黄野螟天敌螳螂的筛选研究
2021-07-16肖宁王祥林思诚卜蜜源陈全武刘卫宏
肖宁 王祥 林思诚 卜蜜源 陈全武 刘卫宏



摘要 在室内研究了5种螳螂捕食黄野螟幼虫及人工饲养的情况。结果表明,广斧螳成虫对黄野螟3~4龄幼虫的日捕食量最大,最高可达6头/只,与其他4种螳螂之间存在显著差异;随着黄野螟幼虫密度的增大,螳螂的捕食量会显著增大,但达20头/盒时,捕食量不再出现显著增大;综合比较日捕食量、产卵鞘量、卵期、初孵若虫量、成活率等指标,筛选出广斧螳为黄野螟的优势天敌昆虫。
关键词 黄野螟;天敌;螳螂;筛选
中图分类号 S-476 文献标识码 A
文章编号 0517-6611(2021)12-0165-02
doi:10.3969/j.issn.0517-6611.2021.12.042
开放科学(资源服务)标识码(OSID):
Study on Selecting of Natural Enemy Mantis of Heortia vitessoides
XIAO Ning,WANG Xiang,LIN Si cheng et al (Maoming Institute of Forestry Science,Maoming,Guangdong 525000)
Abstract The predation on Heortia vitessoides Moore larvae and artificial feeding of 5 species of mantises were studied in laboratory.The results showed that the daily predation of Hierodula patellifera Serville adults to the 3rd and 4th instar H.vitessoides larvae was the largest,up to 6 larvae per day, which was significantly different from the other 4 species of mantises.With the increase of the density of H.vitessoides larvae, the predation increased significantly, but when the density reached up to 20 larvae per insect box, the predation did no longer increase significantly;comprehensively comparing the daily predation, the egg sheath, the egg period, the amount of initial nymph, the survival rate,H.patellifera was selected out as the dominant natural enemy insect of H.vitessoides.
Key words Heortia vitessoides;Natural enemy;Mantis;Select
近年來,受土沉香产业经济效益的影响,人工种植的土沉香面积不断增加,寡食沉香叶片的黄野螟(Heortia vitessoides Moore)的发生数量也急剧增加,在局部范围还暴发成灾[1],化学药剂防治黄野螟虽然有一定的效果,但农残、对环境不友好等副作用逐渐成为制约沉香产业绿色发展不可忽略的因素,因此,利用天敌进行生物防治被认为具有较好的应用前景,国内也陆续报道了黄野螟天敌利用的研究情况[2-6]。为了较好地利用天敌资源,对黄野螟进行科学有效的控制,笔者在对茂名地区黄野螟天敌昆虫资源调查的基础上[7],对几种螳螂捕食黄野螟幼虫及人工饲养进行了观察,筛选出优势螳螂,为林间应用提供理论依据。
1 材料与方法
1.1 材料
供试的几种螳螂采自茂名地区包括电白、化州、高州等区域的沉香林地,分别是棕静螳Statilia maculata Thunberg,1784、中华大刀螳Tenodera sinensis Saussure,1842、广斧螳Hierodula patellifera Serville,1839、壮菱背螳Rhombodera valida Burmeister,1838、云眼斑螳Creobroter nebulosa Zheng,1988。……
