Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/30622
標題: 布袋蓮象鼻蟲(Neochetina eichhorniae Warner)生活史及寄主專一性
Life History, and Host Specificity of Neochetina eichhorniae rner
作者: 陳弘煜
Chen, Hon-Yi
關鍵字: Waterhyacinth;布袋蓮;Neochetina eichhorniae Warner Life history;Host specificity;布袋蓮象鼻蟲;生活史;寄主專一性
出版社: 昆蟲學系
摘要: 
布袋蓮象鼻蟲之發育期有卵、 1齡、2齡、3齡幼蟲及蛹期,卵發育至成蟲
需72.5天,幼蟲頭殼寬度隨其齡期之增加而遞增。論雌性或雄性均偏好葉
腹面及葉柄細頸部。雌成蟲之平均每日 卵量隨溫度之升高而增加。其於
黑暗期之食痕數及背光部位之取食數高於光照期。雌成蟲取食痕數極顯著
高於雄蟲,而兩怬’n喜食葉細頸部。測定布袋蓮象鼻蟲成蟲寄主專一性
結果示僅對油菜、白菜、甘藍、結球白菜、美人蕉等有真正取食H,其
餘33種植物均不取食或僅嘗試囓食,僅於白菜幼株上兩粒但無孵化,另移
入幼蟲發育、生長、且均在3 天內死h重選擇測定顯示象鼻蟲只對布袋蓮
葉呈正反應。

The developmental stages of Neochetina eichhorniaeclude egg,
larval 1, larval 2, larval 3 and pupal stages.otal of 72.5 days
is required for agg molting intoult. The width of head capsul
of larva is increasedts developmental instar. The adult prefers
feedingr leaf surface and upper leaf-petiole by its largerof
feeding scars found on these two portions. Dailyuctivity,
estimated by number of egg laid per femaleenhanced with the
increase of rearing temperature。hototaxis for the adult
weevils and a highers the scotophase were found andthe female
feedsdoes from their feeding scars, and both sexeson upper-
portion of leaf-petioles. Starvationnt species shows that N.
eichhorniae is verypecies. The multi-choice test on the
responsese plant leaf materials to their juices showedils only
responded to the waterhyacinth leaves.N. eichhorniae was a high
host specific andcies to waterhyacinth.
URI: http://hdl.handle.net/11455/30622
Appears in Collections:昆蟲學系

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