POLLINATOR-MEDIATED SELECTION ON FLORAL DISPLAY AND FLOWERING TIME IN THE PERENNIAL HERB<i>ARABIDOPSIS LYRATA</i>

Sandring, Saskia; Ågren, Jon

doi:10.1111/j.1558-5646.2009.00624.x

Cited by 160 publications

(197 citation statements)

References 79 publications

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“…Corolla size affected pollinator attraction and showed significant heritability within natural populations (Campbell et al 1996;Gómez et al 2009), thus was under direct selection by pollinators (Galen 1989;Gong and Huang 2009;Sandring and Å gren 2009;Parachnowitsch and Kessler 2010;. As stated in previous findings, pollinators preferred flowers with large corolla in I. oxyanthera (Table 5; Fig.…”

Section: Selection On Other Floral Traitssupporting

confidence: 55%

“…Studies on ecological and evolutionary consequences of species interactions have been mainly focusing on single pairwise effects, such as pollinator-mediated (Campbell et al 1996;Alexandersson and Johnson 2002;Sandring and Å gren 2009;Cuartas-Domínguez and Medel 2010; or nectar robber-mediated (Lara and Ornelas 2001;Urcelay et al 2006;Castro et al 2008;Young 2008;Navarro and Medel 2009) selection on floral traits. However, single pairwise interaction seldomly exists in isolation and can be interfered by other community members (Gómez 2003;Cariveau et al 2004;Lavergne et al 2005;Brody et al 2008;Sánchez-Lafuente 2007;Bartkowska and Johnston 2012).…”

Section: Introductionmentioning

confidence: 99%

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

Wang

et al. 2013

Plant Syst Evol

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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.

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Section: Selection On Other Floral Traitssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

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

Wang

et al. 2013

Plant Syst Evol

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“…(Koch et al, 2000;, and now from its own fully sequenced genome. Arabidopsis lyrata is an outcrossing perennial that shows extensive phenotypic variation and grows in natural habitats that span a large ecological range (Jonsell et al, 1995;Kivimäki et al, 2007;Leinonen et al, 2009;Sandring and Å gren, 2009). Already several local adaptation/ selection studies have been published (Kivimäki et al, 2007;Kuittinen et al, 2007;Leinonen et al, 2009), with special emphasis on studying self-incompatibility evolution Schierup et al, 2006;Mable and Adam, 2007).…”

Section: Introductionmentioning

confidence: 99%

Population structure and historical biogeography of European Arabidopsis lyrata

et al. 2010

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“…In our publication, we found six studies that measured natural selection in open and hand-pollinated plants. [8][9][10][11][12][13] Here we included an additional study which was recently published alongside our paper 14 as well as data from an upcoming publication 15 and one that was brought to our attention. 16 With the additional selection coefficients we can perform a more informed test of whether selection on floral characters is generally stronger in open-pollinated plants when compared to hand-pollinated plants.…”

Section: Pollinator-mediated Selectionmentioning

confidence: 99%

“…Furthermore, other studies have found significant selection on flower size and number but have experimentally demonstrated that pollinators are not driving this selection. 9,13 Thus, it is clearly not enough to measure selection on a trait and assume the agent of selection based on behavioral experiments.…”

Section: Pollinator-mediated Selectionmentioning

confidence: 99%

Pollinator-mediated natural selection inPenstemon digitalis

Parachnowitsch

Kessler²

2010

Plant Signaling & Behavior

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Measuring the agents of natural selection is important because it allows us to understand not only which traits are expected to evolve but also why they will evolve. Natural selection by pollinators on floral traits is often assumed because in outcrossing animal-pollinated plants flowers are generally thought to function as advertisements of rewards directed at pollinators. We tested the role of bee pollinators in selection on Penstemon digitalis and found that pollinators were driving selection for larger and more flowers. However, what makes our publication unique is the additional information we gained from reviewing the few other studies that also directly tested whether pollinators were agents of selection on floral traits. As we would expect if pollinators are important agents of selection, selection on floral traits was significantly stronger when pollinators were present than when their choices were experimentally removed. Taken together, these results suggest that pollinators can be important drivers of selection in contemporary populations. Plants and PollinatorsIn a recent publication, 1,2 we show that pollinators can drive selection on floral traits of Penstemon digitalis. Moreover, we found that although there are few studies available that directly test whether pollinators are the agents of natural selection, selection on floral traits is generally stronger in the presence of pollinators than in their absence.1 These results are important because they both empirically demonstrate that pollinators can and do act as agents of selection in the wild and that pollinator-mediated selection in

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POLLINATOR-MEDIATED SELECTION ON FLORAL DISPLAY AND FLOWERING TIME IN THE PERENNIAL HERBARABIDOPSIS LYRATA

Cited by 160 publications

References 79 publications

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

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

Population structure and historical biogeography of European Arabidopsis lyrata

Pollinator-mediated natural selection inPenstemon digitalis

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