agent for defoliating caterpillars.
    • Overcoming mass production challenges is crucial for the successful implementation of P. bidens in pest management.