Titre
Convergent evolution of floral signals underlies the success of Neotropical orchids.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Auteur(s)
Papadopulos, A.S.
Auteure/Auteur
Powell, M.P.
Auteure/Auteur
Pupulin, F.
Auteure/Auteur
Warner, J.
Auteure/Auteur
Hawkins, J.A.
Auteure/Auteur
Salamin, N.
Auteure/Auteur
Chittka, L.
Auteure/Auteur
Williams, N.H.
Auteure/Auteur
Whitten, W.M.
Auteure/Auteur
Loader, D.
Auteure/Auteur
Valente, L.M.
Auteure/Auteur
Chase, M.W.
Auteure/Auteur
Savolainen, V.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1471-2954
Statut éditorial
Publié
Date de publication
2013
Volume
280
Numéro
1765
Première page
20130960
Langue
anglais
Résumé
The great majority of plant species in the tropics require animals to achieve pollination, but the exact role of floral signals in attraction of animal pollinators is often debated. Many plants provide a floral reward to attract a guild of pollinators, and it has been proposed that floral signals of non-rewarding species may converge on those of rewarding species to exploit the relationship of the latter with their pollinators. In the orchid family (Orchidaceae), pollination is almost universally animal-mediated, but a third of species provide no floral reward, which suggests that deceptive pollination mechanisms are prevalent. Here, we examine floral colour and shape convergence in Neotropical plant communities, focusing on certain food-deceptive Oncidiinae orchids (e.g. Trichocentrum ascendens and Oncidium nebulosum) and rewarding species of Malpighiaceae. We show that the species from these two distantly related families are often more similar in floral colour and shape than expected by chance and propose that a system of multifarious floral mimicry-a form of Batesian mimicry that involves multiple models and is more complex than a simple one model-one mimic system-operates in these orchids. The same mimetic pollination system has evolved at least 14 times within the species-rich Oncidiinae throughout the Neotropics. These results help explain the extraordinary diversification of Neotropical orchids and highlight the complexity of plant-animal interactions.
PID Serval
serval:BIB_4FD01F789238
PMID
Open Access
Oui
Date de création
2013-08-14T07:49:35.748Z
Date de création dans IRIS
2025-05-20T20:46:15Z
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Nom
BIB_4FD01F789238.P001.pdf
Version du manuscrit
preprint
Taille
931.73 KB
Format
Adobe PDF
PID Serval
serval:BIB_4FD01F789238.P001
URN
urn:nbn:ch:serval-BIB_4FD01F7892388
Somme de contrôle
(MD5):a1613215559b6d26f896867dfd183798