Memory Effects on Movement Behavior in Animal Foraging.
Memory Effects on Movement Behavior in Animal Foraging.
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DOI：
10.1371/journal.pone.0136057
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Goodwin RA
中科院分区：
文献类型：
--
作者：
Bracis C;Gurarie E;Van Moorter B;Goodwin RA
一个人的选择是由他的经验塑造的，这是行为的一个基本属性，对于理解复杂的过程很重要。学习和记忆在许多分类群中都可以观察到，并且可以驱动行为，包括觅食行为。为了探索记忆提供优势的条件，我们提出了一个连续空间，连续时间模型的动物运动，结合学习和记忆。使用模拟模型，我们评估的好处内存提供了几种类型的景观与可变质量的资源，并比较内存模型内的嵌套层次结构的简单模型（行为切换和随机游走）。我们发现，记忆几乎总是导致改善觅食成功，但这种效果是最显着的景观包含稀疏，连续的补丁的高价值资源，再生相对较快，位于否则缺乏景观。在这些情况下，由于大小，价值或位置困难，找到资源补丁会有很大的回报。虽然记忆知情的搜索是很难区分的其他因素，仅使用运动数据，我们的研究结果表明，不成比例的空间使用较高的价值领域，较高的消费率和消费的变化都指向内存影响动物在某些生态系统中的运动方向。
An individual’s choices are shaped by its experience, a fundamental property of behavior important to understanding complex processes. Learning and memory are observed across many taxa and can drive behaviors, including foraging behavior. To explore the conditions under which memory provides an advantage, we present a continuous-space, continuous-time model of animal movement that incorporates learning and memory. Using simulation models, we evaluate the benefit memory provides across several types of landscapes with variable-quality resources and compare the memory model within a nested hierarchy of simpler models (behavioral switching and random walk). We find that memory almost always leads to improved foraging success, but that this effect is most marked in landscapes containing sparse, contiguous patches of high-value resources that regenerate relatively fast and are located in an otherwise devoid landscape. In these cases, there is a large payoff for finding a resource patch, due to size, value, or locational difficulty. While memory-informed search is difficult to differentiate from other factors using solely movement data, our results suggest that disproportionate spatial use of higher value areas, higher consumption rates, and consumption variability all point to memory influencing the movement direction of animals in certain ecosystems.