國立臺灣大學昆蟲學系暨研究所洪淑彬2006-07-252018-06-292006-07-252018-06-292002http://ntur.lib.ntu.edu.tw//handle/246246/12575有關豆象的研究指出，豆象雄蟲交尾 時所傳遞的物質中包含營養物質，而該營 養物質由雌蟲吸收後，會轉而貢獻到蟲體 及生殖組織上，因而使得雌性壽命、生殖 力及所產子代品質增加。而雄性提供之營 養物質的量在個體之間有差異，其會受雄 性個體體型大小所影響。由於雄蟲之體型 大小使得其所能提供之營養物質在量上 面有所變化，進而使得未來與其交尾之雌 蟲獲益程度不同，故豆象雌蟲在遭遇不同 特性如體型大小之雄蟲時，是否會表現出 雌性選擇，是值得探討的。本試驗以綠豆 象為試驗對象，藉由提供綠豆象雌蟲不同 體型大小雄蟲之組合，透過行為觀察紀 錄，嘗試了解不同體型大小之雄蟲所提供 之效應，對交尾行為、交尾結果及雌蟲生 殖力的影響。由試驗結果來看，綠豆象雌 蟲對生殖力、子代品質及交尾行為之影響 力較大;雄蟲之體型大小對生殖力、子代 品質、交尾偏好及交尾行為無任何影響。 然而雄蟲在求偶行為的表現上有差異，此 差異會影響交尾時間的長短，進而影響雌 蟲之生殖力。由交尾成功與否在拒絕行為 上的差異，可看出綠豆象雌蟲似乎有表現 出雌性選擇，而雌蟲選擇配偶的標準與雄 蟲之體型大小無關，可能是其他雄性特 質，如雄蟲的求偶能力，或其他未檢驗之 雄性因子。The studies on animals indicated that their life history and reproductive strategy could be affected by some male traits, such as male body size, when such traits actually influence female fecundity, longevity, offspring quality or mating behavior. Studies of seed beetle indicated that the male transfers considerable nutrients to the female via ejaculates. Such nutrients are incorporated into female’s somatic and reproductive tissues, which in turn increase female’s longevity, fecundity and offspring quality. Male’s nutritive contribution can vary with male size and thus it may vary considerably among individuals. Because the amount of nutrient that females received may be influenced by body size of males they mated with, females may benefit in several ways by discriminating different males, that is, females may exhibit “female choice”. In this study, we examined the influence of male body size of adzuki seed beetle, Collosobruchus chinensis, on mating success, mating behavior and female fecundity. Our results showed that, female’s body size of adzuki seed beetle represented a major influence on lifetime fecundity, offspring quality and mating behavior. While male body size showed little or no effects on female fecundity, offspring quality and mating behavior. However, the courtship behavior showed considerable variation among males, and the courtship duration was positively correlated with mating duration. This result indicates that male behavior may influence female fecundity by affecting the persistence of mating. On the other hand, the analysis of rejection behavior showed a significant difference between mating or non-mating pairs, which implied female choice exists in the mating decision. The representation of female choice was not affected by male body size, instead, it may be influenced by other male traits, such as male courtship ability, or other male effects which remains to be explored.application/pdf112814 bytesapplication/pdfzh-TW國立臺灣大學昆蟲學系暨研究所豆象雄蟲體型雌性選擇交尾行為male body sizemating behaviorseed beetlefemale choicereporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/12575/1/902313B002336.pdf