补充营养材料对松褐天牛雌成虫繁殖力的影响

Impacts of Adult Feeding Materials on Female Reproduction Capacity of Monochamus alternatus Hope

2001年于浙江象山以不同年龄马尾松枝为补充营养材料,对松褐天牛雌成虫繁殖力进行室内笼养试验。结果显示,补充营养材料对松褐天牛雌成虫繁殖力存在显著影响,这种影响主要通过影响雌成虫寿命、平均产卵前期、日均产卵量及卵的孵化来实现,其中最重要的影响因素是雌成虫寿命和日均产卵量。除马尾松当年生枝条饲养日均产卵量大于混合枝饲养外,单龄级枝条饲养各项指标均小于混合枝饲养,并随饲养单龄枝枝龄增加而显著降低。各指标综合作用的结果表现为,每头雌成虫实际子代幼虫数量随饲养枝龄增加而减少,即为82 07头(混合枝)、76 62头(当年生枝)、8 82头(2年生枝)和0 16头(3年生枝)。

Impacts of adult feeding materials on female reproduction capacity of the Japanese sawyer,Monochamus alternatus Hope,major vector of the Pine Wilt Disease,were investigated through rearing experiments in 2000-2001 in Xiangshan,Zhejiang Province.The Results showe that there is a comprehensive impact on adult female reproduction capacity of the sawyer.Indexes related with female reproduction,such as preoviposition period,female life span,eggs laid in 24 h,and rate of egg hatchment,are all got affected,of which the life span of adult female and eggs in 24 h are the most important affected indexes.When fed with current grown Pinus masoniana branches,all the abovementioned indexes get decreased compared with those fed with mixed branches,and decreases with the age of branches in general.The result of the comprehensive impact is that the average number of progeny per female decreases with the age of feeding branches,82.07 with mixed branches,76.62 with current grown branch,8.82 with twoyear branch,and 0.16 with threeyear branch respectively.