Environmental manipulations were used to explore the effects of larval competition on the life history strategy of the bean weevil, C. maculatus.

• 试验中取有或无幼虫竞争经历之四纹豆象雌虫，提供寄主豆不足与充裕两种资源状况，以比较两者在成虫期生活史特徵表现上之差异。