Field Application of an Innovative Approach to Assess Honeybee Health and Nutritional Status

Overview

Journal Animals (Basel)

Date 2024 Aug 10

PMID 39123709

Authors

Cecilia Rudelli

Roberta Galuppi

Riccardo Cabbri

Thomas Dalmonte

Luca Fontanesi

Giulia Andreani

Gloria Isani

Affiliations

Soon will be listed here.

Abstract

Environment, forage quality, management practices, pathogens, and pesticides influence honeybee responses to stressors. This study proposes an innovative approach to assess colony health and performance using molecular diagnostic tools by correlating hemolymph proteins with common measures of colony strength, prevalent honeybee pathogens ( and spp.), and essential trace elements (iron, zinc and copper). Colonies were selected from four apiaries located in different environmental and foraging conditions in the province of Bologna (Italy). Hemolymph samples were taken from June to October 2019. The infestation of the colonies was estimated by assessing the natural mortality of the mites, while the bees were tested for spp. spores using a microscopic method. Hemolymph proteins were quantified and separated using SDS-PAGE, and colony performance was assessed by determining adult bees, total brood, honey, and pollen reserves. The biomarkers measured proved to be useful for monitoring changes in performance and trophic conditions during summer and early autumn. Significant correlations were found between hemolymph proteins and colony performance measures. A positive correlation between pollen reserves, vitellogenin, and hexamerin 70a highlights the importance of these proteins for successful overwintering. In October, infestation was negatively correlated with total proteins, vitellogenin, apolipophorin II, transferrin, and hexamerin 70a, with negative implications for overwintering; furthermore, infestation was also negatively correlated with iron content, potentially affecting iron homeostasis.

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