Manipulation of trait expression and pollination regime reveals the adaptive significance of spur length

doi:10.1111/evo.13927

	Manipulation of trait expression and pollination regime reveals the adaptive significance of spur length
	Trunschke, Judith 1,2; Sletvold, Nina 1; Agren, Jon 1
通讯作者	Agren, Jon(jon.agren@ebc.uu.se)
	2020-01-24
发表期刊	EVOLUTION
ISSN	0014-3820
页码	13
摘要	Understanding the mechanisms of adaptive population differentiation requires that both the functional and adaptive significance of divergent traits are characterized in contrasting environments. Here, we (a) determined the effects of floral spur length on pollen removal and receipt using plants with artificial spurs representing the species-wide variation in length, and (b) quantified pollinator-mediated selection on spur length and three traits contributing to floral display in two populations each of the short-spurred and the long-spurred ecotype of the orchid Platanthera bifolia. Both pollen receipt and removal reached a maximum at 28-29 mm long spurs in a short-spurred population visited by short-tongued moths. In contrast, pollen receipt increased linearly across the tested range (4-52 mm) and pollen removal was unrelated to spur length in a long-spurred population predominantly visited by a long-tongued moth. The experimentally documented effects on pollen transfer were not reflected in pollinator-mediated selection through female fitness or pollen removal indicating that the natural within-population variation in spur length was insufficient to result in detectable variation in pollen limitation. Our study illustrates how combining trait manipulation with analysis of causes and strength of phenotypic selection can illuminate the functional and adaptive significance of trait expression when trait variation is limited.
关键词	Flower morphology orchid Platanthera bifolia pollinator-mediated selection population differentiation trait manipulation
DOI	10.1111/evo.13927
收录类别	SCI ; SCI
语种	英语
WOS记录号	WOS:000508983200001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/70530
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Agren, Jon
作者单位	1.Uppsala Univ, EBC, Dept Ecol & Genet, Plant Ecol & Evolut, SE-75236 Uppsala, Sweden 2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Trunschke, Judith,Sletvold, Nina,Agren, Jon. Manipulation of trait expression and pollination regime reveals the adaptive significance of spur length[J]. EVOLUTION,2020:13.
APA	Trunschke, Judith,Sletvold, Nina,&Agren, Jon.(2020).Manipulation of trait expression and pollination regime reveals the adaptive significance of spur length.EVOLUTION,13.
MLA	Trunschke, Judith,et al."Manipulation of trait expression and pollination regime reveals the adaptive significance of spur length".EVOLUTION (2020):13.