DOI: 10.1111/ele.12701
Scopus记录号: 2-s2.0-84996565877
论文题名: Evolutionary consequences of ecological factors: pollinator reliability predicts mating-system traits of a perennial plant
作者: Opedal Ø.H. ; Albertsen E. ; Armbruster W.S. ; Pérez-Barrales R. ; Falahati-Anbaran M. ; Pélabon C.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
卷: 19, 期: 12 起始页码: 1486
结束页码: 1495
语种: 英语
英文关键词: Dalechampia
; ecological context
; herkogamy
; mixed mating systems
; plant–pollinator interactions
; reproductive assurance
Scopus关键词: Dalechampia
; Dalechampia scandens
; microsatellite DNA
; animal
; bee
; Costa Rica
; cross breeding
; Euphorbiaceae
; female
; flower
; genetics
; genotype
; heterozygote
; inbreeding depression
; male
; physiology
; pollen
; pollination
; Animals
; Bees
; Costa Rica
; Crosses, Genetic
; Euphorbiaceae
; Female
; Flowers
; Genotype
; Heterozygote
; Inbreeding Depression
; Male
; Microsatellite Repeats
; Pollen
; Pollination
英文摘要: The reproductive-assurance hypothesis predicts that mating-system traits will evolve towards increased autonomous self-pollination in plant populations experiencing unreliable pollinator service. We tested this long-standing hypothesis by assessing geographic covariation among pollinator reliability, outcrossing rates, heterozygosity and relevant floral traits across populations of Dalechampia scandens in Costa Rica. Mean outcrossing rates ranged from 0.16 to 0.49 across four populations, and covaried with the average rates of pollen arrival on stigmas, a measure of pollinator reliability. Across populations, genetically based differences in herkogamy (anther–stigma distance) were associated with variation in stigmatic pollen loads, outcrossing rates and heterozygosity. These observations are consistent with the hypothesis that, when pollinators are unreliable, floral traits promoting autonomous selfing evolve as a mechanism of reproductive assurance. Extensive covariation between floral traits and mating system among closely related populations further suggests that floral traits influencing mating systems track variation in adaptive optima generated by variation in pollinator reliability. © 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/107691
Appears in Collections: 气候减缓与适应
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作者单位: Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology, NTNU, Trondheim, Norway; School of Biological Sciences, University of Portsmouth, King Henry Building, King Henry I Street, Portsmouth, United Kingdom; Department of Biology, Norwegian University of Science and Technology, NTNU, Trondheim, Norway; Institute of Arctic Biology, University of Alaska, Fairbanks, AK, United States; School of Biology and Center of Excellence in Phylogeny of Living Organisms, University of Tehran, Tehran, Iran
Recommended Citation:
Opedal Ø.H.,Albertsen E.,Armbruster W.S.,et al. Evolutionary consequences of ecological factors: pollinator reliability predicts mating-system traits of a perennial plant[J]. Ecology Letters,2016-01-01,19(12)