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- W4220722969 abstract "Abstract Possession of flowers that trap dipteran pollinators is a phylogenetically conserved trait within the genus Ceropegia , in which pollination systems can be generalized or highly specialized. However, little is known about the role of plant–pollinator interactions in maintaining reproductive isolation between plant species. This study examined the degree of specificity in plant-pollinator interactions and identified the mechanisms responsible for specificity among four synchronopatric species of Ceropegia . These species showed significant differences in floral scents, floral morphology, colour patterns, and presence of other functional structures, e.g., vibratile trichomes, whose essential role in fly attraction was experimentally demonstrated here. Similarity in chemical compositions of the floral scents to that of crushed Cletus trigonus bugs living in the same habitat suggests kleptomyiophily in at least some of the species studied. This is the first study to empirically demonstrate that mechanical isolation plays no discernable part in floral isolation in Ceropegia , but instead that a combination of olfactory and visual cues differentially influenced pollinator preferences and hindered heterospecific visitation, ensuring specificity through pollinator constancy, thereby driving ethological isolation among these congeneric sympatric species. We also showed experimentally that specificity was not maintained outside these plants’ native range, where other fly species occur." @default.
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- W4220722969 date "2022-03-10" @default.
- W4220722969 modified "2023-09-30" @default.
- W4220722969 title "Pollinator and Floral Odor Specificity Among Four Synchronopatric Species of Ceropegia (Apocynaceae) Suggests Ethological Isolation That Prevents Reproductive Interference" @default.
- W4220722969 doi "https://doi.org/10.21203/rs.3.rs-1424836/v1" @default.
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