1. investigated the presence of four parasites and their 34 subspecies in commercially produced bumblebees collected from ares close to greenhouses and 35 reported Crithida to be the most common parasite. However, no C. bombi was observed in non 36 of the studied populations in thepresent study;N Bombi;Slovenia were,2013
2. Although L. buchneri was observed in bee samples collected from 61 commercial companies even at low frequency, no L. buchneri was detected in bee samples 62 obtained from the vicinity of greenhouses. This suggests that the bumblebees escaping from the 63 greenhouses were not infected with the parasite or that the parasite could not survive in the 64 natural environment. A study conducted by Plischuk et al. (2013) shows similarity the results 65 of the present study in terms of spread rate of the L. buchneri. However, Arishmendi et al. 66 (2016) detected higher prevalance of L;our study