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INFESTATION OF HONEYBEE (APIS MELLIFERA) FAMILIES BY MICROSPORIDIANS OF THE GENUS NOSEMA IN TOMSK PROVINCE
Parazitologiia
|November 9, 2017
Summary
Nosema (microsporidian parasites) infections, known as nosemosis, affected over 30% of honeybee colonies in Tomsk Province between 2012-2015. Nosema apis was the predominant pathogen, though Nosema ceranae and co-infections were also found.
Area of Science:
- Veterinary Entomology
- Apiculture Science
- Microbiology
Background:
- Nosema species are microsporidian parasites that cause nosemosis, a significant disease affecting European honeybees (Apis mellifera L.).
- Understanding the prevalence and distribution of Nosema infections is crucial for managing honeybee health and colony survival.
Purpose of the Study:
- To investigate the infestation of honeybee colonies and apiaries by Nosema species in Tomsk Province.
- To determine the prevalence of nosemosis and identify the specific Nosema species involved.
Main Methods:
- Field surveys were conducted from 2012 to 2015 in Tomsk Province.
- Honeybee colonies and apiaries were examined for the presence of Nosema infection.
- Identification of Nosema species (N. apis and N. ceranae) was performed in infected colonies.
Main Results:
- Nosemosis was detected in 31.3% of honeybee colonies and 25.8% of apiaries studied.
- Infestation rates exceeded 40% in 2014-2015.
- Nosema apis was identified in 84.4% of infected colonies, N. ceranae in 9.4%, and co-infections in 6.3%.
Conclusions:
- Nosemosis is a prevalent issue in Tomsk Province honeybee populations.
- Nosema apis is the dominant species, but N. ceranae and mixed infections pose a threat.
- Factors such as climate and imported bee colony controls likely influence disease spread.
