Study Of The Effect Of Silver And Zinc Nanoparticles Prepared Biologically By The Fungus Beauveria Bassiana On The Feeding Behavior And The Insect Body Content Of Some Materials And Nutrients In The Periplaneta Americana L.

Abstract

The study was conducted in the laboratories of the Department of Prevention / College of Agriculture / Tikrit University during the years 2023-2024 to study the effect of the nanomaterial resulting from treating the fungus Beauveria bassiana with a solution of silver nitrate and a solution of zinc oxide as it affected the daily feeding rate of the last-age nymphs of the Periplaneta americana, as this rate was 0.015 g / insect on the second day of treatment with the nanomaterial prepared using silver nitrate, while it was 0.04 for the zinc oxide treatment. While it was 0.07 g / insect for the control treatment, and the nanomaterial affected the two solutions in addition to the control treatment in a fluctuating manner during seven days of feeding. Both silver nitrate and zinc oxide treatments and the control treatment recorded 0.007, 0.05, 0.085 gm/insect on the eighth day of treatment. The treatment also affected the percentage of each of the fats for the concentrations of 0.125, 0.250, 0.500 mg/L and the control treatment if it was 23.8, 23.9, 24 and 23.8 mg) respectively for the silver nitrate treatment, while it was 22.3, 20.6, 19.5, 23.8 for the zinc oxide treatment. While the protein weight was 234.24, 127.64, 35.72, 382.81 mg/g for silver nitrate, while it was 304.37, 43.756, 233.125, 43.75 mg/g for zinc oxide. It also affected the potassium element, as the concentrations were recorded as 0.125, 0.250, 0.500 mg/L and the control treatment was 4.65, 2.36, 0.54, 6.22 mg respectively for silver nitrate and 5.14, 3.21, 0.75 and 6.25 mg respectively for zinc oxide. It also affected the weight of the sodium element, as the concentrations were recorded as 0.125, 0.250, 0.500 mg/L and the control treatment was 2.63, 1.22, 0.46, 3.24 mg respectively for silver nitrate and 2.45, 1.08, 0.42 and 3.34 mg respectively for zinc oxide. It affected the percentage of phosphorus element, as the above concentrations were recorded, 4.32, 2.61, 0.40, 6.13 mg for silver nitrate, while they were 5.12, 3.43, 0.70, 6.24 mg for zinc oxide.