تأثیر پرورش انفرادی و گروهی روی برخی فراسنجه‌های زیستی سن شکارگر (Hemiptera: Miridae) Rambur pygmaeus Macrolophus در شرایط آزمایشگاهی

Macrolophus pygmaeus Rambur the family in Miridae, is one of the most omnivorous predators which has considered in integrated pest management programs, especially for greenhouse pest management. So that's predators bug M. pygmaeus some of the most common natural enemies used in the biological control of pests affecting vegetable crops. In the current study, With the objective of investigating the possibility of group rearing and its effect on the predator's biological parameters, biological properties and life table statistics of predators bug M. pygmaeus by feeding on eggs of Ephestia kuehniella were studied under laboratory conditions (25±1°C, 65±5 % relative humidity and 16:8h L: D) as 60 replications for individual and 45 replications for group rearing. The pods of green bean Phaseoulus vulgaris served as oviposition substrate and the moisture source for predators. Data analysis carried out based on age-stage two sex (TWO SEX-MS Chart (Chi, 2017() life table analyzing program. Based on the results, intrinsic rate of natural increase (rm) calculated as 0.0806, 0.0809 day-1. Additionally, finite rate of increase ( (recorded 1.0839, 1.0843 day-1 and net reproductive rate (R0) as 18.1166, 17.8400 eggs/individual respectively. Furthermore, mean generation time (T) estimated as 35.9262, 35.6000 days and Gross reproduction rate ( ) 21.5290, 22.4900 Eggs/individual respectively. The outcomes showed that the biological and life table parameters numerically better suited in individual rearing as well as the age-stage specific survival rate (Sxj), age-stage specific fecundity (fx), age-specific survival rate (lx), age-specific fecundity (mx), however, no significant differences observed in the parameters of individual and group rearing statically. Therefore, group rearing is suggested for economic propagation of this predator