社會性昆蟲的費洛蒙有許多功用，是相當重要的化學物質。費洛蒙可用來區分個體，做為識別親緣的依據；也可以做為聚集或驅散群體的信號，或是路標指引方向。隨著社會行為的研究逐漸擴展到其他非真社會性昆蟲，蜚蠊這種可輕易取得的物種，也成為了研究對象。本研究目的在測試不同卵鞘孵化的蜚蠊，對自己群體的費洛蒙氣味是否能明確的辨識。藉由比較不同卵鞘孵化的美洲蜚蠊，取其糞便做為聚集信息素來源，進行選擇路徑與棲地的實驗。路徑選擇實驗結果顯示，只有蜚蠊卵鞘來源多寡，對選擇路徑的正確性有影響，來源多，正確選擇的次數低。在選擇通道前所花時間上比較，來源多者，花費較多時間在選擇上。棲地選擇實驗結果顯示，只有卵鞘來源的多寡對選擇路徑的正確性有影響，來源多，正確選擇的次數低。從本研究結果得知，美洲蜚蠊的卵鞘來源增加，蜚蠊在選擇路徑或棲地時較容易造成誤判。

Pheromones are important chemical substances for social insects. They could be used for individual recognition, group aggregation, dispersion or path direction. In this study, I used American cockroaches, of which social behavior has been documented, to test whether they could distinguish the pheromone odor of their own group. I manipulated the group composition of cockroaches by adding various number of individuals hatched from the same or different ootheca into the host group. By using the feces as the pheromone source, path and habitat selection experiments were performed to examine whether the selection was influenced by the manipulated group composition. Adding individuals hatched from different oothecae significantly reduced the correct selection rates in both experiments, and it also increased the time for decision-making in path selection experiment. The results suggest that groups containing members from multi-ootheca would lower its members’ judgment on own pheromone recognition.

論文審定書………………………………………………….…i
摘要……………………………………………………………ii
Abstract…………………………………………………….…iii
Contents……………………………………………………....iv
Table Legend………………………………………………….v
Figure Legend…………………………………………….…vii
Introduction…………………………………………………. 1
Materials and Methods……………………………………... 6
Results………………………………………………………..11
Discussion…………………………………………………....14
Literature Cited……………………………………………..19
Tables………………………………………………………...27
Figures…………………………………………………….…33

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