应用生态学报2013，Vol.24Issue(8)：2325-2332,8.
啮齿动物对不同大小和种皮特征种子的取食和搬运
Predation and removal of rodents on the seeds with different size and pericarp traits
摘要
Abstract
A field survey was conducted in the Quercus wutaishanica shrubs in Liupan Mountains of Ningxia,Northwest China to study the predation and removal of rodents on the seeds of Q.wutaishanica,Prunus salicina and Pinus armandii,aimed to explore the effects of seed size and pericarp traits on the predation and removal behaviors of rodents.The in situ seed predation rates of smaller Q.wutaishanica seeds and P.armandii seeds were significantly higher than those of larger Q.wutaishanica seeds and P.salicina seeds.The P.salicina seeds with hard and thick pericarp (endocarp) had the highest predation rate and hoarding rate after the removal by rodents.The movement distance of larger Q.wutaishanica seeds during predation events was the longest (3.10 m),and the seed hoarding distance of this species (6.48 m) was significantly longer than that of the three other types of seeds.Over 80％ of sites were used as the predation sites by rodents for the seeds,except that the P.salicina seeds contained only a single seed and the cache sites contained a single seed accounted for over 90％ for all types of seeds.Few predation and cache sites containing over two seeds were detected.Higher proportion of P.armandii seeds were predated in microhabitats except at the base of shrubs and in the holes after removal by rodent,while the seeds of other three types were predated mainly at the base of shrubs and in the holes after removal by rodents.The seed hoarding patterns after removal by rodents were primarily determined by pericarp traits,and higher proportion of soil burial that the rodents hoarded seeds with hard pericarp (endocarp) was detected.关键词
种子大小/种皮特征/种子命运/分散贮藏/六盘山区Key words
seed size/pericarp trait/seed fate/scatter hoarding/Liupan Mountains分类
生物科学引用本文复制引用
周立彪,闫兴富,王建礼,周云峰..啮齿动物对不同大小和种皮特征种子的取食和搬运[J].应用生态学报,2013,24(8):2325-2332,8.基金项目
宁夏财政厅林业新技术引进及推广项目([2012]05)、国家自然科学基金项目(30960087)和宁夏高等学校研究生教育创新计划项目(A09008)资助. （[2012]05）
