摘要
柑橘大实蝇对黄绿色球形物体具有强烈趋向性,根据这一特性开发的球形诱捕器已得到广泛应用.目前针对球形诱捕器防效的评价着重关注诱集的成虫数量,忽略了所诱集雌虫的产卵情况,这可能会导致评价结果与实际防效存在偏差.于重庆开州区对球型诱捕器在不同时间点(5月20日至7月7日期间,每3~4 d调查1次)及不同诱集点(果园边、果园内、近农舍果园边)诱集的柑橘大实蝇雌、雄成虫数量及雌成虫卵巢发育情况进行了观察分析.结果表明:球型诱捕器对雌、雄成虫均具有较好的诱集效果,其中雌虫227头,雄虫313头.前期诱集雄虫比例较高,后期诱集雌虫比例较高.解剖所有诱集到的雌虫,观察卵巢发育情况,发现148头(65.2%)雌虫未明显产卵,且部分前期诱集的雌虫甚至未达到性成熟;未明显产卵与已明显产卵的雌虫卵巢中,成熟卵量差异具有统计学意义;果园边诱集的成虫总数量(51.3头)、未明显产卵雌虫的比例(71.43%)均高于其他两类诱集点,且果园边最先出现诱集高峰.总体而言,应用球形诱捕器对柑橘大实蝇具有实际的防控意义,应从成虫羽化初期开始使用,并适当增加果园边界的诱捕器密度,为成虫进入果园设置屏障,从而降低果园内的虫口密度及雌虫产卵量.
The Chinese citrus fruit fly,Bactrocera minax(Enderlein),possesses strong taxis toward yellow green spherical objects,based on which the spherical traps have been developed and widely used.However,the current evaluation of control efficacy of spherical traps mainly focused on the number,but not the oviposition status,of attracted adults,probably leading to the deviation from the actual control efficacy.Therefore,in this study,the number of female and male B.minax adults and the ovarian developmental stage of female adults attracted by spherical traps at different time-points(an investigation every 3~4 d from 20 th May to 7 th July)and trapping locations(orchard boundary,inside orchard,and orchard boundary close to farmhouse)were investigated in Kaizhou district,Chongqing.The results showed that the spherical trap had good attractive effect to both female(227)and male adults(313).Higher percentage of male adults was trapped at the early stage of investigation,while higher percentage of female adults was trapped at the late stage.All attracted female adults were dissected to observe the ovarian developmental stage.It was found that 148 female adults(65.2%)had not obviously laid the eggs,and some of female adults attracted at the early stage were even not sexually mature.The number of mature eggs in the ovaries of female adults between obvious and unobvious oviposition was significantly different.The total number of adults(51.3)as well as the percentage of female adults with unobvious oviposition(71.43%)attracted at boundary were higher than those of at other two types of trapping locations.Additionally,the first trapping peak was observed at orchard boundary.In conclusion,application of spherical traps has practical meaning in prevention and control of B.minax,and ought to start to apply from the emergence of the adults.Moreover,the density of spherical traps at the orchard boundary is supposed to increase appropriately so as to set a barrier to hinder adults from entering into orchard,and thus reduce the pest dens
作者
王佳
冉莉琳
胡文召
彭洪波
刘映红
WANG Jia;RAN Lilin;HU Wenzhao;PENG Hongbo;LIU Yinghong(College of Plant Protection,Southwest University,Chongqing 400715,China;Chongqing Agricultural Comprehensive Administrative Law Enforcement Corps,Chongqing 400020,China)
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第12期56-64,共9页
Journal of Southwest University(Natural Science Edition)
基金
国家自然科学基金项目(32172393)
重庆市基础与前沿研究计划项目(cstc2018jcyjAX0516)
中央高校基本科研业务费项目(XDJK2018C092).
