Arid
DOI10.1111/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
ISSN1010-061X
EISSN1420-9101
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
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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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