Coevolution may be an important component of the sustainability of importation biological control, but how frequently introduced natural enemies coevolve with their target pests is unclear. Here we explore whether comparative population genetics of the invasive walnut aphid, Chromaphis juglandicola, and its introduced parasitoid, Trioxys pallidus, provide insights into the localized breakdown o...

Small walnut aphid (Chromaphis juglandicola (Kaltenbach) (Hemiptera: Aphididae) is important pest in orchards Lake Van Basin, Turkey. In this study, the life-table parameters reflecting population growth rate and predation of Chrysoperla carnea (Stephen) (Neuroptera: Chrysopidae), which one predators pest, were determined. Life table estimated according to age-stage, two-sex life method. Varian...

Homogeneity in azinphosmethyl resistance was assessed in males of a laboratory-selected (Select-H) and susceptible (Yolo) colony of Trioxys pallidus (Hymenoptera: Aphidiidae) using a time response assay. No evidence of heterogeneity within the two colonies was found. Reciprocal crosses between the Yolo and Select-19 colonies resulted in F1 females which exhibited a semidominant response to azin...

Regarded as one of the economically important crops Kashmir, walnut trees are vulnerable to insect pests and diseases leading great economic losses every year, thus have knowledge about various factors that leads it, is indispensable. The objective present study was evaluate population dynamics in terms abundance distribution Chromaphis juglandicola response biotic abiotic factors. Sites were m...

0