Julie E. Danner, Raymond M. Danner, Frances Bonier, Paul R. Martin, Thomas W. Small, and Ignacio T. Moore, "Females, But Not Males, Respond More Strongly to the Local Song Dialect in a Tropical Sparrow: Implications for Population Divergence."
A Long-Distance Prediction for Pollinators
Is it possible to predict what kind of pollinator will visit a flower based on the flower's shape and chemistry? It is, according to a new study led by Scott Armbruster (University of Portsmouth (UK) and University of Alaska, Fairbanks). The study focused on Dalechampia, a genus of flowering vines that includes over 120 different species. After studying several Dalechampia species in South America and Africa, the researchers predicted that a previously unstudied Dalechampia species native to China would be pollinated by female resin-collecting bees around 12 to 20 millimeters in length. Armbruster and his team then conducted field observations in China to see if they were right. Sure enough, the Chinese species is pollinated by a female bee that fit the prediction. The study shows that pollination ecology can be predicted "from the pollination trends derived from studies conducted on the other side of the world," the researchers write. The finding validates the somewhat controversial idea that pollination ecology is sometimes predictable from the morphology of the flowers, Armbr
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