Current status of Harmful Termites (Isoptera) in Hoi An Ancient Town and Effectiveness of Control of Main Harmful Coptotermes with Bait BDM 10

Abstract

The results of investigations and assessments about termites damagging 178 buildings in the Hoi An ancient town identified 6 species of 2 genera and 2 families. In which, Coptotermes was dominant genus with 4 species, and Cryptotermes had 2 species. There were 102/178 investigated buildings being invaded by termites with various levels. There were 4 species identified as major pests for the Hoi An ancient town. The most dangerous termite species for building was Coptotermes gestroi, followed by Coptotermes formosanus, C. ceylonicus and Cryptotermes domesticus. 77 works which were invaded by Coptotermes had been treated with BDM10 bait. The results showed that the efficiency of termite treatment reached 100% in all of works, in which: 78.11% of the works had achieved the control effect just for the first treatmen; 19,39% of the works needed to be treated for the second time and only 2.5% of the works that were severely damaged, needed  the third time for control with bait.