The biological activity of pine wood powder infected with Gloeophyllum trabeum on Odontotermes formosanus (Shiraki)
Author of the article:DING Fang1** JI Bao-Zhong1*** LIU Shu-Wen2*** ZHANG Xin-Wei1 YANG Jin-Jin1ZHAO Zheng-Ping1 WANG
Author's Workplace：1. Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China；2. The Administration Bureau of Dr. Sun Yat-sen’s Mausoleum, Nanjing 210014, China
Key Words：Gloeophyllum trabeum (Pers.) Murrill, Odontotermes formosanus (Shiraki), attractive substance, trail-following substance, extracting solution
Abstract：[Objectives] To study the attractivness of pine wood powder infected with Gloeophyllum trabeum (Pers.:Fr.) Murr to Odontotermes formosanus (Shiraki). [Methods] The attractiveness of extracts of pine wood powder infected with G. trabeum, and extracted with different solvents, to O. formosanus, was compared. Both general attractiveness and the rate of scent-trail following were assessed for each solvent. The effect of different concentrations of n-hexane and ethyl acetate extracting solutions on the attractiveness of extracts was also studied. [Results] n-hexane ranked highly in both general attractiveness and scent-trail following, whereas ethyl acetate, trichloromethane and acetone extracting solutions ranked highly in attractiveness but low in scent-trail following. Conversely, methanol and ethanol extracting solutions ranked high in scent-trail following but low in attractiveness. The linear relationship between n-hexane extracting solution concentration and scent-trail following rate can be expressed by the regression equation y = 12.561ln(x) + 50.11, and that between ethyl acetate extracting solution concentration and scent-trail following rate by y = 12.161ln(x) + 51.411. [Conclusion] Pine wood powder infected by G. trabeum is attractive to O. formosanus. n-hexane and methanol extracting solutions ranked highly in terms of scent-trail following and general attractiveness. There was a good correlation between the concentration of n-hexane and ethyl acetate extracting solutions and their attractiveness to O. formosanus.