Tripp, Erin , Kiel, Carrie , McDade, Lucinda .
Diffuse Co-evolution between Hummingbirds and New World Plants? .
Several lineages of New World Acanthaceae are species rich (hundreds of taxa) and include many species with hummingbird-pollinated flowers. Similarly, hummingbirds are among the most species rich lineages of birds. If diffuse co-evolution accounts for this reciprocal species richness, then diversification of the plant and bird lineages should have been contemporaneous. We tested the diffuse co-evolution hypothesis by comparing calibrated hypotheses of phylogenetic relationships for two lineages of New World Acanthaceae (New World ‘justicioids’ and New World Ruellia) to that for hummingbirds. Our results indicate that the birds provided an already extant and important selective background against which the more recent diversification of the plants took place.
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1 - University of Colorado, Boulder, Museum of Natural History (COLO Herbarium), Department of Ecology and Evolutionary Biology, Boulder, Colorado, 80309, United States
2 - Rancho Santa Ana Botanic Garden, 1500 North College Ave., Claremont, CA, 91711, USA
3 - Rancho Santa Ana Botanic Garden, Department Of Botany, 1500 N. College Avenue, Claremont, CA, 91711, USA
Presentation Type: :Papers for Sections
Location: Marlborough A/Riverside Hilton
Date: Wednesday, July 31st, 2013
Time: 4:15 PM
Candidate for Awards:None