Abstract: The energy,budget strategies during reproduction were reviewal based on both empirical theoretical literature,including the energy classification during ,the strategies of energy allocation in the reproduction and the energy trade-off during laction. The strategies allocation include optimality of time, improving the efficiency of assimilation,exploiting the storage and compensation in the energy budgets. In addition,the trade-off of energy allocation between parent and offspring as well as between litter size were analyzed. From the dynamic point of view,we thought that there is no one strategy which is not always optional for animals,different species could adopt different strategies under different situation to increase their fitness.

Key words: Energy strategy, Reproduction, Small mammals, Trade-off

摘要： 乳动物能世的分配及权衡，尤时无刘不体现于繁殖乃至生活史的各阶段。相应的生活史及繁殖对策构成了繁殖能量收支的基本理论 文章从繁殖期能量蝴分人手。综述了小哺乳动物繁殖期间的能量分配埘策及哺乳期的能量权衡：其中繁殖期闯的能量分配对策包括时间的优化分配 提高能量的同化效宰、利用体内储存及能量的补偿等对策。阐述了哺乳期的能量权衡主要对母体的能量权衡对策咀及后代的权衡理论，较系境地分析了母体与幼体以及幼体之间的能量权衡 这些繁殖能量对策是小哺乳动物长期自然选择的结果。任何单一的繁殖对策都不可能总是最优的，物种在不同的条件下会采取不同的对策适应环境。

关键词: 小型哺乳动物, 繁殖期, 能量, 对策：权衡