【摘要】 为了增强花绒寄甲对松材线虫病的媒介昆虫松褐天牛搜索和寄生能力,本文研究了花绒寄甲在实验室条件下的产卵行为、产卵量及对松褐天牛幼虫的寄生作用。结果表明,花绒寄甲成虫能被松褐天牛幼虫诱集并产卵,产于紧邻松褐天牛幼虫的卵卡内;卵成扇形排列,每扇面卵量在26-115粒;卵"米"粒形,长1mm,直径0.2mm。大个体花绒寄甲成虫平均产卵135.88粒/头,中个体平均产卵70.50粒/头,小个体平均产卵33.68粒/头,产卵量大个体:中个体:小个体=4.03:2.09:1。花绒寄甲卵孵化后即可对松褐天牛幼虫进行寄生,寄生率达90%。更多还原

【Abstract】 In order to increase the parasitic rate for the Dastarcus helophoroides to the vector Monochamus alternatus which carry the nematode(Bursaphelenchus xylophilus),this paper,using a new test device studied the behavior and numbers of the Dastarcus helophoroides beetle’s laying egg and its first-instar larvae parasitism on the larvae of M.alternatus in the device.The results showed that beetle can be attracted by the larvae of M.alternatus to lay eggs on the paper board close to the attractive device.Eggs piled up fan-shaped arrangement,with 26-115 eggs per fan.Egg is "rice" shape,length 1mm,diameter of 0.2 mm.Big beetle has an average of 135.88 eggs per beetle;middle ones 70.50 eggs,small ones 33.68 eggs.The conclusion is that the beetle can be attracted by the larvae of M.alternatus to lay eggs.The bigger beetles have more eggs,which is Large:Middle:Small=4.03:2.09:1.The first instar larvae of D.helophoroides have a strong ability to parasitize larvae of M.alternatus,and the parasitic rate is to 90%.更多还原