Studies of Emerge Emigration of Monochamus alternatus and Its Ability of Carrying Nematode

The pine sawyer (Monochamus alternatus Hope) is themajor transmitting vector of the pinewood nematode, Bursaphelenchus xylophilus Nickle.The studies of emerge emigration reqularity of the pine sawyer and its ability of carrying nematode have important significance in populationmonitoring and their integrated control.The results showed that:in average,the annual emerge emigration period and its peak period were 82.0 d and 12.3 d respectively.The whole body of the pine sawyer can carry pine wood nematode.The quantitative ratio is in the order as follows:thoraxheadabdomenantennafootwing.In Fuyang,Zhejiang Province,the adults of pine sawyer were trapped by attractant.The results showed 2900 nematodes were carried by a pine sawyer in average.The amount of nematode carried by female was 2.6 times asmuch as that bymale.There were two peakes in the quantitative ratio of the pine sawyer carrying pinewood nematode during the trapping period.