种子气味对鼠类分散贮食行为及种子命运的影响

项目名称： 种子气味对鼠类分散贮食行为及种子命运的影响

项目编号： No.31470113

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 生物科学

项目作者： 易现峰

作者单位： 江西师范大学

项目金额： 30万元

中文摘要： 种子特征（如：大小、种皮厚度、营养成分、次生代谢物）在很大程度上影响鼠类的贮食行为进而决定种子的命运。然而，与这些物理化学特征密切关联的种子气味对鼠类分散贮食行为以及种子命运的影响还鲜见报道，鼠类分散贮食过程中与种子间的化学通讯机制也有待阐明。本项目以小兴安岭地区鼠类（花鼠、红松鼠和大林姬鼠）与植物种子间的关系为基础，以种子和鼠类间化学通讯为主线，基于种子气味组分的顶空/气相色谱-质谱分析，研究围栏和野外条件下鼠类的贮食行为，从而揭示：1）环境条件（水分和温度）如何调节种子气味并影响动物的分散贮食行为；2）种子是否通过相同的气味编码影响鼠类的贮食行为和种子命运以及不同鼠类是否依赖不同的气味组分分散贮藏种子并重新找回。项目旨在阐明种子与贮食动物间的化学通讯机制及其对动物分散贮食行为和种子命运的影响，进一步丰富种子扩散生态学以及协同进化理论。

中文关键词： 啮齿动物；种子气味；贮食行为；化学通讯；协同进化

英文摘要： Seed hoarding behaviour of rodents and seed fates are affected by seed traits, such as seed size, seed coat thickness, nutrition status and secondary compunds. However, we have little knowledge of the effect of seed odour mediated by seed physical and chemical traits on scatterhoarding behaviour. Moreover, it remains unclear how seed odour affects food hoarding by rodents and seed fates. Therefore, the mechanism of chemical communication between seeds and food hoarding animals is needed to be clarified. Therefore, we, based on the interaction between seeds and food hoarding animals (Siberian chipmunks, red squirrels and wood mice), focusing on the chemical communication between seeds and rodents, plan to conduct experiments in the enclosures and the field to anwser the following scientific questions with the aid of headspace/GC-MS analysis on seed odours: 1) How environments mediate emission of seed odours and hoarding behaviours? 2) How seed odour evolves under the selection pressure of food hoarding of animals? 3) Do different plant seeds affect food hoarding of animals and seed fates through similar or identical seed odour encodings， and do different animals hoard and recover their food items based on different seed odours? Our project is expected to uncover the mechanism of chemical communication between se

英文关键词： Rodent；Seed odour；Food hoarding behaviour；Chemical；Coevolution