Integrated Management of Pests and Diseases Attacking Honey Bee Colonies

Sweelam, M. E.; Abdelaal, A.; Khataby, A. M.

doi:10.21608/mjapam.2019.123029

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“…Most studies have been focused on therapeutic methods for nosemosis while neglecting the side effects of these treatments on honeybees. The antibiotic Metronidazole, sold under the common name Flagyl, is used for treating anaerobic bacteria and certain parasites, including Nosema bee infections of the small intestine, where it proved to be very effective against Nosema spores (Gisder et al, 2015;Sweelam et al, 2019). Despite it being considered a cheap alternative to fumagillin and becoming commonly used by beekeepers to treat nosema infections, its side effects can only be explained in medical reports and little information has been reported about its effect on honeybees.…”

Section: Introductionmentioning

confidence: 99%

Secondary effect of in-hive Metronidazole application on some biological, histological and biochemical activities of Honeybee workers (Apis mellifera L.)

Sakla

2021

Egyptian Journal of Agricultural Research

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Several factors have been linked to honeybee colonies' decline, but many inhive therapies have been frequently used and little is known about their effects on honeybees. This study is aimed at evaluating some biological, histological, and biochemical changes in honeybees (Apis mellifera L.) workers exposed during development to the antibiotic Flagyl (metronidazole), commonly used as nosemosis therapy, compared to the natural substance thymol. This work was conducted in early spring, and the medicated sugar syrup was administered by feeding it to the honeybee colonies. Results revealed a significant reduction in the mean worker brood area and honey yield in colonies that received flagyl compared to control and thymol colonies (P<0.05). The weight of newly emerged workers in control colonies tended to be heavier than those in medicated colonies, though the differences were statistically insignificant. The histological analysis of the midgut confirmed severe changes in the cell structure of bees that received flagyl during development. It induced clear alterations in the epithelial cells, peritrophic membrane, and muscular layer. A significant reduction in protein content, as well as a decline in basic digestive enzymatic activity, were accompanied by changes in the midgut tissue as a result of flagyl application. Overall, these results are valuable in highlighting the validity of midgut histology and enzyme activities as indicators for evaluating the toxicity of used inhive therapy.

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Section: Introductionmentioning

confidence: 99%

Secondary effect of in-hive Metronidazole application on some biological, histological and biochemical activities of Honeybee workers (Apis mellifera L.)

Sakla

2021

Egyptian Journal of Agricultural Research

View full text Add to dashboard Cite

show abstract

Integrated Management of Pests and Diseases Attacking Honey Bee Colonies

Cited by 1 publication

References 0 publications

Secondary effect of in-hive Metronidazole application on some biological, histological and biochemical activities of Honeybee workers (Apis mellifera L.)

Secondary effect of in-hive Metronidazole application on some biological, histological and biochemical activities of Honeybee workers (Apis mellifera L.)

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