Contact: +91-9711224068
Journal of Entomology and Zoology Studies
  • Printed Journal
  • Indexed Journal
  • Refereed Journal
  • Peer Reviewed Journal

ISSN Print: 2349-6800 | ISSN Online: 2320-7078

Journal of Entomology and Zoology Studies

2016, Vol. 4, Issue 4
Demographic Studies for Evaluating the Side Effects of Insecticides Proteus® and Pymetrozine on Variegated Lady beetle Hippodamia variegata (Goeze)

Ali Almasi, Qodratollah Sabahi, Ardavan Mardani

Variegated lady beetle Hippodamia variegata is considered as an important biological control agent. There is a need to use pesticides in combination with biological agents to get a better controlling result in some cases. In this study, various stages of the predator were exposed to the sublethal concentration (LC30) of two insecticides, Proteus® and pymetrozine. Results showed that the duration from adult emergence to the first oviposition (APOP), as well as the total preoviposition period (TPOP) from egg stage to the first oviposition day (TPOP) of the predator was also significantly increased after exposure to sublethal concentrations of both insecticides. The intrinsic rate of increase (r) was 0.195 ± 0.005 and 0.191 ± 0.007 day-1 in pymetrozine and Proteus® treatments, respectively, which are significantly lower than the control (0.225 ± 0.005 day-1). Conclusion, this study revealed that at sublethal concentration, Proteus® could adversely affect the predator at a demographic level.
Pages : 234-242 | 1021 Views | 32 Downloads
How to cite this article:
Ali Almasi, Qodratollah Sabahi, Ardavan Mardani. Demographic Studies for Evaluating the Side Effects of Insecticides Proteus® and Pymetrozine on Variegated Lady beetle Hippodamia variegata (Goeze). J Entomol Zool Stud 2016;4(4):234-242.
Journal of Entomology and Zoology Studies
Please use another browser.