Trapping effects of five attractants on Monochamus alternatus carrying Bursaphelenchus xylophilus
To study the trapping effectiveness of various attractants on Monochamus alternatus carrying pathogenic levels of Bursaphelenchus xylophilus,five attractants:APF-Ⅰ(A),Shuiguang(B),F2(C),Zhongjie Sifang(D),and F8(E)were selected for comparison.The results showed that a high number of dead trees caused by pine wilt disease in pine forests led to an increase in M.alternatus population density.The severity of pinewood nematode disease was positively correlated with the population density of M.alternatus carrying B.xylophilus.For trapping M.alternatus with pathogenic levels of B.xylophilus,attractant A was most effective in forests with a high incidence of pine wilt disease,while attractants B and D showed better performance in forests with a low incidence.In controlling pine wilt disease,attractant A is recommended for areas with severe outbreaks,whereas attractants B and D are suited for areas with early outbreaks.Selecting attractants based on the disease incidence in different forest areas can effectively and accurately reduce the density of M.alternatus carrying pathogenic levels of B.xylophilus,which is crucial for controlling the development and spread of pinewood nematode disease.