Thirty-five lepidopteran species in 12 families were investigated for the presence of microsporidia in Bulgaria from April 2009 to June 2012. Infections caused by microsporidia in the genera Nosema and Endoreticulatus were identified in Tortrix viridana, Operophtera brumata, Archips xylosteana, Orthosia cerasi, Orthosia cruda and Eilema complana. The prevalence of Nosema spp. was low in host species: 0.3% for T. viridana, 2.1% for O. brumata, 2.4% for O. cerasi, 2.7% for Archips xylosetana and 3.3% for O. cruda, respectively. Spores of Endoreticulatus sp. were observed in 13.5% of collected E. complana. The spores of Nosema in O. brumata were localized in host fat body and phylogenetic studies showed that this microsporidium is relatively distantly related to .Nosema wistmansi, and the genera Orthosomella and Cystosporogenes. It is, however, closely related to Nosema thomsoni. Nosema sp. found in Orthosia cruda was detected in the silk glands of host larvae. Phylogenetic analysis confirmed that the microsporidium observed in the gut epithelium of E. complana belongs to the genus Endoreticulatus; however, it is not identical to other Endoreticulatus spp. described from Lepidoptera.
|Original language||English (US)|
|Title of host publication||2014 International Congress on Invertebrate Pathology and Microbial Control and 47th Annual Meeting of the Society for Invertebrate Pathology, August 3-7th, 2014, Mainz, Germany|
|State||Published - 2014|