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Abstract Details

Activity Number: 652
Type: Contributed
Date/Time: Thursday, August 2, 2012 : 10:30 AM to 12:20 PM
Sponsor: Section on Nonparametric Statistics
Abstract - #306300
Title: Nonparametric Species Delimitation Based on Branching Rates
Author(s): Edward Roualdes*+
Companies: University of Kentucky
Address: 311 Multidisciplinary Science Build, Lexington, KY, 40536-0082, United States
Keywords: coalescent ; species delimitation
Abstract:

Many probabilistic tests have been developed to delimit species based on the coalescent model. These computational efforts rely primarily on parametric models that try to account for known variance found in genetic processes. Unfortunately, this variance is difficult to model precisely. Using non-parametric tests, we develop a method to delineate species by estimating the time species change from growth (e.g., Yule models) to a coalescence process without constraining the processes to a particular model. Using simulated gene trees from a known species tree, we compare our non-parametric method to established parametric methods.


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