Pollinators and nectar robbers cause directional selection for large spur circle in Impatiens oxyanthera (Balsaminaceae)

doi:10.1007/s00606-013-0794-x

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 生物多样性与生态系统服务领域 > 中国科学院山地生态恢复与生物资源利用重点实验室

	Pollinators and nectar robbers cause directional selection for large spur circle in Impatiens oxyanthera (Balsaminaceae)
	Wang, Qiong 1,2; Li, Yunxiang 2; Pu, Xiaozhen 1; Zhu, Liying 1; Tang, Zheng 1; Liu, Qing 1
刊名	PLANT SYSTEMATICS AND EVOLUTION
	2013-08
卷号	299 期号:7 页码:1263-1274
关键词	Phenotypic selection Nectar robbing Pollination Spur shape Spur angle Mediating effect Female reproductive success Impatiens Balsaminaceae Bees
ISSN号	0378-2697
DOI	10.1007/s00606-013-0794-x
产权排序	1
文献子类	Article
英文摘要	Nectar spurs have an important role in floral evolution and plant-pollinator coadaptation. The flowers of some species possess spurs curving into a circle. However, it is unclear whether spur circle diameter is under direct selection pressure from different sources, such as pollinators and nectar robbers. In this study, we quantified selection on some floral traits, such as spur circle diameter in Impatiens oxyanthera (Balsaminaceae) using phenotypic selection analysis and compared the relative importance of pollinators and nectar robbers as selective agents using mediation analysis. The study showed that pollinators caused significant selection on corolla length, spur curvature and spur circle diameter while nectar robbers only imposed strong selection on spur circle diameter. Pollinators favored flowers with large corolla, curly spurs and large spur circle while nectar robbers preferred flowers with small spur circle. More pollinator visits resulted in higher female reproductive success, while robbery reduced female fitness. Conflicting selection on spur traits from pollinators and nectar robbers was not found. Mediation analysis showed that selection on floral traits through nectar robbing was stronger than selection through pollination. The results suggested that pollinators and nectar robbers jointly mediated the directional selection for large spur circle, and nectar robbers caused stronger selection than pollinators on floral traits.
学科主题	Plant Sciences
URL标识	查看原文
WOS关键词	MEDIATED SELECTION ; FLORAL TRAITS ; REPRODUCTIVE SUCCESS ; IPOMOPSIS-AGGREGATA ; POLLEN LIMITATION ; NATURAL-SELECTION ; ERYSIMUM-MEDIOHISPANICUM ; PLANT REPRODUCTION ; SEED PREDATORS ; FLOWER SIZE
WOS研究方向	Plant Sciences ; Evolutionary Biology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000322031800006
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29917]
专题	生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
通讯作者	Liu, Qing
作者单位	1.Chinese Acad Sci, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Ecol Restorat Biodivers Conservat Key Lab Sichuan, Chengdu Inst Biol, Chengdu 610041, Peoples R China; 2.China West Normal Univ, Key Lab Southwest China Wildlife Resources Conser, Minist Educ, Nanchong 637009, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qiong,Li, Yunxiang,Pu, Xiaozhen,et al. Pollinators and nectar robbers cause directional selection for large spur circle in Impatiens oxyanthera (Balsaminaceae)[J]. PLANT SYSTEMATICS AND EVOLUTION,2013,299(7):1263-1274.
APA	Wang, Qiong,Li, Yunxiang,Pu, Xiaozhen,Zhu, Liying,Tang, Zheng,&Liu, Qing.(2013).Pollinators and nectar robbers cause directional selection for large spur circle in Impatiens oxyanthera (Balsaminaceae).PLANT SYSTEMATICS AND EVOLUTION,299(7),1263-1274.
MLA	Wang, Qiong,et al."Pollinators and nectar robbers cause directional selection for large spur circle in Impatiens oxyanthera (Balsaminaceae)".PLANT SYSTEMATICS AND EVOLUTION 299.7(2013):1263-1274.