Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/jeb.12474 |
Why wait? Three mechanisms selecting for environment-dependent developmental delays | |
Scott, M. F.1; Otto, S. P.2 | |
通讯作者 | Scott, M. F. |
来源期刊 | JOURNAL OF EVOLUTIONARY BIOLOGY
![]() |
ISSN | 1010-061X |
EISSN | 1420-9101 |
出版年 | 2014 |
卷号 | 27期号:10页码:2219-2232 |
英文摘要 | Many species delay development unless particular environments or rare disturbance events occur. How can such a strategy be favoured over continued development? Typically, it is assumed that continued development (e.g. germination) is not advantageous in environments that have low juvenile/seedling survival (mechanism 1), either due to abiotic or competitive effects. However, it has not previously been shown how low early survival must be in order to favour environment-specific developmental delays for long-lived species. Using seed dormancy as an example of developmental delays, we identify a threshold level of seedling survival in bad’ environments below which selection can favour germination that is limited to good’ environments. This can be used to evaluate whether observed differences in seedling survival are sufficient to favour conditional germination. We also present mathematical models that demonstrate two other, often overlooked, mechanisms that can favour conditional germination in the absence of differences in seedling survival. Specifically, physiological trade-offs can make it difficult to have germination rates that are equally high in all environments (mechanism 2). We show that such trade-offs can either favour conditional germination or intermediate (mixed) strategies, depending on the trade-off shape. Finally, germination in every year increases the likelihood that some individuals are killed in population-scale disturbances before reproducing; it can thus be favourable to only germinate immediately after a disturbance (mechanism 3). We demonstrate how demographic data can be used to evaluate these selection pressures. By presenting these three mechanisms and the conditions that favour conditional germination in each case, we provide three hypotheses that can be tested as explanations for the evolution of environment-dependent developmental delays. |
英文关键词 | developmental delays disturbance environmental variation germination strategies life-history evolution modelling seed dormancy serotiny |
类型 | Article |
语种 | 英语 |
国家 | Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000343920900017 |
WOS关键词 | RANDOMLY VARYING ENVIRONMENTS ; ESS GERMINATION STRATEGIES ; LIFE-HISTORY EVOLUTION ; CANOPY SEED STORAGE ; VARIABLE ENVIRONMENTS ; DESERT ANNUALS ; OPTIMIZING REPRODUCTION ; UNCERTAIN ENVIRONMENTS ; NATURAL-POPULATIONS ; FIRE BEHAVIOR |
WOS类目 | Ecology ; Evolutionary Biology ; Genetics & Heredity |
WOS研究方向 | Environmental Sciences & Ecology ; Evolutionary Biology ; Genetics & Heredity |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/183273 |
作者单位 | 1.Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada; 2.Univ British Columbia, Dept Zool, Vancouver, BC V6T 1Z4, Canada |
推荐引用方式 GB/T 7714 | Scott, M. F.,Otto, S. P.. Why wait? Three mechanisms selecting for environment-dependent developmental delays[J],2014,27(10):2219-2232. |
APA | Scott, M. F.,&Otto, S. P..(2014).Why wait? Three mechanisms selecting for environment-dependent developmental delays.JOURNAL OF EVOLUTIONARY BIOLOGY,27(10),2219-2232. |
MLA | Scott, M. F.,et al."Why wait? Three mechanisms selecting for environment-dependent developmental delays".JOURNAL OF EVOLUTIONARY BIOLOGY 27.10(2014):2219-2232. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Scott, M. F.]的文章 |
[Otto, S. P.]的文章 |
百度学术 |
百度学术中相似的文章 |
[Scott, M. F.]的文章 |
[Otto, S. P.]的文章 |
必应学术 |
必应学术中相似的文章 |
[Scott, M. F.]的文章 |
[Otto, S. P.]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。