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Pollinator convergence and the nature of species' boundaries in sympatric Sardinian Ophrys (Orchidaceae).

par Cortis, Pierluigi;Vereecken, Nicolas ;Schiestl, Florian F.P.;Barone Lumaga, M. R.;Scrugli, Anna;Cozzolino, Salvatore
Référence Annals of botany, 104, 3, page (497-506)
Publication Publié, 2009-08

Article révisé par les pairs

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Résumé :

In the sexually deceptive Ophrys genus, species isolation is generally considered ethological and occurs via different, specific pollinators, but there are cases in which Ophrys species can share a common pollinator and differ in pollen placement on the body of the insect. In that condition, species are expected to be reproductively isolated through a pre-mating mechanical barrier. Here, the relative contribution of pre- vs. post-mating barriers to gene flow among two Ophrys species that share a common pollinator and can occur in sympatry is studied.