Spatial memory during foraging in prosimian primates:: Propithecus edwardsi and Eulemur fulvus rufus
Spatial memory during foraging in prosimian primates:: Propithecus edwardsi and Eulemur fulvus rufus
复制标题
DOI：
10.1159/000112911
复制
发表时间：
2008-01-01
影响因子：
1.9
通讯作者：
Overdorff, Deborah J.
中科院分区：
文献类型：
--
作者：
Erhart, Elizabeth M.;Overdorff, Deborah J.
各种各样的类人猿从一种食物来源高效地移动到另一种食物来源，尽管在大规模空间中如何实现这一点存在分歧。例如，心理地图要求动物在内部代表空间，以几何方式定位地标，使用真实的距离和方向，并生成通向资源的新捷径。或者，拓扑图或基于路线的地图是基于固定点、地标和路线的网络，这样一块食物就可以与另一块相连。在这项研究中，我们描述了在马达加斯加东南部发现的两种原猴的食物来源之间的旅行模式，这两种原猴分别是Propithecus edwardsi和Eulemur fulvus Rufus。这两个物种都依赖水果，并有很大的家庭范围大小。通过比较斑块之间的距离、斑块大小和转弯角度，我们发现这两个物种都喜欢最近的食物斑块，而白纹伊蚊则以相对直线的方式旅行。在E.F.Rufus中看到的回溯的数量可能与它们庞大的群体规模和对大冠果树的依赖有关。我们认为，这两个原猴物种的目标定向觅食依赖于基于拓扑或路线的地图。这些是与灵长类认知进化的生态和社会背景相关的罕见的行为数据。版权所有(C)2008 S.Karger AG，巴塞尔。
A variety of anthropoids travel efficiently from one food source to another, although there is disagreement over how this is accomplished over large- scale space. Mental maps, for example, require that animals internally represent space, geometrically locate landmarks, use true distance and direction, and generate novel shortcuts to resources. Alternately, topological or route- based maps are based on a network of fixed points, landmarks and routes so that one food patch can be linked with another. In this study we describe travel patterns between food sources for two prosimian species found in southeastern Madagascar, Propithecus edwardsi and Eulemur fulvus rufus. Both species are dependent on fruit and have large home range sizes. By comparing inter-patch distances, patch size and turning angles, we found that both species prefer nearest neighbor food patches and P. edwardsi travels in relatively straight lines. The amount of backtracking seen in E. f. rufus may be linked to their large group size and dependence on large- crowned fruit trees. We suggest that the goal- oriented foraging of both prosimian species is dependent on a topological or route- based map. These are rare behavioral data relevant to ecological and social contexts of primate cognitive evolution. Copyright (c) 2008 S. Karger AG, Basel.