Abstract Detail

Systematics

Kriebel, Ricardo [1], Barrett, Marissa [1], Rose, Jeff [1], VanEe, Benjamin [2], Berry, Paul [3], Sytsma, Ken [4].

Floral shape evolution in Fuchsia (Onagraceae): combining phylogenetics, morphospace, and pollinator niches.

Fuchsia (Onagraceae), comprising 110 species, ranges from Mexico to the southern Andes with a disjunct distribution in New Zealand and Tahiti and displays remarkable variation in floral form, breeding systems, and pollinators. We combine morphometric data and a more comprehensive, time-calibrated phylogenetic framework to investigate floral evolution in Fuchsia. We include linear measurements of floral parts as well as outlines of the hypanthia to calculate shape variables for the floral tubes. We unite the morphometric and morphospace data and subject it to Principal Components Analysis in a phylogenetic framework to examine floral variation and its evolution across Fuchsia. We test the hypothesis that hummingbird-pollinated flowers and insect-pollinated flowers exhibit different morphologies due to selection by the morphologies of their pollinators. Furthermore, we test the hypothesis for Fuchsia that the hummingbird pollination syndrome is in fact more variable than a single category implies. Using novel approaches to detect shifts of continuous variables on phylogenies, we test for shifts in floral form using both PC scores as well as all raw variables. We find shifts within hummingbird-pollinated groups and demonstrate the presence of convergent floral evolution in different clades of hummingbird-pollinated species.

1 - University of Wisconsin, Madison, Botany, 430 Lincoln Drive, Madison, WI, 53706, USA
2 - University of Puerto Rico, Mayaguez
3 - University Of Michigan, Department Of Ecology And Evolutionary Biology, 3600 Varsity Drive, Ann Arbor, MI, 48108, USA
4 - University Of Wisconsin, Department Of Botany, Birge Hall, 430 Lincoln Drive, Madison, WI, 53706, USA

Keywords:
Andes
Fuchsia
hummingbirds
morphometrics
morphospace
New Zealand
onagraceae
pollination
species diversification
Tahiti.

Presentation Type: Oral Paper
Session: 12, Rosids II/Basal Asterids & Asterids I part A
Location: 102/Savannah International Trade and Convention Center
Date: Monday, August 1st, 2016
Time: 2:00 PM
Number: 12003
Abstract ID:571
Candidate for Awards:None