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[Poster] Is there pollinator isolation between two parapatric ecotypes of Silene nutans?

Research output: Contribution to conferenceC3: Conference - meeting abstract

The moth-pollinated Silene nutans (Caryophyllaceae) consists of a cryptic species complex, including two strongly differentiated eastern (E1) and western (W1) genetic lineages. Several barriers to reproduction between them have been demonstrated, including strong hybrid inviability. In southern Belgium, the E1 and W1 lineages come into secondary contact and form a calcicolous and a silicicolous ecotype, respectively. Given possible mating costs (pollen loss and inviable progeny) involved in inter-ecotypic pollination, pollinator isolation might have evolved between ecotypes. To determine if pollinator isolation represents a barrier to reproduction between the two ecotypes of S. nutans, pollen dispersal between populations was studied using fluorescent powdered dyes as pollen analogues, and nocturnal moth pollinators were observed using infrared cameras. Overall, no evidence of pollinator isolation was found, since intra- and inter-ecotypic pollen flows were similar. Moreover, Hadena albimacula, a nursery pollinator specialized on S. nutans in Belgium, visited both ecotypes.
Original languageEnglish
Number of pages1
Publication statusPublished - May-2021
EventThe Silene vortex: a model system for the study of evolution: Virtual Worskhop - Meise Botanic Garden, Meise, Belgium
Duration: 17-May-202120-May-2021


WorkshopThe Silene vortex: a model system for the study of evolution
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