Potential of fumagillin against Nosema sp., A microsporidian endoparasite of honey bee Apis mellifera L.

Nosema apis and Nosema ceranae are two kinds of microsporidian parasites that cause the recently identified illness known as nosemosis in European honey bees (Apis mellifera). 10 samples of adult honey bees from each infected colony of a single apiary were collected, located in the village of Handia, district of Prayagraj, India, from September 2022 to January 2023 to investigate the frequency of intestinal infections and the effectiveness of fumagillin antibiotic against nosemosis in A. mellifera with the use of monocular LED optical microscopy and a haemocytometer, the mean and median spore count of each composite sample was calculated. It was observed that 5% of the infected gut samples contained Nosema spores. The results show that 10% of colonies tested positive for Nosema, and fumagillin is effective against nosemosis.