Geography is essential for reproductive isolation between florally diversified morning glory species from Amazon canga savannahs.

ABSTRACT: The variety, relative importance and eco-evolutionary stability of reproductive barriers are critical to understanding the processes of speciation and species persistence. Here we evaluated the strength of the biotic prezygotic and postzygotic isolation barriers between closely related morning glory species from Amazon canga savannahs. The flower geometry and flower visitor assemblage analyses supported pollination by the bees in lavender-flowered Ipomoea marabaensis and recruitment of hummingbirds as pollinators in red-flowered Ipomoea cavalcantei. Nevertheless, native bee species and alien honeybees foraged on flowers of both species. Real-time interspecific hybridization underscored functionality of the overlap in flower visitor assemblages, questioning the strength of prezygotic isolat

SUBMITTER: Babiychuk E 

PROVIDER: S-EPMC6889514 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature