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Statements

Subject Item
n2:RIV%2F60076658%3A12310%2F12%3A43883949%21RIV13-MSM-12310___
rdf:type
n6:Vysledek skos:Concept
dcterms:description
1. Some orchids have been proposed to be Batesian floral mimics imitating flowers of sympatric rewarding species to attract pollinators. It is not yet well understood which traits are critical for pollinator attraction, although colour, shape and scent have all been implicated. 2. We conducted field-based behavioural experiments using pairwise combinations of plastic flowers differing in spectral and shape properties offered to long-proboscid tabanid flies (Philoliche aethiopica) at two sites one where the fly-pollinated orchid mimic Disa pulchra occurs with its pink-flowered model, the iris Watsonia lepida and another where the flies forage on a blue-flowered rewarding plant Agapanthus campanulatus. 3. Flies intensively visited and probed plastic flowers of colours indistinguishable in a fly vision model from those of the rewarding plants. Inflorescence architecture and brightness of plastic flowers made little difference to fly attraction, but those that matched the shape and nectar guides of Watsonia flowers were significantly more attractive. 4. Flowers of the three focal plant species are weakly scented and divergent in scent chemistry. 5. This study shows that traits that mimic, in order of importance, the spectra, shape and nectar guide patterns of flowers of rewarding plants would be under strong selection in food-deceptive orchids as they maximize attractiveness to their pollinators. Our experiments also help to explain why deceptive orchids in general often seem to match the flowers of sympatric rewarding plants more in visual attributes than in scent chemistry. 1. Some orchids have been proposed to be Batesian floral mimics imitating flowers of sympatric rewarding species to attract pollinators. It is not yet well understood which traits are critical for pollinator attraction, although colour, shape and scent have all been implicated. 2. We conducted field-based behavioural experiments using pairwise combinations of plastic flowers differing in spectral and shape properties offered to long-proboscid tabanid flies (Philoliche aethiopica) at two sites one where the fly-pollinated orchid mimic Disa pulchra occurs with its pink-flowered model, the iris Watsonia lepida and another where the flies forage on a blue-flowered rewarding plant Agapanthus campanulatus. 3. Flies intensively visited and probed plastic flowers of colours indistinguishable in a fly vision model from those of the rewarding plants. Inflorescence architecture and brightness of plastic flowers made little difference to fly attraction, but those that matched the shape and nectar guides of Watsonia flowers were significantly more attractive. 4. Flowers of the three focal plant species are weakly scented and divergent in scent chemistry. 5. This study shows that traits that mimic, in order of importance, the spectra, shape and nectar guide patterns of flowers of rewarding plants would be under strong selection in food-deceptive orchids as they maximize attractiveness to their pollinators. Our experiments also help to explain why deceptive orchids in general often seem to match the flowers of sympatric rewarding plants more in visual attributes than in scent chemistry.
dcterms:title
The evolution of floral mimicry: identifying traits that visually attract pollinators The evolution of floral mimicry: identifying traits that visually attract pollinators
skos:prefLabel
The evolution of floral mimicry: identifying traits that visually attract pollinators The evolution of floral mimicry: identifying traits that visually attract pollinators
skos:notation
RIV/60076658:12310/12:43883949!RIV13-MSM-12310___
n6:predkladatel
n14:orjk%3A12310
n3:aktivita
n11:S
n3:aktivity
S
n3:cisloPeriodika
6
n3:dodaniDat
n12:2013
n3:domaciTvurceVysledku
n7:5630231 n7:3820165
n3:druhVysledku
n17:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
135297
n3:idVysledku
RIV/60076658:12310/12:43883949
n3:jazykVysledku
n4:eng
n3:klicovaSlova
scent; fly pollination; Disa; colour; Batesian floral mimicry
n3:klicoveSlovo
n15:scent n15:Disa n15:colour n15:Batesian%20floral%20mimicry n15:fly%20pollination
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[F7DE40D36340]
n3:nazevZdroje
Functional Ecology
n3:obor
n19:EH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n12:2012
n3:svazekPeriodika
26
n3:tvurceVysledku
Jersáková, Jana Šmilauer, Petr Juergens, Andreas Johnson, Steven D.
n3:wos
000311433600015
s:issn
0269-8463
s:numberOfPages
9
n16:doi
10.1111/j.1365-2435.2012.02059.x
n13:organizacniJednotka
12310