Visual landmark-directed scatter-hoarding of Siberian chipmunks Tamias sibiricus
Visual landmark-directed scatter-hoarding of Siberian chipmunks Tamias sibiricus
复制标题
西伯利亚花栗鼠 Tamias sibiricus 的视觉地标定向分散囤积
DOI：
10.1111/1749-4877.12171
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发表时间：
2016
影响因子：
3.3
通讯作者：
Xianfeng Yi
中科院分区：
文献类型：
--
作者：
Dongyuan Zhang;Jia Li;Zhenyu Wang;Xianfeng Yi
缓存食物项目的空间记忆在分散囤积动物的缓存恢复中起着重要作用。然而，分散囤积动物是否有意选择环境中视觉地标的缓存位置，然后依靠它们来恢复缓存的种子供以后使用，还没有得到广泛的研究。此外，尽管雄性和雌性动物表现出不同的空间能力，但缺乏证据表明小型啮齿动物基于视觉地标的食物囤积行为是否存在性别差异。在本研究中，我们使用了一种分散囤积动物，西伯利亚花栗鼠，Tamias sibiricus在半自然的围栏中探索这些问题。结果表明，T.西伯利亚虎喜欢在有视觉标志物（樟子松树枝、短叶冷杉树叶和PVC管）的浅坑中建立贮藏所。此外，P.西尔维斯特里斯通过T拜特促进了缓存恢复。西伯利亚虎我们还发现西伯利亚花栗鼠基于视觉地标的食物囤积策略存在显著的性别差异。雄性，而不是雌性，花栗鼠倾向于建立他们的缓存方面的视觉地标。我们的研究表明T.西伯利亚花栗鼠依赖视觉标志建立和恢复食物贮藏，且在基于视觉标志的食物贮藏中存在性别差异。
Spatial memory of cached food items plays an important role in cache recovery by scatter‐hoarding animals. However, whether scatter‐hoarding animals intentionally select cache sites with respect to visual landmarks in the environment and then rely on them to recover their cached seeds for later use has not been extensively explored. Furthermore, there is a lack of evidence on whether there are sex differences in visual landmark‐based food‐hoarding behaviors in small rodents even though male and female animals exhibit different spatial abilities. In the present study, we used a scatter‐hoarding animal, the Siberian chipmunk,Tamias sibiricusto explore these questions in semi‐natural enclosures. Our results showed thatT. sibiricuspreferred to establish caches in the shallow pits labeled with visual landmarks (branches ofPinus sylvestris, leaves ofAthyrium brevifronsand PVC tubes). In addition, visual landmarks ofP. sylvestrisfacilitated cache recovery byT. sibiricus. We also found significant sex differences in visual landmark‐based food‐hoarding strategies in Siberian chipmunks. Males, rather than females, chipmunks tended to establish their caches with respect to the visual landmarks. Our studies show thatT. sibiricusrely on visual landmarks to establish and recover their caches, and that sex differences exist in visual landmark‐based food hoarding in Siberian chipmunks.