Discrimination behavior mediates foraging quality versus quantity trade-offs: nut choice in wild rodents
文献类型：期刊论文
| 作者 | Chen, Wenwen1; Zhang, Ze1; Buesching, Christina D.; Newman, Chris; Macdonald, David W.; Xie, Zongqiang1 ; Sun, Shucun; Zhou, Youbing1,3
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| 刊名 | BEHAVIORAL ECOLOGY
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| 出版日期 | 2017 |
| 卷号 | 28期号:2页码:607-616 |
| 关键词 | discrimination ability food quality food quantity optimal foraging strategy seed/nut choice |
| ISSN号 | 1045-2249 |
| DOI | 10.1002/ece3.2967 |
| 文献子类 | Article |
| 英文摘要 | Discrimination, the ability to distinguish sensory stimuli and respond accordingly, is a critical factor underscoring optimal foraging decisions. Nevertheless, little is known about how mammals discriminate between apparently similar foods of different quality. Here, we compared the foraging behavior of Chinese white-bellied rats, Niviventer confucianus, and Edwards's long-tailed giant rats, Leopoldamys edwardsi, under natural conditions in the field and in a captive enclosure without predation/competition. We examined the behavioral processes involved in discriminating between sound (i.e., undamaged) and insect larvae-infested nuts of seguin chestnuts (Castanea seguinii) and demonstrated that both rats could discriminate nut quality, where nut examination improved the rats' success rate at selecting sound nuts. Despite similar extents of discrimination-derived benefit in both settings for each species, differences between species-specific discrimination processes were identified. Chinese white-bellied rats engaged in a higher relative frequency and longer duration of nut examination in the enclosure than in the wild. This indicates that they alter their feeding strategy to trade-off selection for nut quality in captivity for a quantity-driven strategy in the field. In contrast, giant rats showed a consistent relative frequency of nut examination in both experimental settings. Their fixed strategy balanced food quality and quantity primarily to maximize caloric uptake without compromise when faced with predation or competition risk. We posit that this behavioral difference in optimal foraging between rat species is mediated by their differing, size-dependent energetic requirements as well as the higher competition pressure and predation risk faced by the approximately 8 times smaller white-bellied rats. |
| 学科主题 | Environmental Sciences & Ecology ; Evolutionary Biology |
| 出版地 | CARY |
| 电子版国际标准刊号 | 1465-7279 |
| WOS关键词 | BODY-SIZE ; SEED DISPERSAL ; PREDATION RISK ; DECISIONS ; SELECTION ; INFESTATION ; SHENNONGJIA ; STRATEGIES ; VIGILANCE ; ACCURACY |
| 语种 | 英语 |
| WOS记录号 | WOS:000403273000001 |
| 出版者 | OXFORD UNIV PRESS INC |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31470491, 31500359] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/22202]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Nanjing Univ, Sch Life Sci, Dept Ecol, 163 Xianlin Ave, Nanjing 210093, Jiangsu, Peoples R China 2.Univ Oxford, Recanati Kaplan Ctr, Dept Zool, Wildlife Conservat Res Unit, Tubney House, Abingdon OX13 5QL, Oxon, England 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Wenwen,Zhang, Ze,Buesching, Christina D.,et al. Discrimination behavior mediates foraging quality versus quantity trade-offs: nut choice in wild rodents[J]. BEHAVIORAL ECOLOGY,2017,28(2):607-616. |
| APA | Chen, Wenwen.,Zhang, Ze.,Buesching, Christina D..,Newman, Chris.,Macdonald, David W..,...&Zhou, Youbing.(2017).Discrimination behavior mediates foraging quality versus quantity trade-offs: nut choice in wild rodents.BEHAVIORAL ECOLOGY,28(2),607-616. |
| MLA | Chen, Wenwen,et al."Discrimination behavior mediates foraging quality versus quantity trade-offs: nut choice in wild rodents".BEHAVIORAL ECOLOGY 28.2(2017):607-616. |
入库方式： OAI收割
来源：植物研究所
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