Evaluation of oviposition-site preference behavior in predatory bug Deraeocoris lutescens Schilling (Hemiptera: Miridae)

Abstract :

The present research aimed to study the oviposition site preference of the predatory bug Deraeocoris lutescens Schilling (Hemiptera: Miridae) at 25±1°C temperature, relative humidity of 60±10% and a photoperiod of 16:8 h (L:D). The experiments on different plant species were investigated among four groups of plants, six crop plant species, three greenhouse plant species, five orchard plant species and five ornamental plant species. Among different plant species, most oviposition was on broad bean leaves with a total of 41.7±3.7, sweet pepper with 31.1±3.4, grape leave with 13.9±2.8 and begonia with 39.3±3.0 eggs in each group. In order to determine preference of D. lutescens for oviposition, broad bean leaves which infested with different nutritional sources, Aphis gossypii, Aphis fabae, Myzus persicae, eggs of Sitotroga cerealella, 10% honey emulsion and 10% honey emulsion + yeast extract were used. Among these leaves as substrates of oviposition, the adult females showed higher preference for leaves infested with M. persicae than with other nutritional sources. The preferred site for egg deposition at light and dark area by D. lutescens females was tested. The adult females showed significantly higher preference for the leaves as substrates of oviposition in the dark area than in the light area

Keyword :

Predatory bug, Deraeocoris lutescens, oviposition site preference, plant species, nutritional sources

Author(s) : Azimizadeh, N., Ahmadi, K., Imani, S., Takalloozadeh, H. M., Sarafrazi, A.
Downloads : 1720
Published Issue : 2012 Vol. 7 Number 1

2012 Vol. 7 Number 1