به همراه كرم سبز برگخوار برنج به عنوان شكار در شرايط آزمايشگاه ANDRALLUS SPINIDENS)F( )HEM: PENTATOMIDAE: ASOPINAE تاثير تغذيه از گياه برنج در بهبود روش پرورش انبوه سن شكارگر آندرالوس

Effect of rice plant feeding with the aim of improving the mass rearing method of Andrallus spinidens (F.) (Hem: Pentatomidae: Asopinae) fed with the Rice Semilooper as prey under laboratory conditions

Predatory bug. A. spinidens is one of the natural enemies of iepidopteran larvae pests in Northern rice fields of Iran. The effect of feeding on the rice plant in the development and survival of nymphs, longevity and oviposition of females, and predation of A.spinidens fed with the Rice Semilooper, Naranga aenescens Moor (Lep.: Noctuidae) was studied under laboratory conditions [temperature of 25±2°C, relative humidity of 75±5% and a photoperiod of 16:8 hours (light:dark)] with the aim of improving the mass rearing of the predator. Larvae of N. aenescens were sufficiantly provided for both the treatments (with and without rice plant). Duration of the embryonic, nymphal and one generation of A. spinidens were similar in two treatments, but daily predation in each of them was significantly different, so that A.spinidens in the nymphal period preyed on 21.60±2.94 and 17.20±1.95 larvae in the presence and absence of plant, respectively. A. spindens during nymphal and adult stages fed on prey and rice plants, had improved ovipsition period, higher number of eggs and survival than those fed only on prey. Therefore, it seems that to rear A. spinidens with prey together with host plant (or sowing them in the culture containers), improves the mass rearing method of this predator.