Knowledge Management System Of Institute Of Botany,CAS
| Seed-predator satiation and Janzen-Connell effects vary with spatial scales for seed-feeding insects | |
| Xiao, Zhishu1; Mi, Xiangcheng1,2; Holyoak, Marcel3; Xie, Wenhua; Cao, Ke2; Yang, Xifu1; Huang, Xiaoqun; Krebs, Charles J. | |
| 2017 | |
| 发表期刊 | ANNALS OF BOTANY
 |
| ISSN | 0305-7364 |
| 卷号 | 119期号:1页码:109-116 |
| 摘要 | Background and Aims The Janzen-Connell model predicts that common species suffer high seed predation from specialized natural enemies as a function of distance from parent trees, and consequently as a function of con-specific density, whereas the predator satiation hypothesis predicts that seed attack is reduced due to predator satiation at high seed densities. Pre-dispersal predation by insects was studied while seeds are still on parent trees, which represents a frequently overlooked stage in which seed predation occurs. Methods Reproductive tree density and seed production were investigated from ten Quercus serrata populations located in south-west China, quantifying density-dependent pre-dispersal seed predation over two years by three insect groups. Key Results Acorn infestation was nearly twice as high in the low-seed year as that in the high-seed year, with con-siderable spatio-temporal variation in the direction and magnitude of density-dependent pre-dispersal seed predation evident. Across whole populations of trees, a high density of reproductive trees caused predator satiation and reduced insect attack in the high-seed year. Within individual trees, and consistent with the Janzen-Connell model, overall insect seed predation was positively correlated with seed production in the low-seed year. In addition, there was vari-ation among insect taxa, with positive density-dependent seed predation by Curculio weevils in the high-seed year and moths in the low-seed year, but apparent density independence by Cyllorhynchites weevils in both years. Conclusions The overall trend of negative density-dependent, pre-dispersal seed predation suggests that predator satiation limited the occurrence of Janzen-Connell effects across Q. serrata populations. Such effects may have large impacts on plant population dynamics and tree diversity, depending on the extent to which they are reduced by counteracting positive density-dependent predation for seeds on individual trees and other factors affecting suc-cessful recruitment. |
| 关键词 | Conspecific density density dependence predator satiation pre-dispersal seed predators Quercus seed survival spatio-temporal variability |
| 学科领域 | Plant Sciences |
| DOI | 10.1093/jxb/erw420 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | DENSITY-DEPENDENCE ; EVOLUTIONARY ECOLOGY ; FORESTS ; DISPERSAL ; IMPACTS ; HYPOTHESIS ; TOLERANCE ; HERBIVORY ; DYNAMICS |
| WOS记录号 | WOS:000397158100022 |
| 出版者 | OXFORD UNIV PRESS |
| 文献子类 | Article |
| 出版地 | OXFORD |
| EISSN | 1095-8290 |
| 资助机构 | NSF ChinaNational Natural Science Foundation of China (NSFC) [31330013, 31270470, 31071929] ; CAS Visiting Professorship for Senior International Scientists [2010T1S12] |
| 作者邮箱 | xiaozs@ioz.ac.cn |
| 作品OA属性 | Green Published, hybrid |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/21975 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Zool, State Key Lab Integrated Management Pest Insects, 1 Beichen West Rd, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Univ Calif Davis, Dept Environm Sci & Policy, 1 Shields Ave, Davis, CA 95616 USA 5.Krebs, Charles J.] Univ British Columbia, Dept Zool, 6270 Univ Blvd, Vancouver, BC V6T 1Z4, Canada |
| 推荐引用方式 GB/T 7714 | Xiao, Zhishu,Mi, Xiangcheng,Holyoak, Marcel,et al. Seed-predator satiation and Janzen-Connell effects vary with spatial scales for seed-feeding insects[J]. ANNALS OF BOTANY,2017,119(1):109-116. |
| APA | Xiao, Zhishu.,Mi, Xiangcheng.,Holyoak, Marcel.,Xie, Wenhua.,Cao, Ke.,...&Krebs, Charles J..(2017).Seed-predator satiation and Janzen-Connell effects vary with spatial scales for seed-feeding insects.ANNALS OF BOTANY,119(1),109-116. |
| MLA | Xiao, Zhishu,et al."Seed-predator satiation and Janzen-Connell effects vary with spatial scales for seed-feeding insects".ANNALS OF BOTANY 119.1(2017):109-116. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Yin-2017-Involvement（10175KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论