Nosema Ceranae Interactions with Nosema apis and Black Queen Cell Virus

Anna Maria Gajda, Ewa Danuta Mazur, Andrzej Marcin Bober and Michał Czopowicz
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Anna Maria Gajda: Institute of Veterinary Medicine, Warsaw University of Life Sciences, Nowoursynowska St. 166, 02-787 Warsaw, Poland
Ewa Danuta Mazur: Institute of Veterinary Medicine, Warsaw University of Life Sciences, Nowoursynowska St. 166, 02-787 Warsaw, Poland
Andrzej Marcin Bober: Department of Honeybee Diseases, National Veterinary Research Institute, 57 Partyzantow Avenue, 24-100 Pulawy, Poland
Michał Czopowicz: Institute of Veterinary Medicine, Warsaw University of Life Sciences, Nowoursynowska St. 166, 02-787 Warsaw, Poland

Agriculture, 2021, vol. 11, issue 10, 1-17

Abstract: Nosema ceranae is a relatively new pathogen of the honeybee ( Apis mellifera ) and the course of type C nosemosis (the disease that it causes) is not entirely known. In order to better understand the course and the consequences of this disease, laboratory experiments were performed. They aimed to compare the course of N. ceranae infection with the course of Nosema apis infection, taking its influence on the black queen cell virus (BQCV) into account. Determination of the quantity of N. ceranae and BQCV genetic material in laboratory tests was performed using real-time PCR. In mixed Nosema infections, N. ceranae “wins” the competition and manages to outnumber N. apis significantly. BQCV exacerbates the course of both A and C nosemoses, but the data shows that in the case of nosemosis C and this viral infection, the mortality rate was the highest from all examined groups. Obtained results show that N. ceranae is more pathogenic for A. mellifera than N. apis , and the course of type C nosemosis is much heavier, which results in the shortened life spans of bees, and in connection with BQCV it becomes even more dangerous to bees.

Keywords: Nosema ceranae; Nosema apis; black queen cell virus; host-parasite interactions; pathogen-pathogen interactions; Apis mellifera (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
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