English  |  正體中文  |  简体中文  |  Items with full text/Total items : 43312/67235
Visitors : 2021000      Online Users : 2
RC Version 5.0 © Powered By DSPACE, MIT. Enhanced by NTU/NCHU Library IR team.
National Chung Hsing University Institutional Repository - NCHUIR > 農業暨自然資源學院 > 昆蟲學系 > 依資料類型分類 > 碩博士論文 >  蘇鐵白輪盾介殼蟲天敵Cybocephalus flavocapitis Smith之生命表與其於台灣之分布

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/153032

標題: 蘇鐵白輪盾介殼蟲天敵Cybocephalus flavocapitis Smith之生命表與其於台灣之分布
Temperature-dependent development and distribution of Cybocephalus flavocapitis Smith (Copeopetra: Cybocephalidae) predator of Aulacaspis yasumatsui Takagi(Hemiptera: Diaspididae) , in Taiwan
作者: 莎安娜
Samayoa, Ana
Contributors: 黃紹毅
Shaw-Yi Hwang
昆蟲學系所
關鍵字: 蘇鐵屬;發育時間;有效積溫;發育臨界低溫;最大熵值;分布
Cycas;Development time;Degree-days;Thermal threshold;Maximum entropy;distribution
日期: 2012
Issue Date: 2013-11-18 11:47:23 (UTC+8)
Publisher: 昆蟲學系所
摘要: Cycas taitungensis Shen, Hill, Tsou & Chen (Cycadales: Cycadaceae) is an endangered species in Taiwan and it has been attacked by Aulacaspis yasumatsui Takagi (Hemiptera: Diaspididae), a mayor pest of Cycad plants. Its natural enemy, Cybocephalus flavocapitis Smith (Coleoptera: Cybocephalidae) development time was evaluated in this study, and egg duration, immature development time at five constant temperatures was also tested. Egg period ranged from 31 days at 15oC to 4 days at 35°C, no development was completed at 15 and 30°C. Immature development time ranges from 71 days at 20oC to 29 days at 30oC. Lower threshold temperature for all stages is between 11-15oC. For reach adulthood, 490 degree-days are necessary. Pre-pupae and pupae together are the longest period in which no predation occurs.
Occurrence data of C. flavocapitis and C. nipponicus at 34 localities were sampled in 10 counties across Taiwan. Five distribution maps were modeled using Maximum Entropy Modeling (Maxent). The number of C. flavocapitis collected is consistent with the Maxent model; Yilan and Kaohsiung are the counties with high percentage of better conditions and high number of beetles. Pingtung and Taichung counties have 57 - 91% of suitability and C. nipponicus was more abundant as well. The Taiwan Cycad Nature Reserve’s conditions are not favorable for C. nipponicus; the search of other control agents using predicting models, and evaluate the agent’s effectiveness must be done before the potential control agent is released.
Appears in Collections:[依資料類型分類] 碩博士論文

Files in This Item:

File Description SizeFormat
nchu-101-7099036021-1.pdf1813Kb230View/Open
index.html0KbHTML136View/Open


 


學術資源

著作權聲明

本網站為收錄中興大學學術著作及學術產出,已積極向著作權人取得全文授權,並盡力防止侵害著作權人之權益。如仍發現本網站之數位內容有侵害著作權人權益情事者,請權利人通知本網站維護人員,將盡速為您處理。

本網站之數位內容為國立中興大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用。

聯絡網站維護人員:wyhuang@nchu.edu.tw,04-22840290 # 412。

DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU/NCHU Library IR team Copyright ©   - Feedback