در آزمايشگاه NARANGA AENESCENS نسبت به تراكم هاي كرم سبز برگخوار برنج ANDRALLUS SPINIDENS F. )HEM.PENTATOMIDAE( واكنش تابعي سن شكارگر

The Functional Response of Andrallus spinidens F.(Hem: Pentatomidae) to Densities of Naranga aenescens in laboratory (Lep: Noctuidae)

Biological studies on predacious pentatomid bug, Andrallus spinidens showed that the larvae of the green rice semilooper, Naranga aenescens were the most important prey of the predator in Guilan rice fields.The functional response of the predator A. spinidens was tested at various densities of the Naranga aenescens (2, 4, 8, 16, 32 and 64 larvae) under laboratory conditions (26 ± 1 oc and 56 ± 2%R.H. and 10 D: 14L Period light). The Holling disc equation fitted to the data. A type 11 functional response curve was exhibited by the adults of A. spinidens. The instantaneouse searching efficiency (a) was 24.86 and 20.15, respectively after 8 and 24 hours.