جستجوی مقالات مرتبط با کلیدواژه "باغ انار" در نشریات گروه "گیاهپزشکی"

The carob moth, Ectomyelois ceratoniae Zeller, is the most important pest on   pomegranate fruits and has several overlapping generations per year in Iran. This paper investigated the use of a mechanistic model for describing the effect of the control strategy on the size of the total population of the carob moth. The analytical solution of mechanistic model was written in the form of a logistic probability density function by Matis et al. (2006). The logistic probability density function fits this carob moth data very well for control and treatment fields (r2=0.91 and 0.95). The parameters of the model are the predicted peak size, Nmax, the predicted time of peak, tmax, and an approximate per capita birth and death rate, all of which are important in practical application. In general, this paper demonstrates the utility of analyzing carob moth population data using mechanistic models and their underlying rate parameters.

The carob moth Ectomyelois ceratoniae (Zeller) is a serious pest on carob, pomegranate, dates, citrus and almond worldwide, and causes considerable losses in pomegranate orchards in Iran. Venturia canescens is one of larval parasitoids of this pest that is known as parasitoid of some stored products too. The present study assessed demographic parameters in two populations of the V. canescens (Hym.: Ichneumonidae) that were collected from pomegranate orchards, and stored products in storages. The each of two populations collected were developed on fifth instar larvae of Ephestia kuehniella as host under laboratory conditions at 25 ± 1°C, 65 ± 5% RH and a photoperiod of 16: 8 h (L: D). Life table data were analyzed using age-stage, two- sex life table procedure. The developmental time of parasitoid wasps of orchards, and stored products populations were 22.37 and 24.73 days and the values of oviposition period were 9.33 and 8.66 days, respectively. The life expectancy values were recorded 15.07 and 18.85 days, respectively. The intrinsic rate of increase (rm) were 0.168 and 0.153( females/female/days), the finite rates of increase (λ) were 1.183 and 1.185 (females/female/days), the net reproductive rates (R0) were 78.67 and 75.93 (females/female) and the mean generation time (T) were 25.97 and 28.23 days, respectively in above mentioned populations. This study suggests that orchard population may had highest performance than stored products population regarding the life table parameters. Complementary research to study biology and behavior of two populations needed.