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title: Risk of cache pilferage determines hoarding behavior of rodents and seed fate
author: Cao, Lin;  Wang, Bo;  Yan, Chuan;  Wang, Zhenyu;  Zhang, Hongmao;  Geng, Yuanzhao;  Chen, Jin;  Zhang, Zhibin
Correspondent Author: Cao, L (reprint author), Chinese Acad Sci, Ctr Integrat Conservat, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.
Issued Date: 2018
Subject: Behavioral Sciences;  Life Sciences & Biomedicine - Other Topics;  Environmental Sciences & Ecology;  Zoology
Keyword: cache pilferage risk;  hoarding behavior evolution;  larder-hoarding;  scatter-hoarding;  seed dispersal;  survival time
Abstract: Cache pilferage by competitors is thought to drive the evolution of hoarding behavior in animals, which plays significant roles in tree regeneration and formation of mutualisms between trees and animals. However, little is known how cache pilferage risk among seeds of different tree species or years affects hoarding behavior and seed dispersal by animals. We hypothesized that scatter-hoarding rodents could adjust hoarding behavior according to variation in cache pilferage risk among seeds and years to minimize cache pilferage, by investigating the relationship between cache pilferage risk and seed dispersal of 7 tree species over 3 years in tropical forest in southwest China. Among years, the high pilferage risk was related to high probability of larder-hoarding and short periods of scatterhoarding; whereas, the probability of scatter-hoarding was higher in intermediate pilferage year than in both low and high pilferage years. Among seeds, high pilferage risk was related to low probability and short periods of scatter-hoarding. Our results indicated that cache pilferage risk significantly affected hoarding behaviors and seed dispersal by scatter-hoarding rodents as well as seed fates. Cache pilferage risk was a reliable explanatory factor for variation in seed dispersal, and it might be an important driving force in the evolution of rodent hoarding behaviors and seed characteristics.
Department: 其他
Related URLs: 10.1093/beheco/ary040
Source: BEHAVIORAL ECOLOGY
Content Type: 期刊论文
URI: http://ir.xtbg.org.cn/handle/353005/11008
ISSN: 1045-2249
Language: 英语
Appears in Collections:2012年后新成立研究组_期刊论文

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Recommended Citation:
Cao, Lin,Wang, Bo,Yan, Chuan,et al. Risk Of Cache Pilferage Determines Hoarding Behavior Of Rodents And Seed Fate[J]. Behavioral Ecology,2018,29(4):984-991.

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