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چکیده
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Macrolophus pygmaeus Rambur is one of the most omnivorous predators which has considered in integrated pest management programs, especially for greenhouse pest management. In this study, biological properties and life table statistics of M. pygmaeus by feeding on eggs of Ephestia kuehniella and Artemia sp. were studied under laboratory conditions (25±1°C, 65±5 % relative humidity and 16:8h L: D) with 60 replication. The pods of green bean Phaseoulus vulgaris served as oviposition substrate and the moisture source. Data analysis carried out based on age-stage two sex (TWOSEX-MSChart (version 2015)) life table analyzing program. The results showed, developmental time in nymphal stages which feed on the eggs of E. kuehniella and Artemia cysts for males and females equal to 17.04 ± 0.11, 18.06 ± 0.18 and 17.31 ± 0.09, 18.17 ± 0.15 days respectively. The longevity for males and females were estimated 23.80 ± 1.22, 22.0 ± 0.68 and 21.55 ± 1.20, 19.06 ± 0.96 day respectively; the average number of oviposition were recorded 37.48 ± 3.65 and 35.67 ± 4.14. per female on the first and second diet respectively, as well as intrinsic rate of natural increase (rm) calculated as 0.08 ± 0.004, 0.06 ± 0.005 day-1. Additionally, finite rate of increase (λ) recorded 1.08 ± 0.004, 1.07 ± 0.005 day-1 and net reproductive rate (R0) as 18.12 ± 2.31, 10.70 ± 1.88 (eggs/individual) respectively. Furthermore, mean generation time (T) estimated as 35.93 ± 0.26, 36.66 ± 0.41 day and Gross reproduction rate (GRR) 21.53± 2.68, 19.14± 3/05 (Eggs/individual) respectively. The results indicated the significant differences of diet on the duration of incubation, nymphal period, survival rate, reproduction rate and longevity of M. pygmeaus. Also the results showed that feeding on E. kuehniella reduces nymphal period, increase productivity and longevity of adults. According to the present results, E. kuehniella is more suitable prey for breeding of this predator.
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