DOI: 10.1111/ele.12619
Scopus记录号: 2-s2.0-84971283720
论文题名: The importance of the timescale of the fitness metric for estimates of selection on phenotypic traits during a period of demographic change
作者: Scranton K. ; Lummaa V. ; Stearns S.C.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
语种: 英语
英文关键词: Demographic change
; Fitness
; Fitness timescale
; Life-history traits
; Phenotypic selection
Scopus关键词: birth rate
; Finland
; genetic selection
; genetics
; human
; population dynamics
; reproductive fitness
; time factor
; Birth Rate
; Finland
; Genetic Fitness
; Humans
; Population Dynamics
; Selection, Genetic
; Time Factors
英文摘要: Although fitness is central to the evolutionary process, metrics vary by timescale. Different timescales may give rise to different estimates of selection, especially during demographic transitions caused by rapid environmental and socioeconomic change. In this study, we used a dataset of a human population in Finland from 1775 to 1950 to compare two fitness metrics and their estimates of selection pressures, before and during a demographic transition. Both metrics, lifetime reproductive success and an annual metric of individual performance, declined while selection on the ages at first and last reproduction remained nearly constant, favouring individuals with wider reproductive windows. The ability to partition the annual metric into contributions from reproduction and survival revealed the short-term effects of a famine and the reversal of selection pressure via the survival component of annual fitness. Although the metrics generally agreed, the annual metric detected the effects of environmental variation and demographic change occurring within a generation. © 2016 John Wiley & Sons Ltd/CNRS. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107837
Appears in Collections: 气候减缓与适应
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作者单位: Department of Ecology and Evolutionary Biology Yale University 165 Prospect Street CT 06520-8102 New Haven, CT USA; Department of Biology University of Turku FI-20014 Turku Finland
Recommended Citation:
Scranton K.,Lummaa V.,Stearns S.C.. The importance of the timescale of the fitness metric for estimates of selection on phenotypic traits during a period of demographic change[J]. Ecology Letters,2016-01-01