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  • Title: Prevalence and Phylogenetic Network Analysis of Nosema apis and Nosema ceranae Isolates from Honeybee Colonies in Türkiye.
    Author: Akpınar RK, Gürler AT, Bölükbaş CS, Kaya S, Arslan S, Aydın C, Türlek ŞÖ, Çelik SN, Beyazıt A, Öncel T, Erol U, Çiftci AT, Bastem Z, Ünal HH, Şenel M, Bozdeveci A, Karaoğlu ŞA, Yaldız M, Güven G, Küçükoğlu B, Kurt M.
    Journal: Acta Parasitol; 2024 Sep; 69(3):1538-1546. PubMed ID: 39164540.
    Abstract:
    PURPOSE: Nosemosis is a disease that infects both Western honeybees (Apis mellifera L.) and Asian honeybees (Apis cerana) and causes colony losses and low productivity worldwide. In order to control nosemosis, it is important to determine the distribution and prevalence of this disease agent in a particular region. For this purpose, a national study was conducted to assess the prevalence of Nosema ceranae and N. apis throughout Türkiye, to perform network analyses of the parasites, and to determine the presence of nosemosis. METHODS: In this study which aimed to assess the prevalence of N. apis and N. ceranae in different colony types and regions where beekeeping is intensive in Türkiye, specimens were collected from hives with no clinical signs. RESULTS: A total of 1194 Western honeybee colonies in 400 apiaries from 40 provinces of Türkiye were examined by microscopic and molecular techniques. Nosemosis was found in all of 40 provinces. The mean prevalence ratio was 64.3 ± 3.0, with 95% CI in apiaries and 40.5 ± 2.9, 95% CI in hives. Nosema ceranae DNA was detected in all of positive hives, while N. ceranae and N. apis co-infection was detected in only four colonies. CONCLUSION: This study showed that nosemosis has spread to all provinces, and it is common in every region of Türkiye. All of the N. ceranae or N. apis samples examined were 100% identical within themselves. Network analysis showed that they were within largest haplotype reported worldwide.
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