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  1. No Access

    Article

    Nanoparticles—mediated entomotoxicology: lessons from biologica

    Nanotechnology has grown in importance in medicine, manufacturing, and consumer products. Nanoparticles (NPs) are also widely used in the field of insect pest management, where they show a variety of toxicolog...

    Lamia M. El-Samad, Nahed R. Bakr, Mohamed Abouzid, Eslam S. Shedid in Ecotoxicology (2024)

  2. Article

    Open Access

    Gamma irradiation and ozone application as preservation methods for longer-term storage of bee pollen

    Bee pollen is a healthy product with a good nutritional profile and therapeutic properties. Its high moisture content, however, promotes the growth of bacteria, molds, and yeast during storage commonly result ...

    Yahya Al Naggar, Ibrahim M. Taha in Environmental Science and Pollution Resear… (2024)

  3. No Access

    Article

    Honey bee venom promotes the immune system and reduces Vairimorpha (Nosema) ceranae infection in honey bees (Apis mellifera L.)

    Bee venom (BV) extraction has become a standardized practice, characterized by being safe, simple, and causing no harm to bees. Though it demonstrated significant antimicrobial activity, its potential activity...

    Shaymaa H. Mahmoud, Mohamed Kandel, Hesham El-Seedi, Yahya Al Naggar in Apidologie (2024)

  4. Article

    Open Access

    Emerging threats and opportunities to managed bee species in European agricultural systems: a horizon scan

    Managed bee species provide essential pollination services that contribute to food security worldwide. However, managed bees face a diverse array of threats and anticipating these, and potential opportunities ...

    Bryony K. Willcox, Simon G. Potts, Mark J. F. Brown, Anne Alix in Scientific Reports (2023)

  5. No Access

    Article

    Insights into the mechanism of histamine synthesis and recycling disruption induced by exposure to CdO NPs in the fruit fly (Drosophila melanogaster)

    Exposure to a sublethal concentration of CdO nanoparticles impairs the vision of the fruit fly (Drosophila melanogaster) by disrupting histamine (HA) synthesis and recycling mechanisms. To gain more insights, we ...

    Samar El Kholy, Yahya Al Naggar in Environmental Science and Pollution Research (2023)

  6. No Access

    Article

    Exposure to a sublethal concentration of CdO nanoparticles impairs the vision of the fruit fly (Drosophila melanogaster) by disrupting histamine synthesis and recycling mechanisms

    While there is substantial literature on potential risks associated with exposure to emerging nanomaterials, less is known about the potential effects of hazardous metallic nanoparticles on vision, as well as ...

    Samar El Kholy, Yahya Al Naggar in Environmental Science and Pollution Research (2023)

  7. Article

    Open Access

    Exposure to polystyrene microplastic beads causes sex-specific toxic effects in the model insect Drosophila melanogaster

    The toxicity of MPs on aquatic creatures has been extensively studied, but little attention was paid to terrestrial organisms. To fill this gab, we conducted a series of experiments using Drosophila as a model or...

    Samar El Kholy, Yahya Al Naggar in Scientific Reports (2023)

  8. Article

    Chronic in-hive exposure to a field-relevant concentration of CloserSC (24% sulfoxaflor) insecticide altered immunological and physiological markers of honey bee foragers (Apis mellifera)

    Sulfoxaflor (SULF), a well-known alternative for the banned neonicotinoids, is not environmentally persistent, yet numerous studies using field-realistic levels have demonstrated its detrimental impact on hone...

    Fatma S. Ahmed, Walid S. Helmy, Hatem Sharaf El-Din, Yahya Al Naggar in Apidologie (2023)

  9. Article

    Sublethal effects of herbicides clethodim, haloxyfop-P-methyl, and their mixture on honey bee health

    Herbicides are the most frequently used pesticides, accounting for more than 60% of all pesticides used in agriculture around the world. Clethodim (CTD) (Vixtol Super® 24% EC), haloxyfop-p-methyl (HFM) (Gallant S...

    Ibrahim A. Mohamed, Eslam M. Omar, Amer I. Tawfik, Abdulraouf M. A. Amro in Apidologie (2022)

  10. No Access

    Article

    Environmental risk, toxicity, and biodegradation of polyethylene: a review

    Polyethylene is the second-most-commonly-used commercial polymer. It is used in various industries, including agricultural mulches, composite materials, and packaging. Since polyethylene is not biodegradable, ...

    Dina M. El-Sherif, Manal G. Eloffy in Environmental Science and Pollution Resear… (2022)

  11. Article

    Crushing corn pollen grains increased diet digestibility and hemolymph protein content while decreasing honey bee consumption

    A honey bee colony’s ability to grow and develop is dependent on adequate nutrition. Bees collect pollen from flowers as a source of protein, fat, vitamins, and minerals. The crude protein content of corn poll...

    Eslam M. Omar, Hesham Y. A. Darwish, Ali A. Othman, Hesham R. El-Seedi in Apidologie (2022)

  12. Article

    Chronic exposure to a field-realistic concentration of Closer® SC (24% sulfoxaflor) insecticide impacted the growth and foraging activity of honey bee colonies

    The effects of sulfoxaflor on various pollinators have long been debated. However, there have been few in-hive studies on sulfoximines, and the effects on honey bee colony growth and foraging activity are unkn...

    Hatem Sharaf El-Din, Walid S. Helmy, Yahya Al Naggar, Fatma S. Ahmed in Apidologie (2022)

  13. Article

    Open Access

    Investigating the current environmental situation in the Middle East and North Africa (MENA) region during the third wave of COVID-19 pandemic: urban vs. rural context

    Coronavirus 2019 (COVID-19) pandemic led to a massive global socio-economic tragedy that has impacted the ecosystem. This paper aims to contextualize urban and rural environmental situations during the COVID-1...

    Mohamed Abouzid, Dina M. El-Sherif, Yahya Al Naggar in BMC Public Health (2022)

  14. Article

    In silico screening of potent bioactive compounds from honeybee products against COVID-19 target enzymes

    After the early advent of the Coronavirus Disease 2019 (COVID-19) pandemic, myriads of FDA-approved drugs have been massively repurposed for COVID-19 treatment based on molecular docking against selected prote...

    Moataz A. Shaldam, Galal Yahya in Environmental Science and Pollution Resear… (2021)

  15. No Access

    Article

    Sublethal effects of chronic exposure to CdO or PbO nanoparticles or their binary mixture on the honey bee (Apis millefera L.)

    Cadmium and lead-based nanotechnologies are increasingly used in agricultural, industrial, and biological processes; however, potential adverse effects of nanomaterials on honey bees had not been assessed. In ...

    Yahya AL Naggar, Khaled Dabour, Saad Masry in Environmental Science and Pollution Resear… (2020)

  16. Article

    Open Access

    Consequences of a short time exposure to a sublethal dose of Flupyradifurone (Sivanto) pesticide early in life on survival and immunity in the honeybee (Apis mellifera)

    Dramatic losses of pollinating insects have become of global concern, as they threaten not only key ecosystem services but also human food production. Recent research provided evidence that interactions betwee...

    Yahya Al Naggar, Boris Baer in Scientific Reports (2019)

  17. No Access

    Article

    Neonicotinoid insecticides in pollen, honey and adult bees in colonies of the European honey bee (Apis mellifera L.) in Egypt

    Honeybee losses have been attributed to multiple stressors and factors including the neonicotinoid insecticides (NIs). Much of the study of hive contamination has been focused upon temperate regions such as Eu...

    Garry Codling, Yahya Al Naggar, John P. Giesy, Albert J. Robertson in Ecotoxicology (2018)

  18. No Access

    Chapter and Conference Paper

    Fuzzy Logic and Voronoi Diagram Using for Cluster Head Selection in Ubiquitous Sensor Networks

    In this paper, we propose a new algorithm called Cluster-Head selection using Fuzzy Logic with Voronoi diagram in USNs (CHS-FL-VD) that is a distributed algorithm which makes local decisions to select cluster ...

    Yahya Al-Naggar, Andrey Koucheryavy in Internet of Things, Smart Spaces, and Next… (2014)