Ovicidal, larvicidal and oviposition deterrency effects of essential oil from Thymus vulgaris L. (Lamiaceae) on Callosobruchus maculatus (F.) (Col., Bruchidae)

Subject Areas : entomology and othea arthropods

E.  Dezfouli ¹ (Graduated student, Department of Entomology, Agriculture faculty, Islamic Azad University, Arak branch, Arak, Iran)
S.  Moharramipour ² (Department of Entomology, College of Agriculture, Tarbiat Modarres University, Tehran, Iran)
Sh.  Goldasteh ³ (Entomology Department, Agricultural faculty, Islamic Azad University, Arak, Iran)

Received: 2010-04-28 Accepted : 2010-06-23 Published : 2010-08-23

Keywords:

Abstract :

Extensive uses of synthetic pesticides caused development of resistant strains of insects to     pesticides and also environmental pollution. Therefore, the use of essential oils extracted from plants as pest control agents of stored product insects has been received much attention in recent years. Essential oils contain various effects such as toxicity, repellency, oviposition and feeding deterrency on different species of insects. In this research, effects of essential oil of                    Thymus vulgaris L. (Lamiaceae) were studied on Callosobruchus maculatus (F.) (Col., Bruchidae) at 27±1º C and 65±5 % RH in dark condition. The essential oil was obtained via hydro distillation. Ovicidal and larvicidal effects of the essential oil were investigated on C. maculatus Results showed that old eggs were more sensitive than the young ones. However old larvae were less       sensitive than the young ones. The highest oviposition deterrency of C. maculates was observed at highest concentration of 1500 ppm.