Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/jeb.12378 |
Playing smart vs. playing safe: the joint expression of phenotypic plasticity and potential bet hedging across and within thermal environments | |
Simons, A. M. | |
通讯作者 | Simons, A. M. |
来源期刊 | JOURNAL OF EVOLUTIONARY BIOLOGY
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ISSN | 1010-061X |
EISSN | 1420-9101 |
出版年 | 2014 |
卷号 | 27期号:6页码:1047-1056 |
英文摘要 | Adaptive phenotypic plasticity evolves when cues reliably predict fitness consequences of life-history decisions, whereas bet hedging evolves when environments are unpredictable. These modes of response should be jointly expressed, because environmental variance is composed of both predictable and unpredictable components. However, little attention has been paid to the joint expression of plasticity and bet hedging. Here, I examine the simultaneous expression of plasticity in germination rate and two potential bet-hedging traits - germination fraction and within-season diversification in timing of germination - in seeds from multiple seed families of five geographically distant populations of Lobelia inflata (L.) subjected to a thermal gradient. Populations differ in germination plasticity to temperature, in total germination fraction and in the expression of potential diversification in the timing of germination. The observation of a negative partial correlation between the expression of plasticity and germination variance (potential diversification), and a positive correlation between plasticity and germination fraction is suggestive of a trade-off between modes of response to environmental variance. If the observed correlations are indicative of those between adaptive plasticity and bet hedging, we expect an optimal balance to exist and differ among populations. I discuss the challenges involved in testing whether the balance between plasticity and bet hedging depends on the relative predictability of environmental variance. |
英文关键词 | bet hedging developmental reaction norms diversification dormancy geometric mean fitness life-history evolution Lobelia phenotypic plasticity seed germination thermal performance curves |
类型 | Article |
语种 | 英语 |
国家 | Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000337522700005 |
WOS关键词 | RANDOMLY VARYING ENVIRONMENT ; SEED-GERMINATION ; DESERT ANNUALS ; CLIMATE-CHANGE ; OPTIMIZING REPRODUCTION ; PLANTAGO-LANCEOLATA ; EVOLUTIONARY BETS ; ADAPTATION ; SELECTION ; TRAITS |
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/2XILL650/183271 |
作者单位 | (1)Carleton Univ, Dept Biol, Ottawa, ON K1S 5B6, Canada |
推荐引用方式 GB/T 7714 | Simons, A. M.. Playing smart vs. playing safe: the joint expression of phenotypic plasticity and potential bet hedging across and within thermal environments[J],2014,27(6):1047-1056. |
APA | Simons, A. M..(2014).Playing smart vs. playing safe: the joint expression of phenotypic plasticity and potential bet hedging across and within thermal environments.JOURNAL OF EVOLUTIONARY BIOLOGY,27(6),1047-1056. |
MLA | Simons, A. M.."Playing smart vs. playing safe: the joint expression of phenotypic plasticity and potential bet hedging across and within thermal environments".JOURNAL OF EVOLUTIONARY BIOLOGY 27.6(2014):1047-1056. |
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