TY - JOUR A1 - Kereselidze, Manana A1 - Pilarska, Daniela A1 - Linde, Andreas A1 - Sanscrainte, Neil D. A1 - Hajek, Ann E. T1 - Nosema maddoxi infecting the brown marmorated Stink bug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), in the Republic of Georgia JF - Biocontrol Science and Technology N2 - Halyomorpha halys is an invasive, polyphagous stink bug from Asia, first reported attacking hazelnut orchards in the Republic of Georgia in 2015. A microsporidian pathogen discovered in Georgian H. halys has been identified as Nosema maddoxi by sequencing the ribosomal small subunit gene. Nosema maddoxi is native to North America and has also been found in China and South Korea; in North America it infects native stink bugs and H. halys. Investigations were carried out during different seasons in three regions of West Georgia in 2018–2019. The highest prevalence of N. maddoxi was detected among overwintered adults collected in May in the Guria region. KW - Microsporidia; entomopathogen; invasive species; natural enemy Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-4942 SN - 0958-3157 SN - 1360-0478 VL - 30 IS - 10 PB - Taylor & Francis ER - TY - CHAP A1 - Kereselidze, M. A1 - Pilarska, D. A1 - Ujmajuridze, L. A1 - Linde, Andreas A1 - Guntadze, N. A1 - Hajek, A. T1 - Seasonal prevalence of Nosema maddoxi infection in Halyomorpha halys, an invasive pest of hazelnut orchards in Georgia T2 - Acta Horticulturae N2 - The prevalence of the microsporidium Nosema maddoxi in populations of brown marmorated stink bug (Halyomorpha halys) from three sites in Guria and eight sites in Samegrelo, Georgia is described. Investigations were conducted on adults collected in fall and spring from fall 2020 to spring 2022. The prevalence of infection differed by both region and season. Total prevalence of N. maddoxi in adults from the Guria region was significantly higher than the Samegrelo region. Infection levels in fall were higher than in the spring in the Guria region, but inconsistent over seasons in the Samegrelo region. Infection levels did not differ by sex. We hypothesize that higher population densities and more adult aggregation in Guria compared with Samegrelo helps to explain the higher infection levels in Guria. KW - invasive species; microsporidia; entomopathogen; biological control; Hemiptera Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-8283 SP - 449 EP - 454 ER -