What Is the Oviposition Decision Rule by Bean Weevil, Callosobruchus Maculatus?

基於四紋豆象雌蟲的產卵行為係在選汰過程中，為減低幼蟲的競爭作用並使其適應值最佳化而發展的假設。首先建立一動態規畫模式以分析此種豆象的產卵行為。接著進行蒙第卡羅模擬，以比較具不同幼蟲競爭程度時，最佳化雌蟲與採行絕對法則或相對法則雌蟲的產卵行為過程。除比較採行上述各種產卵策略的雌蟲對具不同卵數寄主豆的接受機率及累積產卵數外，並以其適應值來比較自然選汰對不同產卵策略之作用。分析模式所得的資訊，經由試驗資料驗證，將可探明四紋豆象採行何種策略產卵，並明瞭此行為發展之原因。

關鍵字

動態規畫；模擬

並列摘要

The oviposition decision of the female bean weevil is assumed to minimize the effects of larval competition and to maximize her lifetime fitness. A dynamic, stochastic model is proposed for bean weevil oviposition behavior analysis in terms of fitness maximization. The behavioral processes of the optimal females with varied levels of larval competition and females using other strategies (one absolute and two relative rules selected here) were simulated with the Monte Carlo simulation. The accepting probability of beans with varied egg loads, and the cumulative number of eggs laid by females using distinct strategies were compared. Lifetime fitness was used to analyse the effect of natural selection on the oviposition behavior of bean weevil. The real rule used by the bean weevil can be explored by comparing experimental data with this information.

並列關鍵字