松墨天牛成虫补充营养期间传递线虫的特点

通过室内饲养和统计分析,研究松墨天牛成虫传递松材线虫的数量特征.试验按照单树种枝条饲养和5种树种枝条混合饲养设计.结果表明,成虫在寄主上传递线虫数量的多少与寄主的种类无关,成虫传递线虫是随机的;从成虫传递线虫数量的时间动态看,大多数时间段之间(2 d)成虫传递线虫数量差异不显著.成虫传递的线虫数量和它的取食量相关性不大;成虫传递线虫数量的高峰时段一般在成虫出孔20 d以后.

Transmitting Characteristics of Bursaphelenchus xylophilus by Adults Monochamus alternatus During Extra-nutrition Feeding

The transmitting characteristics of Bursaphelenchus xylophilus by adults Monochamus alternatus were investigated based on laboratory feeding. To examine the relationship between number of transmitted Bursaphelenchus xylophilus and host species,two feeding projects were tested,one was fed on branches from one species,the other on mixture branches from five species.The results showed that Bursaphelenchus xylophilus were randomly transmitted and the number of transmitted nematodes had no relationship with host species.The number of transmitted nematodes had no significant difference among test duration (2 days each).No obvious correlation was found between the number of transmitted nematodes and intake feeds.The peak of transmitted nematodes appeared around 20 days after adults left host tree.