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Molecular Identification of Nosema species in East Azerbaijan province, Iran

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Author(s): Razmaraii, N. | Sadegh-Eteghad, S. | Babaei, H. | Paykari, H. | Esmaeilnia,K. | Froghy, L.

Journal: Archives of Razi Institute
ISSN 0365-3439

Volume: 68;
Issue: 1;
Start page: 23;
Date: 2013;
Original page

Keywords: Epidemiology | Molecular Characterization | Nosema | East-Azerbaijan | Iran

ABSTRACT
Nosema is a genus of microsporidia, which have significant negative impacts on honeybees. The aim of thisstudy is the epidemiological evaluation and molecular characterization of Nosema spices in various countiesof East-Azerbaijan province (Northwest of Iran). 387 samples were collected from colonies maintained invarious counties of East-Azerbaijan province. Samples after preparation were examined by a lightmicroscope for presence of Nosema spores. PCR method (SSUrRNA gene) was used to differentiatebetween Nosema apis (N. apis) and N. ceranae. Descriptive statistics were used for data analysis. Totalinfection prevalence of the microscopic evaluation and PCR tests were 225 (58.1%) and 260 (67.1%)respectively, total validity of PCR test against the microscopic test was computed equal to 1.1 in this case.Disease distribution in various counties of study area was variable and N. ceranae was the only Nosema species found to infect honeybees. The one species presence and different distribution of Nosema positive samples in various counties of East-Azerbaijan province may be due to multiple reasons. Furthermore,epidemiological information helps us to improve disease management practices in the studied area, apply new hygiene policy and reduce extra costs of production.
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