Exploring Eco-Friendly Microbial Strategies for Nosemosis Control in Honeybee

Nosemosis is an intestinal infection caused by intracellular fungal organisms from the Vairimorpha (formerly Nosema) group, which seriously harms honeybee colonies and is a factor in their worldwide decline. With the ban on fumagillin use in European apiculture and the limitations of conventional treatments, it is essential to identify sustainable alternative solutions. This study presents new environmentally friendly microbe-based strategies to prevent and treat infection, focusing on probiotics, postbiotics, synbiotics, and mixes with plant extracts, as well as suggesting a new approach for the future. This review discusses the latest results based on using beneficial bacteria (e.g., Lactobacillus and Enterococcus faecium) and their byproducts to decrease the spore levels and modulate the gut bacteria pattern. Moreover, innovative approaches, such as genetically engineered gut bacteria to target pathogen gene expression through RNA interference, have been mentioned. Although results vary depending on microbial strain, delivery method, season, and ecological context, microbial treatments represent a promising, safe, and adaptable alternative for modern apiculture. The paper is necessary to validate these strategies' real-world efficacy and to develop standardized microbial formulations suitable for practical implementation by beekeepers.