Transgenic bt cotton mainly affect high - instar larvae by retarding the growth and intering the proceeding of ecdysis, pupation, and eclosion. the growth retardation leads to the postponement of growth period duration ( the showed that growth period duration prolonged 17 days ). feeding the larvae with the tissue of the transgenic bt cotton and the moths with the flower of transgenic bt cotton, the number of eggs and hatching rate decreased obverviously
轉基因藥防田中，天敵昆亞群落的個體數占整個昆蟲群落總個體數的10 . 0 % ，其優勢種為蜘蛛類、七星瓢蟲（ coceinellas叩te即uneitatalinnaeus ） 、龜
紋瓢蟲（ prol ， laea少只ponjcagoeze ） 、大眼
蟬長蜷（ prqp . ylaeajaponicagoeze ）和草嶺（助rys叩asepre即unetatawesmael ） 。
Two important virus diseases, maize dwarf mosaic and stunt, both transmitted by leaf hoppers
另外兩種重要的病毒性疾病分別是玉米嵌
紋病毒和萎縮性黑穗病，都是通過葉
蟬傳播。
In the insect community of lichee orchard, the main dominant phytophagous insects are the olethreutes leucaspis meyrick, thalassodes quadraria guen6e, conopomorpha sinensis bradley, tessaratoma papillosa ( drury ), aceria litchii ( kiefer ), dasineura sp., xylebonts fornicatus eichhoff, prodenia litvara fabricius, empoasca flavescens ( fab. )
深圳市荔枝園昆蟲群落中，植食類群主要優勢種為三角新小卷蛾、樟翠尺蛾、荔枝蛀蒂蟲、荔枝蝽、荔枝癭蟎、荔枝葉癭蚊、茶材小蠹、斜紋夜蛾、小綠葉蟬。
