中国森林病虫2025，Vol.44Issue(2)：48-51,4.DOI:10.19688/j.cnki.issn1671-0886.20250008
寄主搜索距离、接种比例和种间干扰对花绒寄甲寄生作用的影响
Influence of host-searching distance,inoculation proportion and interspecific interference on the parasitism of Dastarcus helophoroides
摘要
Abstract
To improve the release technology of Dastarcus helophoroides in field and biocontrol effect,parasitism rate and paralysis time of D.helophoroides on host were determined under different host-searching distances,inoculation proportions and interspecific interference in laboratory.The results showed that parasitism rates were no significant differences under different host-searching distances and inoculation proportions,but there was significantly lower under Sclerodermus alternatusi interference than no interference.Under interference,the parasitism rate was the lowest at the ratio of D.helophoroides to Thyestilla gebleri,2:1 or 8:1,with only 10%.The paralysis time of D.helophoroides on host was generally shortened with the increase of inoculation proportion,and paralysis time was 1 d when host-searching distance was zero;while the longest paralysis time was 2.5 d under S.alternatusi interference with 2:1 of D.helophoroides to T.gebleri.It was concluded that host-searching distance and inoculation proportion had no significant effect on parasitism of D.helophoroides,while interspecific interference could significantly reduce the parasitism rate.These findings could provide theoretical supports for management pests applying D.helophoroides in forest.关键词
花绒寄甲/生物防治/松褐天牛肿腿蜂/麻竖毛天牛/释放技术Key words
Dastarcus helophoroides/biological control/Sclerodermus alternatusi/Thyestilla gebleri/release technology分类
林学引用本文复制引用
路纪芳,赵斌,任雪敏,蔡静芸,王小艺..寄主搜索距离、接种比例和种间干扰对花绒寄甲寄生作用的影响[J].中国森林病虫,2025,44(2):48-51,4.基金项目
贵州省林业科研项目"贵州松褐天牛自然种群天敌昆虫种类调查及应用研究"(黔林科合[2022]31号) （黔林科合[2022]31号）
