| Presentation Detail
Systematics and Inferred Phylogenies White, Noor [1], Faircloth, Brant C. [2], Braun, Edward [3], McCormack, John [4], Braun, Michael [5]. Unraveling the Evolutionary History of Nocturnality in the Nightbirds. A surprising finding of recent avian phylogenetics is the statistically unambiguous grouping of the diurnal order Apodiformes (swifts and hummingbirds) within the nocturnal order Caprimulgiformes (i.e. nighthawks and nightjars; hereafter called "Caprimulgiformes"). The pairing of the two orders in monophyly raises fascinating questions about the evolution of nocturnality in birds, especially how many times it occurred, what adaptations made it possible, and what genetic and molecular variation underlies those adaptations. Although the previously mentioned phylogenies reconstructed this clade with a single transition to nocturnality, several basal nodes are poorly supported and other plausible topologies support different routes of nocturnal adaptation. Given a single transition to nocturnality, we would expect to find ancestral adaptations common to all lineages. However, some "Caprimulgiformes" lineages display unique adaptations to nocturnality, which leads me to hypothesize that there were multiple origins. I have used a novel massively parallel sequencing approach to resolve the "Caprimulgiformes" phylogeny using a dataset based on the informative flanking regions of ~5,000ultra-conserved element loci to answer the following question: Did nocturnality evolve once at the base of the clade, being lost in Apodiformes, or were there two or more transitions to nocturnality within the clade? Author Contributions:Noor White, Brant Faircloth: contributed tolaboratory and computational portions of this work Brant Faircloth, Ed Braun, John McCormack, Mike Braun: contributed to development of usage of UCEs for phylogenetics and taxon sampling
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1 - University of Maryland, Biology, Biosciences Research Building, College Park, MD, 20742, USA
2 - University of California Los Angeles, Ecology and Evolutionary Biology, 621 Charles E. Young Drive South, Los Angeles, CA, 90095, USA
3 - University of Florida, Biology, PO Box 118525, Gainesville, FL, 32611-8525, USA
4 - Occidental College, Biology Department, 1600 Campus Rd, Los Angeles, CA, 90041, USA
5 - Smithsonian Institution, National Museum of Natural History; Vertebrate Zoology, PO Box 37012, NHB MRC 163, Washington, DC, 20013-7012, USA
Keywords:
phylogenetics
Nocturnality
Caprimulgiformes.
Presentation Type: Regular Oral Presentation
Session: 128
Location: Rendezvous B/Snowbird Center
Date: Tuesday, June 25th, 2013
Time: 8:45 AM
Number: 128002
Abstract ID:912
Candidate for Awards:Ernst Mayr Award |
