Breeding site segregation and Dutch elm disease fungi carriage percentage of three bark beetle species (Scolytus esuriens, S. chikisanii, and S. japonicus) in a Japanese elm tree in Hokkaido, Japan

In Japan, three bark beetle species, namely Scolytus esuriens, S. chikisanii, and S. japonicus, have been recently identified as new vectors of Dutch elm disease (DED), although their detailed bree...