Molecular characterization of viruses found in honeybee (Apis mellifera) colonies infested with Varroa destructor and Nosema cerana in Egypt.

Honey bees (Apis mellifera) have a vital role as pollinators of various crops in the global food supply. Honeybee colonies in Egypt have recently experienced an unexplained rise in annual loss due to a phenomenon known as Colony Collapse Disorder (CCD). In the current study, honey bees were collected from 14 sites from eight governorates in Egypt.

Deciphering pyrethroid resistance in Cx. pipiens (L): Implications of cytochrome P450; expression profiling and regulatory microRNA.

Over the past decades, the extensive use of pyrethroids insecticides for vector control has resulted in the development of insecticide resistance. Cytochrome P450 has been recognized to play a critical role in the metabolic detoxification of insecticides. In the current study, Culex pipiens mosquitoes were collected from Giza Governorate in Egypt and tested for insecticide susceptibility against deltamethrin.

Enhanced antibacterial activity of Egyptian local insects' chitosan-based nanoparticles loaded with ciprofloxacin-HCl.

Chitosan (CS), possess enormous properties, being biodegradable, biocompatible, and antimicrobial. CS could be formulated and casted into different forms including 2D films, hydrogels, and nanoparticles. Chitosan-based nanoparticles (CSNPs) showed countless interest as polymeric drug delivery system (DDS) with its improved bioavailability, and stability when compared with traditional DDS.

Enhanced wound healing activity of desert locust (Schistocerca gregaria) vs. shrimp (Penaeus monodon) chitosan based scaffolds.

Chitosan (CS) has received great attention in tissue engineering, especially in wound healing acceleration. In this study, chitin was isolated from desert locust (Schistocerca gregaria) and shrimp (Penaeus monodon) then deacetylated to chitosan. Then, chitosan was characterized by degree of deacetylation (DD), molecular weight (M.

Isolation and characterization of chitosan from different local insects in Egypt.

Chitin was extracted from four different local sources: the shrimp (Penaeus monodon), the desert locust (Schistocerca gregaria), the honey bee (Apis mellifera) and the beetles (Calosoma rugosa). Chitosan was then obtained by deacetylation of chitin and physicochemically characterized using the Fourier transform infrared (FTIR) and X-ray diffraction. The moisture content, water binding capacity, fats binding capacity, ash content were determined and chitosans morphology was visualized using the scanning electron microscope (SEM).

Molecular phylogeny and identification of the peach fruit fly, Bactrocera zonata, established in Egypt.

The genetic structure of the Egyptian peach fruit fly (Bactrocera zonata (Saunders) (Diptera: Tephritidae)) population was analyzed using total RNA from adult females. A portion of mitochondrial cytochrome oxidase I (COI), 369 bp was amplified using RT-PCR, and was sequenced and analyzed to clarify the phylogenetic relationship of B. zonata established in Egypt.