荔枝蒂蛀虫在荔枝果实上的产卵部位选择及其影响因素研究  

Oviposition site selection and its influencing factors of the litchi fruit borer,Conopomorpha sinensis Bradley(Lepidoptera:Gracillariidae)on litchi fruit

作　　者：董易之[1] 全林发 徐淑[1] 李文景 姚琼[1] 陈炳旭[1] DONG Yi-zhi;QUAN Lin-fa;XU Shu;LIWen-jing;YAO Qiong;CHEN Bing-xu(Institute of Plant Protection,Guangdong Academy of Agricultural Sciences/Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China,Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of High Technology for Plant Protection,Guangzhou,Guangdong 510640,China)

机构地区：[1]广东省农业科学院植物保护研究所/农业农村部华南果蔬绿色防控重点实验室/广东省植物保护新技术重点实验室,广东广州510640

出　　处：《南方农业学报》2023年第2期347-355,共9页Journal of Southern Agriculture

基　　金：国家现代农业产业技术体系(CARS-32);广东省荔枝产业技术体系创新团队项目(2022KJ107);广东省乡村振兴战略专项(403-2018-XMZC-0002-90)。

摘　　要：【目的】揭示荔枝蒂蛀虫在荔枝果实上的产卵部位选择以及影响其选择的因素,为荔枝蒂蛀虫产卵行为调控及防控技术研究提供科学依据。【方法】通过室内测定和田间调查,比较荔枝果实表面各个区域的荔枝蒂蛀虫落卵量;通过产卵选择试验,探究荔枝果表不同区域的产卵引诱作用,以及形状和气味等因素对荔枝蒂蛀虫在荔枝果实上产卵部位选择的影响。【结果】在荔枝果实上,荔枝蒂蛀虫偏好在果蒂附近区域产卵,该区域的落卵量占整个果实落卵量的65.87%~90.29%。荔枝果表不同区域的气味均可引诱荔枝蒂蛀虫产卵,其中果蒂至果肩区域气味的产卵引诱作用最强。形状和表面纹理结构对荔枝蒂蛀虫的产卵部位选择无明显影响,在荔枝果蒂和果顶的形状和表面纹理结构趋于一致的条件下,荔枝蒂蛀虫仍偏好在果蒂附近区域产卵,该区域的落卵量占比达72.28%~75.23%。产卵引诱物气味浓度对荔枝蒂蛀虫产卵选择有明显影响,成虫趋向在气味浓度较高的部位产卵。在不同的产卵介质上,产卵引诱物气味浓度越高,荔枝蒂蛀虫落卵量越多;而在同一产卵介质的不同位置上,成虫则偏好在产卵引诱物气味较浓的位置产卵。果蒂和果顶的气味也表现出相同的情况,在果顶气味浓度不变的条件下,荔枝蒂蛀虫对果蒂的产卵选择性随着果蒂气味浓度减小而减弱;当果蒂的气味浓度减小至一定水平时,荔枝蒂蛀虫偏好在果蒂产卵的习性会发生改变,而多选择在果顶产卵。【结论】在荔枝果实上,荔枝蒂蛀虫偏好在果蒂附近区域产卵。该虫对产卵引诱物气味浓度有产卵选择性,偏好在气味较浓的位置产卵。推测果蒂附近区域气味较浓是荔枝蒂蛀虫趋向在果蒂产卵的重要原因之一。【Objective】In this study,the oviposition site of litchi fruit borer(LFB),Conopomorpha sinensis Bradley adults on litchi fruit surface and the influencing factors were investigated to provide scientific basis for the regulation and control of oviposition behavior of LFB.【Method】Through laboratory test and field investigation,the amount of eggs of LFB on litchi was compared in different regions of litchi fruit surface.The oviposition selection experiment was conducted to investigate the oviposition attraction effects of different regions of litchi fruit surface and the influence of shape and odor on oviposition selection of LFB on litchi fruit surface.【Result】The results of laboratory test and field investigation showed that LFB adults tended to lay eggs on the litchi fruit pedicle,and the number of eggs laid on this region accounted for 65.87%-90.29%of total eggs laid on the whole fruit.The odors of different regions of the fruit surface could induce LFB adults to lay eggs,of which the odor of the region from the fruit pedicle to the fruit shoulder had strongest induction effect.The shape and surface texture had no obvious effect on oviposition site selection of LFB.When the shapes and surface textures of the litchi fruit pedicle and apex were made to be equal,LFB adults still laid much more eggs near the litchi fruit pedicle,accounting for 72.28%-75.23%of total eggs laid on the whole fruit.The odor concentration of oviposition attractant had obvious effect on oviposition site selection of LFB,and adults tended to lay eggs in the site with higher odor concentration.Among different ovipositon media,the higher odor concentration of oviposition attractant was inside the medium,the more eggs were laid by the LFB adults on the medium surface.Moreover,among different positions of the same oviposition medium,LFB preferred to lay eggs on the position where the odor of the oviposition attractant was stronger.The same situation was observed for the odor of the litchi fruit pedicle and apex.When the odor concentr

关 键 词：荔枝蒂蛀虫 荔枝果实 产卵部位选择 气味 

分 类 号：S436.67[农业科学—农业昆虫与害虫防治]