Turkish Journal of Agriculture and Forestry
Abstract
The brown marmorated stink bug, Halyomorpha halys feeds on a wide range of crops and causes major economic losses. With its high flight capacity, H. halys is an invasive species that damages many crops worldwide. By elucidating the activity, distribution, and prevalence of the microsporidian pathogen Nosema maddoxi, the damage and economic losses caused by H. halys can be reduced. This study aimed to assess the distribution and seasonal prevalence of N. maddoxi in H. halys populations distributed throughout hazelnut fields the Eastern Black Sea Region of Türkiye. H. halys adults were collected and examined in detail under the microscope in the laboratory. The highest infection rates were recorded at the Borçka location in Artvin Province (76.04% in 2023) and the Fındıklı location in Rize province (79.2% in 2024). When the seasonal prevalence of N. maddoxi was examined, the highest infection rates were in summer and fall, while the lowest infection rate was in spring in overwintering adults. In this study, the distribution and seasonal prevalence of the microsporidian pathogen, N. maddoxi isolated from H. halys in Türkiye were assessed for the first time.
Author ORCID Identifier
ÖMER ERTÜRK: 0000-0001-5837-6893
SAMET EKER: 0000-0002-2540-0516
MUSTAFA YAMAN: 0000-0001-5656-7266
GÖNÜL ALGI: 0000-0003-3946-629X
DOI
10.55730/1300-011X.3479
Keywords
Halyomorpha halys, Nosema maddoxi, distribution, Türkiye, biological control
First Page
490
Last Page
498
Publisher
The Scientific and Technological Research Council of Türkiye (TÜBİTAK)
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
ERTÜRK, Ö, EKER, S, YAMAN, M, & ALGI, G (2026). Distribution and seasonal prevalence of Nosema maddoxi (Microsporidia: Nosematidae) in the brown marmorated stink bug, Halyomorpha halys (Hemiptera: Pentatomidae) populations in Türkiye. Turkish Journal of Agriculture and Forestry 50 (4): 490-498. https://doi.org/10.55730/1300-011X.3479