| Summary: Calosoma sycophanta L. (Coleoptera, Carabidae) is reared in insect rearing laboratories and released to forest infested by Thaumetopoea pityocampa (Den. & Schiff., 1775) Thaumetopoea wilkinsoni Tams, 1924 (Lepidoptera: Notodontidae). However, this predator is infected by microorganisms. This is the main factor effecting mast production of C. sycophanta. In this study, the bacterial pathogens of C. sycophanta in the rearing laboratories in the years 2015-2018 were studied. During three years 302 bacterial isolates were isolated and identified using VITEK bacterial identification systems. All pathogens were recorded from the predatory beetle in the rearing laboratories for the first time. The majority of identified species were entomopathogenic species. Six most isolated bacteria were further identified using 16S rDNA analysis and tested for insecticidal potential on the larvae and adults of C. sycophanta. All of them were found to be pathogenic on the adults or larvae. Streptomyces albogriseolus, Proteus penneri have % 33,33 and % 29,52 mortality on the C. sycophanta adults, respectively. S. albogriseolus, P. penneri, P. vulgaris, P. putida, P. rettgeri and P. vermicola have % 29,41, % 26,66, % 40, % 24, % 20 and % 20 mortality on the C. sycophanta larvae, respectively. Results show that the rearing laboratories are under the risk of bacterial diseases in the term of mass production of C. sycophanta
Key Words: Bacteria, Calosoma sycophanta, Coleoptera, Thaumetopoea pityocampa |
