Testing two competing hypotheses for Eurasian jays' caching for the future.
Testing two competing hypotheses for Eurasian jays' caching for the future.
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DOI：
10.1038/s41598-020-80515-7
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发表时间：
2021-01-12
影响因子：
4.6
通讯作者：
Clayton NS
中科院分区：
文献类型：
--
作者：
Amodio P;Brea J;Farrar BG;Ostojić L;Clayton NS
先前的研究报告称，鸦科动物优先在没有食物的地方贮藏食物，或者在某种特定食物不会出现的地方贮藏更多该种食物。在此，我们考虑对这些前瞻性贮藏行为的可能解释，并直接比较两种相互竞争的假设。补偿性贮藏假设表明，鸟类学会在过去某种食物出现频率较低的地方贮藏更多该种食物。相比之下，未来规划假设表明，鸟类回忆过去特定事件的“是什么 - 何时 - 何地”特征以预测未来食物的可获取性。我们设计了一个实验方案，在该方案中两种假设针对不同的贮藏地点预测了不同的贮藏模式，这样就可以区分这两种解释。我们在一个贝叶斯模型比较中对这些假设进行了形式化，并在针对先前测试过的物种之一——欧亚松鸦的两个实验中测试了该方案。在这两个实验中，观察到的贮藏模式均不支持任何一种假设；相反，用贮藏物在不同贮藏地点的均匀分布来解释是最合适的。未来需要进一步研究，以更深入地了解支撑鸦科动物为未来贮藏食物的认知机制。
Previous research reported that corvids preferentially cache food in a location where no food will be available or cache more of a specific food in a location where this food will not be available. Here, we consider possible explanations for these prospective caching behaviours and directly compare two competing hypotheses. The Compensatory Caching Hypothesis suggests that birds learn to cache more of a particular food in places where that food was less frequently available in the past. In contrast, the Future Planning Hypothesis suggests that birds recall the ‘what–when–where’ features of specific past events to predict the future availability of food. We designed a protocol in which the two hypotheses predict different caching patterns across different caching locations such that the two explanations can be disambiguated. We formalised the hypotheses in a Bayesian model comparison and tested this protocol in two experiments with one of the previously tested species, namely Eurasian jays. Consistently across the two experiments, the observed caching pattern did not support either hypothesis; rather it was best explained by a uniform distribution of caches over the different caching locations. Future research is needed to gain more insight into the cognitive mechanism underpinning corvids’ caching for the future.
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影响因子：
3.7
作者：
Osvath M;Karvonen E
通讯作者：
Karvonen E
DOI：
10.1037/0097-7403.31.2.115
发表时间：
2005-04-01
期刊：
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-ANIMAL BEHAVIORAL PROCESSES
影响因子：
--
作者：
Clayton, NS;Dally, J;Dickinson, A
通讯作者：
Dickinson, A
影响因子：
9.2
作者：
Correia, Sergio P. C.;Dickinson, Anthony;Clayton, Nicola S.
通讯作者：
Clayton, Nicola S.
DOI：
10.1098/rstb.2001.0947
发表时间：
2001-09-29
影响因子：
6.3
作者：
Clayton, NS;Griffiths, DP;Dickinson, A
通讯作者：
Dickinson, A
DOI：
10.1098/rspb.2005.3350
发表时间：
2006-02-22
影响因子：
4.7
作者：
de Kort, SR;Clayton, NS
通讯作者：
Clayton, NS